RPS TL

RPS TL
PHOTOVOLTAIC SOLUTIONS
Operating Instructions
Photovoltaic Inverter
280 kWp ... 1460 kWp
RPS TL
Table of contents
This document............................................................................................................................. 9 Warranty and liability ................................................................................................................. 9 Obligation ................................................................................................................................... 9 Copyright .................................................................................................................................... 9 Storage........................................................................................................................................ 9 1 General safety instructions and information on use ............................................................ 10 1.1 Terminology .................................................................................................................... 10 1.2 Designated use ................................................................................................................ 10 1.3 Misuse ............................................................................................................................. 11 1.3.1 Explosion protection ........................................................................................................ 11 1.4 Residual risks .................................................................................................................. 11 1.5 Safety and warning signs at solar inverter ..................................................................... 11 1.6 Warning information and symbols used in the user manual .......................................... 12 1.6.1 Hazard classes ................................................................................................................ 12 1.6.2 Hazard symbols ............................................................................................................... 12 1.6.3 Prohibition signs .............................................................................................................. 12 1.6.4 Personal safety equipment ............................................................................................... 13 1.6.5 Recycling ........................................................................................................................ 13 1.6.6 Grounding symbol ........................................................................................................... 13 1.6.7 ESD symbol .................................................................................................................... 13 1.6.8 Information signs ............................................................................................................ 13 1.7 Marking of text passages ................................................................................................ 13 1.8 Conformity....................................................................................................................... 13 1.9 Directives and guidelines to be adhered to by the operator ........................................... 14 1.10 Operator's general plant documentation ..................................................................... 14 1.11 Operator's/operating staff's responsibilities ............................................................... 14 1.11.1 Selection and qualification of staff..................................................................................... 14 1.11.2 General work safety......................................................................................................... 14 1.12 Organizational measures ............................................................................................. 15 1.12.1 General .......................................................................................................................... 15 1.13 Handling and installation ............................................................................................. 15 1.14 Electrical connections .................................................................................................. 15 1.14.1 The five safety rules ........................................................................................................ 15 2 1.15 Safe operation .............................................................................................................. 16 1.16 Maintenance and service/troubleshooting .................................................................. 16 1.17 Utilities and operating materials ................................................................................. 16 Transport .............................................................................................................................. 17 2.1 Special safety instructions .............................................................................................. 17 2.2 Dimensions/weight ......................................................................................................... 17 2.3 Marking of center of gravity ............................................................................................ 17 2.4 Crane transport ............................................................................................................... 18 2.4.1 Transport by means of crane fork ..................................................................................... 18 2.4.2 Transport by means of load frame .................................................................................... 18 08/2010
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2.4.3 2.5 3 4 Transport without load frame ........................................................................................... 19 Storage ............................................................................................................................ 20 Scope of supply ..................................................................................................................... 21 3.1 Communication ............................................................................................................... 21 3.2 Arrangement of electrical cabinet modules and transport units .................................... 21 Technical data ....................................................................................................................... 24 4.1 Multiple String application .............................................................................................. 24 4.1.1 Multiple String connected to 270 V mains .......................................................................... 24 4.1.2 Multiple String connected to 300 V mains .......................................................................... 25 4.1.3 Multiple String connected to 330 V mains .......................................................................... 26 4.2 Master-Slave application ................................................................................................. 27 4.2.1 Master-Slave connected to 270 V mains ............................................................................ 27 4.2.2 Master-Slave connected to 300 V mains ............................................................................ 28 4.2.3 Master-Slave connected to 330 V mains ............................................................................ 29 4.3 5 Device identification ....................................................................................................... 30 Product overview / Description of function ......................................................................... 31 5.1 Multiple String application .............................................................................................. 31 5.2 Master-Slave application ................................................................................................. 32 5.3 Product variants .............................................................................................................. 33 5.3.1 AC distributor .................................................................................................................. 34 5.3.2 Inverter module .............................................................................................................. 37 5.3.3 DC distributor ................................................................................................................. 39 5.3.4 Rating plate .................................................................................................................... 41 5.4 Function........................................................................................................................... 43 5.5 Monitoring and protective functions ............................................................................... 48 5.5.1 Grid monitoring ............................................................................................................... 48 5.5.2 Insulation monitoring....................................................................................................... 48 5.5.3 EFC (Earth Fault Control) ................................................................................................. 48 5.5.4 Temperature monitoring .................................................................................................. 50 5.5.5 Surge arrester ................................................................................................................. 50 6 7 Installation ........................................................................................................................... 51 6.1 Place of installation/environmental conditions .............................................................. 51 6.2 Cooling ............................................................................................................................ 52 6.3 Distance to ceiling ........................................................................................................... 53 6.4 Mechanical connection of joined modules ...................................................................... 54 Electrical connections ........................................................................................................... 55 7.1 Special safety instructions .............................................................................................. 55 7.2 Internal wiring ................................................................................................................ 56 7.2.1 Control voltage connection ............................................................................................... 57 7.2.2 Connection of overvoltage protection ................................................................................ 58 7.2.3 Connection of insulation monitoring .................................................................................. 59 7.2.4 Connection of system bus ................................................................................................ 60 7.2.5 RS485 connection............................................................................................................ 62 7.2.6 Connection of AC busbars ................................................................................................ 65 7.2.7 Connection of Multiple String DC distributor ....................................................................... 67 7.2.8 Connection of Master-Slave DC distributor ......................................................................... 68 7.2.9 Connection of current transformer .................................................................................... 69 7.3 4
Mains connection ............................................................................................................ 70 RPS TL
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7.3.1 7.3.2 7.4 Connection to main switch ............................................................................................... 70 Connection to busbars ..................................................................................................... 72 Control voltage connection ............................................................................................. 75 7.5 Generator connection ...................................................................................................... 77 7.5.1 Variant with 4 fuse-protected inputs.................................................................................. 77 7.5.2 Variant with DC switch and fuse-protected DC input ........................................................... 78 7.5.3 Variant with DC switch and terminal blocks ........................................................................ 80 7.6 8 Connection to DC distributor........................................................................................... 80 Operation .............................................................................................................................. 82 8.1 Special safety instructions .............................................................................................. 82 8.2 Control elements ............................................................................................................. 83 8.2.1 Inverter module .............................................................................................................. 83 8.2.2 AC distributor .................................................................................................................. 84 8.3 Control unit KP500 .......................................................................................................... 85 8.3.1 Menu structure................................................................................................................ 86 8.4 First commissioning ........................................................................................................ 87 8.5 Commissioning ................................................................................................................ 87 8.5.1 Start .............................................................................................................................. 87 8.6 Measuring the DC and AC voltage ................................................................................... 89 8.7 Decommissioning ............................................................................................................ 90 8.7.1 Stopping ......................................................................................................................... 90 9 8.8 Emergency shutdown ...................................................................................................... 90 8.9 Final decommissioning/disassembly/disposal/recycling ............................................... 91 Parameterization .................................................................................................................. 92 9.1 Selecting the language.................................................................................................... 92 9.2 Set password ................................................................................................................... 92 9.3 Display parameters ......................................................................................................... 93 9.3.1 Inverter data .................................................................................................................. 93 9.3.2 Installed optional modules ............................................................................................... 93 9.3.3 Software version ............................................................................................................. 93 9.4 Operating behavior ......................................................................................................... 93 9.4.1 Multiple String ................................................................................................................. 93 9.4.2 Master-Slave ................................................................................................................... 94 9.5 Operating statuses .......................................................................................................... 97 9.6 Voltage controller ............................................................................................................ 98 9.7 Power limitation .............................................................................................................. 99 9.8 Communication interface for system monitoring ........................................................... 99 9.8.1 Setting the Baud Rate ...................................................................................................... 99 9.8.2 Set up node addresses..................................................................................................... 99 9.8.3 Protocol ........................................................................................................................ 100 9.9 Feed-in management .................................................................................................... 100 9.9.1 Power limitation by setpoint ........................................................................................... 100 9.9.2 Power limitation in case of overfrequency ........................................................................ 101 9.10 Mains frequency monitoring ...................................................................................... 102 9.11 System synchronization ............................................................................................. 102 9.11.1 Node address ................................................................................................................ 103 9.11.2 Baud rate ..................................................................................................................... 103 08/2010
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9.11.3 9.11.4 9.11.5 9.11.6 9.11.7 Identifier ...................................................................................................................... 103 Synchronization time ..................................................................................................... 104 Timeout monitoring ....................................................................................................... 104 Synchronization operation mode ..................................................................................... 104 Master-Slave operation mode ......................................................................................... 105 9.12 Master-Slave configuration ........................................................................................ 105 9.12.1 Function ....................................................................................................................... 105 9.12.2 Preconditions for Master-Slave........................................................................................ 106 9.12.3 Master-Slave operation mode ......................................................................................... 106 9.12.4 Actual current value....................................................................................................... 106 9.12.5 Release of slave inverter modules ................................................................................... 106 9.12.6 Process data settings ..................................................................................................... 107 9.12.7 Control ......................................................................................................................... 108 9.12.8 Behavior of system in faults ........................................................................................... 109 9.13 Electrical cabinet fan.................................................................................................. 109 9.14 Error/warning behavior ............................................................................................. 110 9.14.1 Automatic acknowledgement of errors/faults ................................................................... 110 9.14.2 Operation mode overvoltage protection ........................................................................... 110 9.14.3 Operation mode Insulation monitoring ............................................................................ 110 9.15 Intelligent current limits ............................................................................................ 111 9.16 Status ......................................................................................................................... 112 9.17 Actual values of solar inverter ................................................................................... 112 9.18 Actual values of frequency inverter ........................................................................... 113 9.19 Mains actual values .................................................................................................... 113 9.20 Actual value memory ................................................................................................. 114 9.21 Parameters ................................................................................................................. 115 10 Maintenance and service .................................................................................................... 118 10.1 Special safety instructions ......................................................................................... 118 10.2 Service intervals/preventive maintenance ................................................................ 119 10.3 Test/inspections ........................................................................................................ 120 11 Error diagnosis .................................................................................................................... 121 11.1 List of errors ............................................................................................................... 121 11.2 Error messages........................................................................................................... 121 11.3 Warning Messages ..................................................................................................... 123 12 Plant monitoring ................................................................................................................. 124 12.1 Plant monitoring by means of data logger ................................................................ 124 Index ......................................................................................................................................... 125 6
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List of illustrations
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2-1: Marking of center of gravity ................................................................................................ 17 22: Transport by means of crane fork ......................................................................................... 18 2-3: Transport by means of load frame ....................................................................................... 19 2-4: Crane transport ................................................................................................................. 19 3-1: Transport units door hinge right .......................................................................................... 22 3-2: Transport units door hinge left ............................................................................................ 23 4-1: Code description ................................................................................................................ 30 5-1: Product overview - Multiple String application ....................................................................... 32 5-2: Product overview - Master-Slave application ......................................................................... 33 5-3: Connection of solar inverter to IT grid.................................................................................. 33 5-4: AC distributor, outside view ................................................................................................ 34 5-5: AC distributor, inside view, connection to main switch, systems ≤ RPS 620 TL ........................ 35 5-6: AC distributor, inside view, connection with busbars, systems ≥ RPS 680 TL ........................... 36 5-7: Inverter module, outside view ............................................................................................. 37 5-8: Inverter module, inside view ............................................................................................... 38 5-9: DC distributor, outside view ................................................................................................ 39 5-10: DC distributor, inside view................................................................................................. 40 5-11: Inverter module rating plate.............................................................................................. 41 5-12: Solar inverter rating plate ................................................................................................. 42 5-13: Inverter module block diagram .......................................................................................... 44 5-14: AC distributor block diagram ............................................................................................. 45 5-15: Multiple String DC distributor block diagram ....................................................................... 46 5-16: Master-Slave DC distributor block diagram .......................................................................... 47 5-17: Earth fault control with grounding at negative pole of PV generator ...................................... 49 6-1: Air flow ............................................................................................................................. 52 6-2: Distance to ceiling .............................................................................................................. 53 6-3: Joining by means of connector and bracket .......................................................................... 54 7-1: Control voltage connection.................................................................................................. 57 7-2: Connection of overvoltage protection ................................................................................... 58 7-3: Connection of insulation monitoring ..................................................................................... 59 7-4: Connection of system bus ................................................................................................... 60 7-5: System bus termination example ......................................................................................... 61 7-6: Connection of shield ........................................................................................................... 61 7-7: RS485 connection .............................................................................................................. 62 7-8: RS485 module ................................................................................................................... 63 7-9: Communication wiring example ........................................................................................... 64 7-10: Connection of shield ......................................................................................................... 65 7-11: Connection of AC busbars ................................................................................................. 66 7-12: Assembly of AC busbars .................................................................................................... 66 7-13: Connection of Multiple String DC distributor ........................................................................ 67 7-14: Connection of Master-Slave DC distributor .......................................................................... 68 7-15: Connection of transformer ................................................................................................ 69 7-16: Disassembly of bottom plate ............................................................................................. 70 7-17: Disassembly of base sheet ................................................................................................ 70 7-18: Connection of cables ........................................................................................................ 71 7-19: Connection to main switch ................................................................................................ 72 7-20: Disassembly of bottom plate ............................................................................................. 72 7-21: Disassembly of base sheet ................................................................................................ 73 7-22: Connection of cables ........................................................................................................ 73 7-23: AC connection .................................................................................................................. 74 7-24: AC distributor, connection of control voltage ....................................................................... 76 7-25: DC connection 4 string groups ........................................................................................... 77 7-26: Connection with DC switch and fuses ................................................................................. 78 7-27: DC connection cable lug sizes/distances ............................................................................. 79 7-28: DC connection with two cables per pole ............................................................................. 79 7-29: Connection with DC switch and terminal blocks ................................................................... 80 7-30: Connection of DC distributor ............................................................................................. 81 08/2010
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8-1: Control elements ................................................................................................................ 83 8-2: AC distributor control elements ........................................................................................... 84 8-3: Control unit ....................................................................................................................... 85 8-4: Menu Structure .................................................................................................................. 86 8-5: DC and AC measurement terminals...................................................................................... 89 9-1: Operating behavior Master-Slave ......................................................................................... 96 9-2: I=f(U), insolation const. ..................................................................................................... 98 9-3: I=f(U), cell temp. const. ..................................................................................................... 98 9-4: I=f(U), P=f(U) ................................................................................................................... 98 12-1: Plant monitoring with data logger RPSlog1000 .................................................................. 124 RPS TL
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This document
Dear customer,
This user manual describes the solar inverter type RPS TL by BONFIGLIOLI VECTRON GmbH (in the following referred to as solar inverter) in the applications Master-Slave and Multiple String as well as how to use it
in the intended field of application.
The user manual contains important information on how the solar inverter can be used safely, properly and
efficiently. Compliance with this user manual contributes to avoiding risks, minimizing repair cost and downtimes and increasing the reliability and service life of the solar inverter. For this reason, make sure you read
the user manual carefully.
In case any problems occur which are not covered by this user manual sufficiently, please
contact the manufacturer.
Warranty and liability
BONFIGLIOLI VECTRON GmbH would like to point out that the contents of this user manual do not form part
of any previous or existing agreement, assurance or legal relationship. Neither are they intended to supplement or replace such agreements, assurances or legal relationships. Any obligations of the manufacturer
shall solely be based on the relevant purchase agreement which also includes the complete and solely valid
warranty stipulations. These contractual warranty provisions are neither extended nor limited by the specifications contained in this documentation.
The manufacturer reserves the right to correct or amend the specifications, product information and omissions in these operating instructions without notice. The manufacturer shall not be liable for any damage,
injuries or costs which may be caused by the aforementioned reasons.
In addition to that, BONFIGLIOLI VECTRON GmbH excludes any warranty/liability claims for any personal
and/or material damage if such damage is due to one or more of the following causes:
-
inappropriate use of the solar inverter,
-
non-compliance with the instructions, warnings and prohibitions contained in this user manual,
-
unauthorized modifications of the solar inverter,
-
insufficient monitoring of parts which are subject to wear,
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maintenance work not carried out properly or not carried out in due time,
-
catastrophes by external impact and Force Majeure.
Obligation
This user manual must be read before commissioning. Anybody entrusted with tasks in connection with the
-
transport and/or unloading,
-
assembly,
-
installation of the solar inverter and
-
operation of the solar inverter
must have read and understood the user manual and, in particular, the safety instructions in order to protect
himself/herself and prevent the solar inverter from being damaged.
Copyright
This user manual is protected by copyright. It is solely intended for use by operating staff and must not be
copied nor disclosed to third parties.
Storage
This user manual is an integral component of the solar inverter. It must be stored such that it is accessible
to operating staff at all times. In case the solar inverter is sold to other users, this user manual must also be
handed over.
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1
General safety instructions and information on use
The chapter "General safety instructions and information on use" contains general safety instructions for the
Operator and the Operating Staff. At the beginning of certain main chapters, some safety instructions are
included which apply to all work described in the relevant chapter. Special work-specific safety instructions
are provided before each safety-relevant work step.
1.1
Terminology
Operator
This is the entrepreneur/company who/which operates the solar inverter and uses it as per the specifications
or has it operated by qualified and instructed staff.
Operating Staff
The term Operating Staff covers persons instructed by the Operator of the solar inverter and assigned the
task of operating it.
Qualified staff
The term Qualified Staff covers staff who is assigned special tasks by the Operator of the solar inverter , e.g.
transport, installation, maintenance and service/repair and troubleshooting. Based on their qualification
and/or know-how, qualified staff must be capable of identifying defects and assessing functions.
Qualified electrician
The term Qualified Electrician covers qualified and trained staff who has special technical know-how and
experience with electrical installations. In addition, Qualified Electricians must be familiar with the applicable
standards and regulations, they must be able to assess the assigned tasks properly and identify and eliminate potential hazards.
Instructed person
The term Instructed Person" covers staff who was instructed and trained about/in the assigned tasks and
the potential hazards that might result from inappropriate behavior. In addition, instructed persons must
have been instructed in the required protection provisions, protective measures, the applicable directives,
accident prevention regulations as well as the operating conditions and verified their qualification.
Expert
The term Expert covers qualified and trained staff who has special technical know-how and experience relating to solar inverter. Experts must be familiar with the applicable government work safety directives, accident prevention regulations, guidelines and generally accepted rules of technology in order to assess the
operationally safe condition of the solar inverter.
1.2
Designated use
The solar inverter is designed according to the state of the art and recognized safety regulations.
Applied standards:
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2006/95 EC Low voltage directive
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DIN EN 50178 Electronic equipment for use in power installations
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2004/108/EC Electromagnetic compatibility
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EN 61000-6-2 Electromagnetic compatibility, Immunity for industrial environments
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EN 61000-6-4 Electromagnetic compatibility, Emission for industrial environments
However, use of the device still holds risk for life and limb of operating staff or other persons as well as the
risk of damaging the solar inverter and/or other tangible assets. Only use the solar inverter if it is in a technically perfect condition and in compliance with its designated use, aware of the risks involved, taking the
required safety measures and in compliance with this user manual.
The solar inverter may only be used in photovoltaic applications for converting the electrical power generated by photovoltaic generators and feeding it into the supply grid. Any other use, connection of other generator types, shall be considered as not in compliance with the designated use. The manufacturer shall not be
held liable for any damage resulting from such non-compliance. The sole risk shall be borne by the operator.
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For the performance limits of the solar inverters of applications Master-Slave and Multiple String, refer to
chapter 4 "Technical Data".
1.3
Misuse
Any use other than that described in "Designated use" shall not be permissible and shall be considered as
misuse.
The following is not permitted:
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use by uninstructed staff,
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use of the device while it is not in perfect condition,
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without protection enclosure (e.g. doors, covers),
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without safety equipment or with safety equipment deactivated.
The manufacturer shall not be held liable for any damage resulting from such misuse. The sole risk shall be
borne by the operator.
1.3.1
Explosion protection
The solar inverter is an IP 20 protection class device. For this reason, use of the device in explosive atmospheres is not permitted.
1.4
Residual risks
Residual risks are special hazards involved in handling of the solar inverter which cannot be eliminated despite the safety-compliant design of the device. Residual risks are not obviously identifiable and can be a
potential source of injury or health hazard.
Electrical hazard
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Danger of contact with energized components due to a defect, opened covers or enclosures or
improper working on electrical equipment.
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Danger of contact with energized components in solar inverter if no external disconnecting device was
installed by the customer.
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Danger of contact with still energized DC link capacitors.
Electrostatic charging
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Danger of electrostatic charging in case of equipotential bonding defect.
Thermal hazards
-
Risk of accidents due to hot surfaces such as heat sink, transformer, fuse, sine filter.
Danger of tilting during transport
-
Center of gravity is not the middle of the electric cabinet modules.
1.5
Safety and warning signs at solar inverter
•
Comply with all safety instructions and danger information provided on the solar inverter.
•
Ensure that all safety instructions and danger information provided on the solar inverter are/is complete
and legible.
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1.6
Warning information and symbols used in the user manual
1.6.1
Hazard classes
The following hazard identifications and symbols are used to mark particularly important information:
DANGER
Identification of immediate threat holding a high risk of death or serious injury if not avoided.
WARNING
Identification of immediate threat holding a medium risk of death or serious injury if not
avoided.
CAUTION
Identification of immediate threat holding a low risk of minor or moderate physical injury if
not avoided.
NOTE
Identification of a threat holding a risk of material damage if not avoided.
1.6.2
Symbol
1.6.3
Symbol
12
Hazard symbols
Meaning
Symbol
Meaning
General hazard
Suspended load
Electrical voltage
Hand injury
Danger of crushing
Hot surfaces
Prohibition signs
Meaning
Symbol
Meaning
No persons with pacemakers
Fire, open flames forbidden
No switching; it is forbidden to switch
the machine, assembly on
No smoking
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1.6.4
Personal safety equipment
Symbol
Meaning
Wear body protection.
1.6.5
Recycling
Symbol
Meaning
Recycling, to avoid waste, collect all
materials for reuse.
1.6.6
Grounding symbol
Symbol
Meaning
Ground connection
1.6.7
ESD symbol
Symbol
Meaning
ESD: Electrostatic Discharge (can
damage components and assemblies)
1.6.8
Information signs
Symbol
Meaning
Tips and information making using the
solar inverter RPS 450 easier.
1.7
Marking of text passages
Special passages in the user manual are marked by the following symbols:
-
Marking of lists.
•
Marking of instructions and information in safety instructions.
1.8
Conformity
The declaration of conformity will be supplied by the manufacturer upon request.
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1.9
Directives and guidelines to be adhered to by the operator
The operator must follow the following directives and regulations:
•
Ensure that the applicable workplace-related accident prevention regulations as well as other applicable
national regulation are accessible to the staff.
•
An authorized person must ensure, before using the solar inverter, that the device is used in compliance
with its designated use and that all safety requirements are met.
•
Additionally, comply with the applicable laws, regulations and directives of the country in which the solar
inverter is used.
1.10
•
Operator's general plant documentation
In addition to the user manual, the operator should issue separate internal operating instructions for the
solar inverter. The user manual of the solar inverter must be included in the user manual of the whole
plant.
1.11
1.11.1
Operator's/operating staff's responsibilities
Selection and qualification of staff
•
Any work on the solar inverter may only be carried out by reliable staff. The staff must not be under the
influence of any drugs. Note the minimum age required by law. Only employ qualified or instructed staff.
Define the staff's responsibility in connection with all work on the solar inverter clearly.
•
Work on the electrical components may only be performed by a qualified electrician according to the
applicable rules of electrical engineering.
1.11.2
General work safety
•
In addition to the user manual, any applicable legal or other regulations relating to accident prevention
and environmental protection must be complied with. The staff must be instructed accordingly. Such
regulations and/or requirements may include, for example, handling of hazardous media and materials
or provision/use of personal protective equipment.
•
In addition to this user manual, issue any additional directives that may be required to meet specific
operating requirements, including supervision and reporting requirements, e.g. directives relating to
work organization, workflow and employed staff.
•
Do not change or modify the solar inverter in any way that might affect safety, unless such change or
modification has been approved expressly by the manufacturer.
•
Only use the solar inverter if the rated connection and setup values specified by the manufacturer are
met. Only use original spare parts.
•
Provide appropriate tools as may be required for performing all work on the solar inverter properly.
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1.12
Organizational measures
1.12.1
General
•
Train your staff in the handling and use of the solar inverter as well as the risks involved.
•
Use of any individual parts or components of the solar inverter in other parts of the operator's plant is
prohibited.
1.13
Handling and installation
•
Do not commission any damaged or destroyed components.
•
Prevent any mechanical overloading of the solar inverter. Do not bend any components and never
change the isolation distances.
•
Do not touch any electronic construction elements and contacts. The solar inverter is equipped with
components which are sensitive to electrostatic energy and can be damaged if handled improperly. Any
use of damaged or destroyed components shall be considered as a non-compliance with the applicable
standards.
•
The solar inverter may only be installed in suitable operating rooms. The solar inverter is exclusively
designed for installation in industrial environments.
1.14
Electrical connections
•
The five safety rules must be complied with.
•
Never touch terminals which are energized in operation because the capacitors may still be charged
even if the device is switched off. It will take more than 1 minute until the DC link capacitors have discharged.
•
When performing any work on/with the solar inverter, always comply with the applicable national and
international regulations/laws on work on electrical equipment/plants.
•
The cables connected to the solar inverter may not be subjected to high-voltage insulation tests unless
appropriate circuitry measures are taken before.
•
Connect the solar inverter only to supply grids suitable for this type of application.
1.14.1
The five safety rules
When working on/in electrical plants, always follow the five safety rules.
1. Isolate,
2. secure to prevent restarting,
3. check isolation,
4. earth and short-circuit,
5. cover or shield neighboring live parts.
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1.15
Safe operation
•
During operation of the solar inverter, always comply with the applicable national and international regulations/laws on work on electrical equipment/plants.
•
Before commissioning and the start of the operation, make sure to fix all covers and check the terminals.
Check the additional monitoring and protective devices according to the applicable national and international safety directives.
•
Never open the solar inverter during operation, nor perform any connection work.
•
Solar inverters hold high voltage levels during operation, are equipped with rotating parts (fan) and have
hot surfaces. Any unauthorized removal of covers, improper use, wrong installation or operation may result in serious injuries or material damage.
•
Even some time after shutdown of the solar inverter, certain components, e.g. heat sink, transformer,
fuse, filter may have a high temperature. Don't touch any surfaces directly after shutdown. Wear safety
gloves where necessary.
•
In order to avoid accidents or damage, only qualified staff and electricians may carry out the work such
as installation, commissioning or setup.
•
In the case of a defect of terminals and/or cables, etc., immediately disconnect the solar inverter from
mains supply and the PV generator.
•
Persons not familiar with the operation of solar inverter as well as children must not have access to the
solar inverter. Do not bypass nor decommission any protective facilities.
1.16
Maintenance and service/troubleshooting
•
Perform the maintenance work and inspections prescribed by the user manual carefully, including the
specifications on parts/equipment replacement.
•
Work on the electrical components may only be performed by a qualified electrician according to the
applicable rules of electrical engineering. Only use original spare parts.
•
Unauthorized opening and improper interventions can lead to personal injury or material damage. Repairs on the solar inverter may only be carried out by the manufacturer or persons authorized by the
manufacturer. Check protective equipment regularly.
•
Before performing any maintenance work, the solar inverter must be disconnected from mains supply,
PV voltage and its own power supply and secured against restarting. The five safety rules must be complied with.
1.17
Utilities and operating materials
Comply with all applicable environmental protection regulations. Ensure that all utilities and operating materials are disposed of properly.
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2.1
Transport
Special safety instructions
WARNING
High weight and unusual center of gravity!
Tilting the solar inverter may result in death or serious injuries. Due to the size and weight of
the solar inverter, there is the risk of accidents during transport. Center of gravity is not the
middle of the solar inverter.
2.2
•
Take utmost care during transport in order to prevent damage and deformation. Transport, attachment and lifting of loads may only be carried out by specially instructed staff
who are familiar with the work.
•
Only use suitable transport and lifting equipment with sufficient carrying capacity. The
lifting cables/chains used must be able to carry the weight of the solar inverter. Check
the ropes or chains for damage.
•
Wear appropriate safety clothing.
•
When lifting the solar inverter up ensure that it does not fall over, is displaced, swings
out or falls down.
•
Before the solar inverter is lifted up, everybody must have left the work area.
•
Before transport, make sure the transport path has sufficient carrying capacity.
•
Tilting the solar inverter is prohibited. Transport may only be effected in upright position.
•
Do not step under suspended loads.
Dimensions/weight
For information on the weight and dimensions of the solar inverter, refer to chapter "Technical
data".
2.3
Marking of center of gravity
The center of gravity is marked on the packaging of the solar inverter.
Figure 2-1: Marking of center of gravity
08/2010
RPS TL
17
2.4
2.4.1
Crane transport
Transport by means of crane fork
Figure 22: Transport by means of crane fork
Possible transport variants (see chapter 3.2 "Arrangement of electrical cabinet modules and transport
units"):
-
1 x 1 unit
-
1 x 2 units connected to one another
-
1 x 3 units connected to one another.
•
Unscrew the base sheets on the front and rear side.
•
Move the crane fork below the plant.
•
Lift the plant up carefully. Avoid putting it down abruptly.
After installation, screw on the base sheets again.
WARNING
High weight and unusual center of gravity!
Center of gravity is not the middle of the solar inverter.
2.4.2
•
The center of gravity of the AC distributor is in the upper area of the electrical cabinet.
•
The center of gravity of the inverter modules is in the bottom rear area of the electrical
cabinet.
Transport by means of load frame
NOTE
Damaging of solar inverter
•
Always use a load frame for transport. The tensile loads must act vertically on the solar
inverter. If the tensile forces don't act vertically on the eye bolts, this will result in mechanical damage and distortion.
•
18
In the storage compartment on the inside of the solar inverter, you will find the eye
bolts.
RPS TL
08/2010
Figure 2-3: Transport by means of load frame
•
Lift the solar inverter up carefully. Avoid putting it down abruptly.
2.4.3
Transport without load frame
Figure 2-4: Crane transport
Possible transport variants (see chapter 3.2 "Arrangement of electrical cabinet modules and transport
units"):
-
1 x 1 unit
-
1 x 2 units connected to one another
-
1 x 3 units connected to one another.
•
Remove the screws from the upper side of the solar inverter.
•
Screw in the supplied eyes.
•
Lift the solar inverter up carefully. Avoid putting it down abruptly.
•
For weight specifications, refer to chapter 4 "Technical data".
08/2010
RPS TL
19
2.5
Storage
NOTE
Damaging of solar inverter
•
Wrong or inappropriate storage may result in damage, e.g. due to moisture and dirt.
Avoid major temperature variations and high air humidity.
•
During storage, protect the solar inverter against moisture and dirt.
Ensure that all packaging materials are disposed of in an environmentally compatible manner.
20
RPS TL
08/2010
3
Scope of supply
Immediately after delivery, check that the contents are undamaged (transport damage) and corresponds to
the scope of the order.
Check if the specifications on the shipping not match the specification on the rating plate. Also check the
type and completeness of any supplied accessories. Report any transport damage and missing articles to the
forwarding agent immediately.
The following components are included in the scope of supply:
In the storage compartment on the inside of the solar inverter, you will find:
-
Electrical cabinet key
-
Circuit diagrams
-
Eye bolts for transport
-
Foamed material seal for cable entry
-
Control unit KP500
-
Electrical cabinet connectors
3.1
Communication
The standard variant features the communication modules CM-485 and CM-CAN for plant monitoring and
configuration via PC/notebook. This module can be replaced by an optional communication module for
RS232, Profibus DP or CANopen.
3.2
Arrangement of electrical cabinet modules and transport units
A RPS TL inverter system is composed of an AC distributor and at least two inverter modules.
An additional DC distributor is required for the Master-Slave application.
For the Master-Slave application an additional DC distribution is necessary.
For Multiple String application, up to two DC distributors can be used, depending on the number of inverter
modules.
As a standard, the transport units will be pre-configured in the factory before shipping. The arrangement of
the solar inverter system modules depends on the number of electrical cabinet modules and the door hinge.
In the case of deviating customer requirements, the relevant package size must be specified in the order.
The transport units are pre-wired. In the case of two and more transport units, the units must be wired internally (see chapter 7.2 "Internal wiring").
For more information on the solar inverter types, refer to chapter 4 "Technical data".
08/2010
RPS TL
21
The following transport units are defined:
Standard door hinge right
without DC distributor
Standard door hinge right
with DC distributor
Figure 3-1: Transport units door hinge right
22
RPS TL
08/2010
Standard door hinge left
without DC distributor
Standard door hinge left
with DC distributor
Figure 3-2: Transport units door hinge left
08/2010
Connected transport units
RPS TL
23
4
Technical data
The RPS TL inverter system is designed for connection to three voltage levels. Minimum MPP voltage depends on the mains voltage.
4.1
4.1.1
Multiple String application
Multiple String connected to 270 V mains
Type
DC side input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
Number of MPP trackers
Number of optional
DC distributors
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)**
RPS 280 TL RPS 340 TL RPS 510 TL RPS 680 TL RPS 850TL
kip
280
340
510
680
850
A
V
V
-
600
700
1400
1750
2
2
1050
900*
425 … 875
3
4
5
1
V
Hz
kW
A
%
%
%
W
mm
Weight approx.***
kg
Degree of protection
Environment
Ambient temperature
°C
Rel. air humidity
%
Rate of coolant air required m3/h
Protection and monitoring
Insulation monitor
-
2
270 (IT mains)
50 / 60
300
450
600
640
960
1280
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
250
540
98,3
98,0
<60
<40
1800 x
2100 x 800
1150
1800 x
2100 x 800
1300
3000
2400 x
2100 x 800
1850
IP 20
750
1600
<80
<100
3200 x
2100 x 800
2450
3800 x
2100 x 800
3000
-10 … +40
15...85 not condensing
4500
6000
7500
Tripping value 30 kΩ,
Adjustable response value,
max. leakage capacitance
max. leakage capacitance 999.9 µF
30 µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
Grid monitoring
Overvoltage protection
Communication
Communication interface
RS485
*
1000 V upon request
** Design width increases by 600 mm per additional DC distributor.
*** Weight increases by 250 kg per additional DC distributor.
24
RPS TL
08/2010
4.1.2
Multiple String connected to 300 V mains
Type
Input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
Number of MPP trackers
Number of optional
DC distributors
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)**
Weight approx.
Degree of protection
Environment
Ambient temperature
Rel. air humidity
Rate of coolant air required
Protection and monitoring
Insulation monitor
RPS
RPS
310 TL 380 TL
RPS
470 TL
kip
315
378
470
A
V
V
-
600
700
900
2
2
3
RPS
570 TL
567
RPS
760 TL
RPS
940TL
756
944
1133
1050
1400
900*
460 … 875
3
4
1750
2100
5
6
1
V
Hz
kW
A
%
280
540
%
%
W
mm
kg
°C
%
m3/
h
-
333
640
RPS
1110TL
2
300 (IT mains)
50 - 60
420
500
667
834
810
960
1280
1600
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
1000
1920
98,6
98,4
<40
<60
<80
<100
<120
1800 x
1800 x
2400x
2400x
3200x
3800x
4400x
2100x800 2100x800 2100x800 2100x800 2100x800 2100x800 2100x800
1150
1300
3000
1610
1850
IP 20
2450
3000
3550
-10 … 40
15...85 not condensing
4500
6000
7500
9000
Tripping value 30 kΩ,
Adjustable response value,
max. leakage capacitance
max. leakage capacitance 999.9 µF
30 µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
Grid monitoring
Overvoltage protection
Communication
Communication interface
RS485
*
1000 V upon request
** Design width increases by 600 mm per additional DC distributor.
*** Weight increases by 250 kg per additional DC distributor.
08/2010
RPS TL
25
4.1.3
Multiple String connected to 330 V mains
Type
RPS
420 TL
RPS
620 TL
RPS
830 TL
kip
416
623
831
A
V
V
-
700
1050
1400
2
3
Input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
Number of MPP trackers
Number of optional
DC distributors
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)**
V
Hz
kW
A
%
%
%
W
mm
Weight approx.
kg
Degree of protection
Environment
Ambient temperature
°C
Rel. air humidity
%
Rate of coolant air required m3/h
Protection and monitoring
Insulation monitor
-
RPS
1040 TL
RPS
1460 TL
1039
1247
1454
1750
900*
500 … 875
4
5
2100
2450
6
7
1
367
640
RPS
1220 TL
2
330 (IT mains)
50 - 60
550
733
917
1100
960
1280
1600
1920
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
1283
2240
98,6
98,4
<40
<60
<80
<100
<120
<140
1800 x
2400 x
3200 x
3800 x
4400 x
5000 x
2100 x 800 2100 x 800 2100 x 800 2100 x 800 2100 x 800 2100 x 800
1300
1850
2450
3000
3550
4100
IP 20
3000
4500
-10 … 40
15...85 not condensing
6000
7500
9000
10500
Tripping
value
30 kΩ,
Adjustable response value,
max. leamax. leakage capacitance 999.9 µF
kage capacitance 30
µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
Grid monitoring
Overvoltage protection
Communication
Communication interface
RS485
*
1000 V upon request
** Design width increases by 600 mm per additional DC distributor.
*** Weight increases by 250 kg per additional DC distributor.
26
RPS TL
08/2010
4.2
Master-Slave application
4.2.1
Master-Slave connected to 270 V mains
Type
Input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)
Weight approx.
Degree of protection
Environment
Ambient temperature
Rel. air humidity
Rate of coolant air required
Protection and monitoring
Insulation monitor
Grid monitoring
Overvoltage protection
Communication
Communication interface
* 1000 V upon request
08/2010
RPS 280 TL
RPS 340 TL
RPS 510 TL
RPS 680 TL
510
680
1050
1400
kip
280
340
A
V
V
600
700
V
Hz
kW
A
%
900*
425 … 875
250
540
%
%
W
mm
kg
°C
%
m3/
h
-
-
270 (IT mains)
50 - 60
300
450
640
960
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
600
1280
> 98,3
> 98,0
<40
2400 x
2100 x 800
1400
2400 x
2100 x 800
1550
<60
<80
3000 x
2100 x 800
2100
3800 x
2100 x 800
2700
IP 20
3000
-10 … 40
15...85 not condensing
4500
6000
Tripping value 30 kΩ,
max. leakage capacitance 30 µF
Adjustable response value,
max. leakage capacitance 999.9
µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
-
RS485
RPS TL
27
4.2.2
Master-Slave connected to 300 V mains
Type
DC side input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)
RPS 310 TL
kip
315
378
470
567
756
A
V
V
600
700
900
900*
460 … 875
1050
1400
V
Hz
kW
A
%
Weight approx.
kg
Degree of protection
Environment
Ambient temperature
°C
Rel. air humidity
%
Rate of coolant air required m3/h
Protection and monitoring
Insulation monitor
-
28
-
300 (IT mains)
50 - 60
333
420
500
640
810
960
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
280
540
%
%
W
mm
Grid monitoring
Overvoltage protection
Communication
Communication interface
* 1000 V upon request
RPS 380 TL RPS 470 TL RPS 570 TL RPS 760TL
667
1280
98,6
98,4
<40
<60
<80
2400 x
2100 x 800
2400 x
2100 x 800
3000 x
2100 x 800
3000 x
2100 x 800
3800 x
2100 x 800
1400
1550
1860
IP 20
2100
2700
3000
-10 … 40
15...85 not condensing
4500
Tripping value 30 kΩ,
max. leakage capacitance 30 µF
6000
Adjustable response value,
max. leakage capacitance
999.9 µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
RS485
RPS TL
08/2010
4.2.3
Master-Slave connected to 330 V mains
Type
DC side input
Recommended maximum
connected generator power
Max. input current
Max. DC input voltage
MPP area
AC side output
Mains voltage
Mains frequency
Rated power
Rated current
Power factor
Distortion factor
Control voltage, external
Efficiency
Maximum efficiency
European efficiency
Consumption at night
Mechanical
Dimensions (W x H x D)
Weight approx.
RPS 420 TL
kip
416
A
V
V
700
V
Hz
kW
A
%
%
%
W
623
831
1050
900*
500 … 875
330 (IT mains)
50 - 60
550
960
adjustable, > 0.99 at rated power
< 3 at rated power
230 V, 50 Hz
> 98,6
> 98,4
<60
2400 x
2100 x 800
3000 x
2100 x 800
kg
1550
2100
-
08/2010
<40
RPS 830 TL
mm
Degree of protection
Environment
Ambient temperature
°C
Rel. air humidity
%
Rate of coolant air required m3/h
Protection and monitoring
Insulation monitor
Grid monitoring
Overvoltage protection
Communication
Communication interface
* 1000 V upon request
367
640
RPS 620 TL
-
1400
733
1280
<80
3800 x
2100 x 800
2700
IP 20
3000
-10 … 40
15...85 not condensing
4500
6000
Tripping value 30 kΩ,
max. leakage capacitAdjustable response value,
ance
max. leakage capacitance 999.9 µF
30 µF
adjustable voltage and frequency range
EN Type 2, IEC Class 2 on mains and generator side
-
RS485
RPS TL
29
4.3
RPS
Device identification
0280
DE
0
1
1
0
Door arrester
0 right
1 left
DC-Input construction *
Multi String
0
1
2
3
Inverter module
2x unfused inputs per pole (see chapter 7.5.3)
DC distribution
none, generator connection to inverter module
Inverter module
2x fuse covered inputs per pole (see chapter 7.5.2)
DC distribution
none, generator connection to inverter module
Inverter module
2x unfused inputs per pole (see chapter 7.5.3)
DC distribution
Gen. connection to DC distribution (see chapter 7.6)
Inverter module
4x fused inputs per pole, (see chapter 7.5.1)
DC distribution
none, generator connection to inverter module
Master Slave
6
7
8
Generator construction
Inverter module
DC distribution
Generator construction
Insulated generator (see chapter 5.5.2)
2x fused inputs per pole, (see chapter 7.5.2)
Gen. connection to DC distribution (see chapter 7.6)
Inverter Module
DC distribution
Gen. grounded in negative pole (see chapter 5.5.3)
2x fused inputs per pole (see chapter 7.5.2)
Gen. connection to DC distribution (see chapter 7.6)
Generator construction
Gen. grounded in positive pole (see chapter 5.5.3)
Inverter Module
2x fused inputs per pole (see chapter 7.5.2)
Gen. connection to DC distribution (see chapter 7.6)
DC distribution
Input voltage range
0
900 V (Standard)
1
1000V
Country selection *
DE
ES
IT
FR
Germany
Spain
Italy
France
DC-input power (PV-generator power) *
XX kWp, Uac = 270V
0280 PDC = 280 kWp
0340 PDC = 340 kWp
0510 PDC = 510 kWp
0680 PDC = 680 kWp
0850 PDC = 850 kWp
XX kWp, Uac = 300V
0310 PDC = 315 kWp
0380 PDC = 378 kWp
0470 PDC = 470 kWp
0570 PDC = 567 kWp
0760 PDC = 756 kWp
0940 PDC = 944 kWp
1110 PDC = 1133 kWp
XX kWp, Uac = 330V
0420 PDC = 416 kWp
0620 PDC = 623 kWp
0830 PDC = 831 kWp
1040 PDC = 1039 kWp
1220 PDC = 1247 kWp
1460 PDC = 1454 kWp
Renewable Power System
* other variants on request
Figure 4-1: Code description
30
RPS TL
08/2010
5
Product overview / Description of function
The devices of the RPS TL series are grid-coupled solar inverters used for feeding the power generated by
PV modules to the medium voltage grid.
The grid-connected solar inverters of the RPS TL series are available both for Multiple String and MasterSlave application.
The solar inverters are of a modular design and comprise an AC distributor and at least 2 inverter modules.
In the case of the Master-Slave application, an additional DC distributor is used, in the case of the MultipleString application, this distributor is available as an option.
The modular design enables perfect adaptation of the individual inverter module to the solar generator and
results in an increased availability of the whole plant.
The RPS TL works fully automatically, i.e. no manual intervention is required for feed-in operation.
5.1
Multiple String application
The Multiple-String principle is based on the fact that the PV generator is divided in sub-generators, each of
which is assigned to its own solar inverter input and is operated individually at their respective optimum
working point (MPP = Maximum Power Point). Connection of the sub-generators can also be done via an
optional DC distributor.
The Multiple String application offers advantages in particular in the case of very large plants where parts of
the generator may be shadowed. In the case of only one MPP, this would result in yield losses in operation
of the remaining part of the generator. Due to sample scattering of the solar modules, so-called mismatching losses occur if the plant is operated at only one MPP. These mismatching losses are reduced if the generator is divided in several parts.
Use of the Multiple String system is recommended in particular in sun-rich regions and in the case of tracked
plants.
NOTE
08/2010
•
The voltage levels of the sub-generators must not deviate from one another by more than
50 V, i.e. the string configuration must be identical for all inverter modules. Each solar inverter should only be equipped with modules of the same type.
•
Connection of grounded generators is not permissible.
RPS TL
31
Figure 5-1: Product overview - Multiple String application
1
5.2
Inverter module
2
Product overview
AC distributor
3
Solar generator
Master-Slave application
In the case of the Master-Slave principle, the PV generator is not divided in sub-generators as in the case of
the Multiple String variant, but collected in the DC distributor on one DC busbar. All inverter modules are
connected to the busbar and networked in the DC-link in this way.
For the whole generator, only one operating point will be adjusted at any time. This operating point will be
determined by the master. The inverter modules (slaves) are activated/deactivated by the master in steps,
depending on the generator power.
The Master-Slave application is especially advantageous in areas with little sunshine where the inverters are
mostly operated in the part load range. Due to the fact that the individual inverter modules are operated at
a power where they exhibit the highest efficiency, this results in a higher efficiency of the whole plant in the
lower power range. Since only as many inverter modules are operated as actually required, the service life of
the slaves is increased, too.
NOTE
•
32
Connection of grounded generators is permissible. To that end, a suitable solar inverter
design, including earth fault controller in DC distributor, must be used.
RPS TL
08/2010
Figure 5-2: Product overview - Master-Slave application
1
2
5.3
Inverter module
AC distributor
Product overview
3
Solar generator
4
DC distributor
Product variants
The solar inverters are of a modular design and comprise an AC distributor and at least 2 inverter modules.
In the case of the Master-Slave application, an additional DC distributor is used, in the case of the MultipleString application, this distributor is available as an option.
The AC distributor is used for connecting the solar inverter to the supply grid.
In the case of the Multiple-String application, the sub-generators can either be connected to the inverter
modules directly or a DC distributor.
In the case of the Master-Slave application, the sub-generators must be connected to the DC distributor.
The solar inverter systems of type RPS TL are exclusively designed for connection to an IT grid.
Figure 5-3: Connection of solar inverter to IT grid
08/2010
RPS TL
33
The solar inverter systems must not be coupled galvanically on the AC side. This means that if more than
one system is used, these systems must be connected to separate transformers or transformer windings.
5.3.1
AC distributor
Figure 5-4: AC distributor, outside view
AC distributor
1
AC main switch rotary drive
2
Lock
The AC can be protected against unintentional reactivation by means of up to three padlocks. Shackle diameter = 7 mm.
34
RPS TL
08/2010
5.3.1.1 AC distributor with connection to main switch for systems ≤ RPS 620 TL
Figure 5-5: AC distributor, inside view, connection to main switch, systems ≤ RPS 620 TL
AC distributor
1
AC busbar
7
Control voltage connection
2
Insulation monitoring
8
Overvoltage protection - control voltage
3
Grid monitoring
9
Overvoltage protection - grid
4
AC main switch
10
AC main switch
5
Mains connection
11
Terminal blocks
6
Connection terminals for internal wiring
12
Terminal cover
08/2010
RPS TL
35
5.3.1.2 AC distributor with busbars for systems ≥ RPS 680 TL
Figure 5-6: AC distributor, inside view, connection with busbars, systems ≥ RPS 680 TL
AC distributor
1
AC busbar
6
Connection terminals for internal wiring
2
Insulation monitoring
7
Control voltage connection
3
Grid monitoring
8
Overvoltage protection - control voltage
4
AC main switch
9
Overvoltage protection - grid
5
Busbars
36
RPS TL
08/2010
5.3.2
Inverter module
Figure 5-7: Inverter module, outside view
Inverter module
1
Control unit "KP 500"
4
Lock
2
Control switch "Start/Stop"
5
Air inlet filter
3
Illuminated "Reset" button
6
DC switch (only in connection variants 6B and
6C, see Figure 5-8)
08/2010
RPS TL
37
For connection to the generator, three different connection variants are available. Depending on the application and generator, choose the matching connection variant.
Figure 5-8: Inverter module, inside view
Inverter module
1
AC Fuse disconnector
6
DC connection variants
2
AC main contactor
6A
Connection of 4 string groups
3
Grid monitoring
6B
Connection with DC switch and fuses
4
24 V power supply unit
6C
Connection with DC switch and terminal blocks
5
Frequency inverter AEC
38
RPS TL
08/2010
5.3.3
DC distributor
1
Figure 5-9: DC distributor, outside view
DC distributor
1
Lock
08/2010
RPS TL
39
1
1A
1B
2A
2B
2
Figure 5-10: DC distributor, inside view
DC distributor
1
Fuse holder for generator connection
2
Terminal blocks
1A
Fuse holder for generator connection
Positive pole, 4x
2A
Terminal blocks, positive
1B
Fuse holder for generator connection
Negative pole, 4x
2B
Terminal blocks, negative
In the case of the Master-Slave application, the sub-generators are connected to the DC distributor. The
sub-generators are connected to the fuse holders by means of tubular cable lugs. The inverter modules are
connected via the terminal blocks. The DC distributor can also be used in the Multiple String application.
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5.3.4
Rating plate
/
/
Figure 5-11: Inverter module rating plate
Identifications
Type identification
7
Order number
AC rated power
8
Date of delivery
AC rated voltage
9
Circuit diagram number
AC mains frequency
10
Article number
DC operating voltage range
11
Serial number
Maximum DC current
The inverter type is identified by the rating plate. You will find rating plates on the inside of the door and on
the outside on the side wall.
RPS 450-170TL refers to the maximum DC connected generator power (peak power) [kWp].
A system is composed of x inverter modules, an AC distributor and possibly a DC distributor.
A RPS 340 TL solar inverter is composed of 2 x inverter modules RPS450-170TL and 1 x AC distributor RPS
450-375AC.
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Bonfiglioli Vectron GmbH
D- 47 07 Krefeld
Tel. +49 2151/8396-0
Figure 5-12: Solar inverter rating plate
Identifications
1
Type identification
5
Order number
2
Rated power of solar inverter
6
Date of delivery
3
Rated voltage of solar inverter
7
Circuit diagram number
4
Rated frequency of solar inverter
8
Article number
9
Serial number
The solar inverter is identified by the rating plate. You will find rating plates on the inside of the door and on
the outside on the side wall.
RPS0340DE0110 is the type identification of the solar inverter. For a description of the code, refer to chapter
4.3 “Device identification”.
42
1
Renewable Power System
2
Recommended generator power to be connected in [kW]
3
Country code (DE = Germany)
4
Configuration of solar inverter
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5.4
Function
If the disconnecting device is closed, the energy coming from the PV field reaches the frequency inverter via
the DC EMC filter. Surge arresters in the DC input protect the frequency inverter against destructive overvoltage coupling from the PV field. In the case of an earth fault in the plant, either the insulation monitor in the
AC distributor or the earth fault control (in the case of the Master-Slave application variant with earth fault
control) is tripped
The frequency inverter controls the system. As from a DC voltage of 300 V, grid monitoring as well as insulation monitoring are activated.
If the plant was enabled via the control switch and no fault is present, the main contactor will be switched
on as soon as the voltage limit set in parameter U DC Start 830 is reached.
The frequency inverter is now connected to the AC distributor via the sine filter and the line choke and thus
to the grid. One auxiliary contact of the main contactor activates feed-in mode and the MPP controller in the
frequency inverter. The MPP controller adjusts the DC voltage such that a power optimum is obtained. In the
case of the Master-Slave application, the master will start first and activate/deactivate the slaves, depending
on the irradiation. In the case of the Multiple-String application, the inverter modules work independent from
one another and start feed-in mode, depending on the connected sub-generator. Although the same photovoltaic modules are connected to each inverter module, the inverter modules of a solar inverter will not start
operation at the same time but with a slight offset due to manufacturing tolerances and different conditions
at the place of installation (shadowing).
If the insolation becomes so weak that the power of the PV field is no longer enough for economical operation of the plant the inverter modules are disconnected from the AC distributor and thus the grid again. In
the case of the Master-Slave application, the master will be the last to stop operation. In the case of the
Multiple-String application, the inverter modules are not all disconnected at the same time, but with a slight
offset.
In the evening, supply of the monitoring systems is interrupted, only the frequency inverter is supplied with
power via the AC mains. This ensures that communication with the inverter is possible at night, too.
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Inverter module
7
6
5
8
AEC
4
9
U/f
10
3
VAL
CTRL
PARA CPY
RUN
FAULT
WARN REM F
-1
h min
%mVA
kHz/s
2
12
STOP
RUN
11
FUN
ESC
ENT
1
+
13
L1 L2 L3
Figure 5-13: Inverter module block diagram
Identifications
1
Connection Generator
8
Line choke
2
Disconnecting device
9
Mains contactor
3
Surge arrester
10
Mains monitoring
4
Current transformer
11
Operating unit
5
DC EMC Filter
12
Fuses
6
Frequency inverter
13
Connection AC Distribution
7
Sine filter
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AC distributor
L1 L2 L3
1
RIT
2
3
4
5
6
U / fRIT
7
L1 L2 L3
Figure 5-14: AC distributor block diagram
Identifications
1
Connection inverter module
5
Mains switch
2
Insulation monitoring
6
Mains monitoring
3
Control power transformer
7
Connection transformer
4
Surge arrester
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DC distributor
+
-
3
4
+
-
5
6
+
-
7
8
+
-
9
10
-
+
1
2
Figure 5-15: Multiple String DC distributor block diagram
Identifications
1
Four connections to inverter module
6
Four inputs to inverter module 2
2
Four connections to inverter module
7
Four inputs to inverter module 3
3
Four inputs to inverter module 1
8
Four inputs to inverter module 3
4
Four inputs to inverter module 1
9
Four inputs to inverter module 4
5
Four inputs to inverter module 2
10
Four inputs to inverter module 4
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+
-
4
5
+
-
6
7
+
-
8
9
+
2
11
10
-
+
1
3
Figure 5-16: Master-Slave DC distributor block diagram
Identifications
1
Four connections to inverter module
7
Four inputs to inverter module 2
2
Current transformer
8
Four inputs to inverter module 3
3
Four connections to inverter module
9
Four inputs to inverter module 3
4
Four inputs to inverter module 1
10
Four inputs to inverter module 4
5
Four inputs to inverter module 1
11
Four inputs to inverter module 4
6
Four inputs to inverter module 2
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5.5
Monitoring and protective functions
DANGER
Live components - Risk of electric shock!
•
Only qualified electrical staff may inspect the monitoring equipment.
5.5.1
•
High mains voltage and high DC voltage from solar modules.
•
Using suitable protective equipment, secure live components in the work area to prevent
contact.
Grid monitoring
A mains monitoring device with combined voltage and frequency monitoring is installed in the solar inverter.
Adjustment is not required. By default, this monitoring function is set to suitable values.
-
The response values are adjustable,
-
Error message F0405 "Grid failure" is triggered if the grid voltage or frequency is outside of the adjusted range
5.5.2
Insulation monitoring
Most PV plants are IT systems. The insulation monitor is used for identifying insulation defects in the positive
or negative pole of the PV generator caused by insulation damage. In the case of grounded PV plants, earthfault control will be used instead of the insulation monitor. Also refer to chapter 5.5.3 "EFC (Earth Fault Control)"
-
5.5.3
Fault message F0404 "Insulation" when the value is below the response threshold valid for the relevant system.
EFC (Earth Fault Control)
5.5.3.1 General information
NOTE
The earth fault control is installed in the DC distributor and can only be used in the case of the
Master-Salve application.
The use of certain module types requires earthing of the PV generator at the negative or positive pole. The
solar inverters designed for this application, are provided with high-performance circuit breakers with adjustable trip current. The insulation monitor required for IT systems is not required in this case. The highperformance circuit breaker signals earth faults at the non-grounded pole. In the case of an earth fault at
the non-grounded pole, a current will flow between the defective area and the earth fault controller. This
results in a tripping of the high-performance circuit breaker. Grounding of the grounded pole is stopped as
soon as the earth fault control has tripped.
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1
2
3
Figure 5-17: Earth fault control with grounding at negative pole of PV generator
1
PV generator
2
RPS
3
Earth fault monitor
Under certain circumstances, it may take a long time until an earth fault in the non-grounded pole results in
the earth fault control being tripped. It might not even be tripped at all. Irradiation and the earth resistance
influence the fault current. In the case of high earth resistance or low irradiation, particularly with low-power
inverters, an earth fault in the non-grounded pole will not result in tripping of the earth fault control immediately.
NOTE
Requirements to be met by the plant
The following instructions must be followed:
•
Ensure short-circuit and earth fault safe installation of the DC cables
•
Ensure good reference to grounding of solar inverter
•
The insulation monitor of the solar inverter does not exist in the case of grounded positive or negative pole. Both poles must be protected against direct contact.
•
Grounding may only be effected in the solar inverter, additional earthing in the PV generator or the connection boxes is not permissible.
The tripping of the earth fault control results in error message F0404 "Insulation". Before the inverter can be
commissioned again, the insulation fault must be repaired. Operation of the solar inverter with the earth
fault control tripped is not permissible.
DANGER
Live components - Risk of electric shock!
•
EFC protects the equipment only, it does not protect persons. Grounded PV plants may
only be accessed by qualified and instructed electricians. If the plant is to be accessed by
non-instructed staff, the grounding must be undone.
5.5.3.2 Operating behavior
An earth fault in the grounded pole has a negative impact on earth fault control and plant operation. For this
reason, the insulation of the grounded pole must be checked at regular intervals to ensure that there is no
earth fault at the grounded pole.
In the case of an earth fault at the grounded pole, part of the total current will flow through the earth fault
controller during operation and can result in the EFC being tripped.
In the case of an earth fault at both poles, earth fault control will have no effect. The fault current will not
flow through the earth fault controller and the circuit cannot be opened for this reason. This might damage
the plant.
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NOTE
Maintenance work
The following instructions must be followed:
•
The generator grounding is undone when the DC disconnector in the solar inverter is
opened. Insulation measurements may only be carried out on the PV generator when the
solar inverter DC disconnector is open.
Setup values
5.5.4
Setting range
Factory settings
3,8 A to 5,8 A
3,8 A
Temperature monitoring
The inside temperature and the heat sink temperature of the frequency inverter as well as the temperature
of the sine filter and line choke are monitored.
-
Temperature switches in coils of sine filter and line choke
Fault message F0403 "Transformer overtemperature" if winding temperature is too high
-
Power reduction if max. permissible temperature of frequency inverter is reached
Fault message F0200 "Heat sink overtemperature" if maximum heat sink temperature is exceeded
Fault message F0300 "Inside temperature" if maximum inside temperature is exceeded
Fault message F0301 "Undertemperature" if minimum inside temperature is not reached
-
Electrical cabinet temperature control, fan activation temperature can be parameterized
5.5.5
Surge arrester
-
Overvoltage protection on AC and DC side
-
Arrester class: EN type 2, IEC class 2, VDE class C
-
Safe protection can be reached by external lightning protection provided by the customer, e.g. lightning
arresters, arrester class EN type 1, IEC class 1, VDE class B.
-
Error indication by visual signaling at surge arresters
-
A warning or error message is displayed on the control unit if the surge arrester is not functional. Also
refer to chapter 9.14.2 "Operation mode overvoltage protection".
-
Warning W8000 "Overvoltage protection" in setting "1 – Warning" (default setting) for Operation mode -
Overvoltage protection 828. The solar inverter remains in operation.
-
Error F0406 "Overvoltage protection" in setting "2 – Error cut-off" for Operation mode - Lightning pro-
tection 828. The solar inverter is switched off.
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6
6.1
Installation
Place of installation/environmental conditions
NOTE
Damaging of solar inverter
If not installed properly or if installed in inappropriate environments, the solar inverter may be
damaged. The following instructions must be followed:
•
Install the solar inverter in a closed, well-ventilated environment (technical equipment
room), protected against rain, condensation, moisture and dust. Note the degree of protection.
•
The temperature at the place of installation must be between -10 and +40 °C.
•
Do not expose the solar inverter to direct sun impact at the place of installation.
•
Relative air humidity must be in the range between 15 % to 85 %.
•
Maximum installation altitude 1000m above sea level. In the case of greater altitudes, a
power reduction 5%/1000m and coolant temperature reduction 3.3°C/1000m are required.
•
The solar inverter must not be exposed to condensation water.
•
The inlet and outlet filters must not be covered nor closed.
•
The heat produced in the solar inverter is dissipated to the outside by means of roof
fans. Keep a minimum distance of 250 mm to the ceiling.
•
Do not place any objects on the solar inverter. Keep the top side of the solar inverter
clear.
•
The equipment room must not be heated up by the air discharged from the solar inverter.
•
Install the solar inverter on level and non-slip floor. The floor and the environment must
be non-flammable.
•
The foundation must be designed to bear the weight of the solar inverter (sufficient carrying capacity).
•
If necessary, install cable conduits in the foundation of the place of installation. The connecting cables can enter the solar inverter from below.
•
Align the solar inverter on the floor such that it is straight.
•
Comply with noise protection and EMC requirements.
•
Ensure there is sufficient space for escape routes and for operating and maintenance
work.
•
BONFIGLIOLI VECTRON recommends installing a smoke detector in the equipment room.
EMC and noise emission of the inverter are designed for operation an industrial environment.
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6.2
Cooling
Figure 6-1: Air flow
For cooling the solar inverter, the cooling air is taken in through the ventilation openings in the doors and
blown off via the fans in the upper area of the inverter. Air filters are provided in the ventilation openings. It
is possible to install several solar inverters side by side.
NOTE
Damaging of solar inverter
For the minimum and maximum ambient temperature and relative moisture, refer to the
tables in chapter 4"Technical data".
For the cooling air requirements, refer to the tables in chapter 4 "Technical data".
If the specified cooling air values cannot be reached, the operator must install additional ventilation equipment at the place of installation.
If the cooling air is very dirt-loaded, the operator must install additional filters (e.g. in building).
When the unit leaves the factory, the overtemperature cut-off and the parameters for control
of the electrical cabinet fans are set to suitable values.
For the cleaning intervals of the air filters and exhaust air grilles, refer to the table in chapter 10.2 "Service
intervals/preventive maintenance".
The fans must not be covered. Do not place any objects on the plant.
Insufficient cooling can reduce the feed-in power.
Discharge the hot exhaust air of the inverter from the plant if possible.
The equipment room must not be heated up by the discharged air.
Do not exceed the maximum ambient temperature.
The base strips must be mounted to the solar inverter. All cable entries must be sealed tightly
(dust-proof) in order to prevent intake of unfiltered air.
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6.3
Distance to ceiling
Figure 6-2: Distance to ceiling
NOTE
Damaging of solar inverter
• All solar inverters must keep a distance to the ceiling of at least 250 mm.
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6.4
Mechanical connection of joined modules
NOTE
The AC distributor must not be on the outside as from 5 inverter modules.
Refer to the factory configurations in chapter 3.2 "Arrangement of electrical cabinet modules
and transport units".
•
Install the supplied junction seal between the connection rails of the modules (between joined electrical
cabinets).
•
Fix the modules to one another using connector 1 and bracket 2.
1
2
6 pcs.
Turn in screws, drive in connector using a hammer and secure it.
1
4 pcs.
Fix bracket.
2
Either:
-
horizontally and vertically using 8 sheet metal screws
-
horizontally using 2 bolts and M8 nuts, vertically using 4 sheet metal screws
Figure 6-3: Joining by means of connector and bracket
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7
7.1
Electrical connections
Special safety instructions
DANGER
Live components - Risk of electric shock!
In the case of improper installation, accidents or material damage may result from noncompliance with the safety instructions. Note:
•
Only qualified technical staff may carry out the electrical installation.
•
High mains voltage and high DC voltage from solar modules.
•
The unit may only be connected with the power supply to the plant switched off.
•
The plant must be isolated safely from the PV generator and the grid.
•
Switch off external disconnecting devices. Secure to prevent restarting.
•
Verify safe isolation from power supply.
•
Earth and short-circuit.
•
Even with the AC and DC disconnecting device turned off, dangerous voltage levels may
be present in the solar inverter. This is the case if:
•
-
No external isolation facility is installed and turned off.
-
The DC link capacitors are still charged.
Wait for some minutes until the DC link capacitors have discharged before starting to
work at the unit.
Using suitable protective equipment, secure live components in the work area to prevent
contact.
Depending on the power class, details of the electrical connection may differ from the layout
described below.
Lightning protection
The DC and AC side of the solar inverters are protected by type 2 surge arresters against overvoltage.
In order to achieve lightning protection as per DIN VDE 0185-4, additional lightning arresters must be installed on the building or in the plant.
Tools
For electrical connection provide the following tools:
- Stripping tool
- Crosshead screw driver
- Torx screw driver
- Allen wrench
- Torque wrench
Cable installation
The cables must be prepared properly by the operator before connection, i.e. sufficient length and crosssection.
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7.2
Internal wiring
The transport units, i.e. connected systems, have already been pre-wired in the factory.
In the case of two or more transport units, they must be wired internally.
The cables in the modules have already been prepared and provided with sleeves and identifications. The
inscription on the sleeves indicates the terminals to which the cable wires must be connected.
Equipotential bonding is to be ensured via the PE busbars provided in the electrical cabinet modules.
In the transport units, the PE busbars are already pre-wired.
Wiring of the PE busbars is only required between the transport units.
NOTE
•
Before connecting external voltage, the internal wiring must be done.
•
The representations in the instructions may deviate from the specifications in the circuit
diagrams. Note the information provided in the circuit diagrams. You will find the relevant
circuit diagrams in the bags in the electrical cabinets. These circuit diagrams contain information on connection of the terminals.
In the following (chapter 7.2.1 through 7.2.9), the connections of the internal wiring are shown using an
example, consisting of:
1 x AC distributor (AC) and 4 inverter modules (WR) split up in two transport units:
Transport unit 1: AC + WR1 + WR2
Transport unit 2: WR3 + WR4
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7.2.1
Control voltage connection
Figure 7-1: Control voltage connection
Transport unit 1 (AC + WR1 + WR2) has already been pre-wired (full lines):
1. Terminal 1, 2 and PE of terminal strip X1.2 of the AC distributor and terminal L10, L0 and PE of terminal
strip X2 of inverter module 1 have been pre-wired.
2. Terminal 3, 4 and PE of terminal strip X1.2 of the AC distributor and terminal L10, L0 and PE of terminal
strip X2 of inverter module 2 have been pre-wired.
Wiring of transport unit 1 and transport unit 2 is required (broken lines):
3. Wire terminal 5, 6 and PE of terminal strip X1.2 of the AC distributor and terminal L10, L0 and PE of
terminal strip X2 of inverter module 3.
4. Wire terminal 7, 8 and PE of terminal strip X1.2 of the AC distributor and terminal L10, L0 and PE of
terminal strip X2 of inverter module 4.
NOTE
The number of terminals at terminal strip X1.2 in the AC distributor depends on the number of
connected inverter modules.
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7.2.2
Connection of overvoltage protection
You will find the relevant circuit diagrams in the bags in the electrical cabinets. These circuit
diagrams contain information on connection of the terminals.
Figure 7-2: Connection of overvoltage protection
Transport unit 1 (AC + WR1 + WR2) has already been pre-wired (full lines):
1. Terminal 1 and 2 of terminal strip X3.3 of the AC distributor and terminal 1 and 2 of terminal strip X3 of
inverter module 1 have been pre-wired.
2. Terminal 3 and 4 of terminal strip X3.3 of the AC distributor and terminal 1 and 2 of terminal strip X3 of
inverter module 2 have been pre-wired.
Wiring of transport unit 1 and transport unit 2 is required (broken lines):
3. Wire terminal 5 and 6 of terminal strip X3.3 of the AC distributor and terminal 1 and 2 of terminal strip
X3 of inverter module 3.
4. Wire terminal 7 and 8 of terminal strip X3.3 of the AC distributor and terminal 1 and 2 of terminal strip
X3 of inverter module 4
NOTE
The number of terminals at terminal strip X3.3 in the AC distributor depends on the number of
connected inverter modules.
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7.2.3
Connection of insulation monitoring
Figure 7-3: Connection of insulation monitoring
Transport unit 1 (AC + WR1 + WR2) has already been pre-wired (full lines):
1. Terminal 1 and 2 of terminal strip X3.1 of the AC distributor and terminal 4 and 5 of terminal strip X3 of
inverter module 1 have been pre-wired.
2. Terminal 3 and 4 of terminal strip X3.1 of the AC distributor and terminal 4 and 5 of terminal strip X3 of
inverter module 2 have been pre-wired.
Wiring of transport unit 1 and transport unit 2 is required (broken lines):
4. Wire terminal 5 and 6 of terminal strip X3.1 of the AC distributor and terminal 4 and 5 of terminal strip X3
of inverter module 3.
5. Wire terminal 7 and 8 of terminal strip X3.1 of the AC distributor and terminal 4 and 5 of terminal strip X3
of inverter module 4.
NOTE
•
Grounded generators can only be connected to the Master-Slave system. To that end, the
insulation monitoring in the AC distributor is removed and connected to the EFC in the DC
distributor. In this case, the earth fault control is wired like the insulation monitor. Additionally, the signal contact of the earth fault control must be connected to the AC distributor.
The number of terminals at terminal strip X3.1 in the AC distributor depends on the number of
connected inverter modules.
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7.2.4
Connection of system bus
Figure 7-4: Connection of system bus
Transport unit 1 (AC + WR1 + WR2) has already been pre-wired (full lines):
1. Terminal 1 and 2 of terminal strip X4.1 of inverter module 1 and terminal 1 and 2 of terminal strip 4.1 of
inverter module 2 have been pre-wired.
Transport unit 2 (WR3 + WR4) has already been pre-wired (full lines):
2. Terminal 1 and 2 of terminal strip X4.1 of inverter module 3 and terminal 1 and 2 of terminal strip 4.1 of
inverter module 4 have been pre-wired.
Wiring of transport unit 1 and transport unit 2 is required (broken lines):
3. Wire terminal 1 and 2 of terminal strip X4.1 of inverter module 2 to terminal 1 and 2 of terminal strip
X4.1 of inverter module 3.
The bus termination required in a string in the physically first and last client (see example in Figure 7-4:
Inverter 1 and Inverter 4) can be activated via the two DIP switches S1 and S2 on extension module EM-IO01. In all other clients, the bus termination must remain deactivated (DIP switches S1 and S2 OFF).
You will find the extension module on the AEC frequency inverter
The bus termination switches in the inverter modules were set correctly in the factory.
For termination, set DIP switch S1 to ON and S2 to OFF.
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Figure 7-5: System bus termination example
The connection to the system bus is done via terminal strip X4.1.
For details on the pin assignment of terminal strip X4.1, refer to the following table
Terminal
1
1
2
2
Name
CAN-Low
CAN-Low
CAN-High
CAN-High
Terminal strip X4.1
Function
CAN-Low (System bus)
CAN-Low (System bus)
CAN-High (System bus)
CAN-High (System bus)
The cable shield must be connected to PE.
A
Figure 7-6: Connection of shield
1. Connect data cable as shown in Figure 7-4.
2. Connect shield (A) to the PE busbar provided for this purpose. Ensure proper shield contact and tighten
shield clamps manually.
3. Check correct fit of cable by pulling the data cables gently.
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7.2.5
RS485 connection
Figure 7-7: RS485 connection
Transport unit 1 (AC + WR1 + WR2) has already been pre-wired (full lines):
1. Terminal 1 and 3 of terminal strip X4.2 of inverter module 1 and terminal 2 and 4 of terminal strip 4.2 of
inverter module 2 have been pre-wired.
Transport unit 2 (WR3 + WR4) has already been pre-wired (full lines):
2. Terminal 1 and 3 of terminal strip X4.2 of inverter module 3 and terminal 2 and 4 of terminal strip 4.2 of
inverter module 4 have been pre-wired.
Wiring of transport unit 1 and transport unit 2 is required (broken lines):
3. Wire terminal 1 and 2 of terminal strip X4.2 of inverter module 2 to terminal 2 and 4 of terminal strip X4.2
of inverter module 3.
In the physically last client, the bus termination must be activated:
The bus termination depends on the location of the data logger connection:
If the data logger is connected to inverter module 4, the termination must be done in inverter module 1.
If the data logger is connected to inverter module 1, the termination must be done in inverter module 4.
The bus termination is not relevant to operation of the solar inverter, but required for the communication
with the data logger.
The physically first and last client must be terminated, i.e. provided with a bus termination resistor ON. To
that end, DIP switch S1 can be used, see Figure 7-8: RS485 module. This is a passive termination.
By default, the bus termination is OFF.
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Figure 7-8: RS485 module
The RS485 assembly can be found on the frequency inverter AEC.
The RS485 interface is connected via terminal strip X4.2.
For details on the pin assignment of terminal strip X4.2, refer to the following table.
Terminal
1
2
3
4
Name
A
A’
W
B’
Terminal strip X4.2
Function
Short-circuit proof and functionally insulated; max. current 60 mA
Bridge from terminal 1 for cable loops
Short-circuit proof and functionally insulated; max. current 60 mA
Bridge from terminal 3 for cable loops
NOTE
08/2010
•
Ensure proper bus termination. Otherwise, communication via the RS485 interface is not
possible.
•
Active termination is permissible only once per network. Termination via an external circuit and the DIP switch at the same time is not permissible.
•
Ensure that the GND is not interrupted. In practice, this result in a better fault behavior.
•
The terminals for signals A and B are parallel. This enables wiring of several inverter
modules.
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Solar inverter 1
Termination OFF
A
Solar inverter 2
Solar inverter 20
A
A
Termination OFF
B
1 2 3 4
Termination OFF
B
1 2 3 4
B
1 2 3 4
Data logger
RS485-A
1 2 3 4
-X4.2
B
-X4.2
A
-X4.2
Termination ON
max. 1000 m
Figure 7-9: Communication wiring example
NOTE
•
64
Via a data logger RPSlog1000, the data of up to twenty solar inverters can be recorded.
For details of the data logger, refer to the separate RPSlog1000 user manual.
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The cable shield must be connected to PE.
A
Figure 7-10: Connection of shield
1. Connect data cable as shown in Figure 7-7.
2. Connect shield (A) to the PE busbar provided for this purpose. Ensure proper shield contact and tighten
shield clamps manually.
3. Check correct fit of cable by pulling the data cables gently.
NOTE
7.2.6
•
For connection of further inverter modules or data loggers, a twisted cable with braided
shield (no foil shield) must be used.
•
Control and communication cables must be kept physically separate from the power
cables. The braided shield of the communication cable is to be connected to ground (PE)
on both sides on a large area and with good conductivity.
Connection of AC busbars
The AC voltage busbars are used for connecting the AC distributor to one or more inverter modules and for
connecting the inverter modules to one another on the AC side.
The modules must be installed level in order to connect the busbars to one another. The busbars of the
modules are connected without drilled holes.
NOTE
During transport of the connected systems, the screws of the busbar connectors may loosen.
For this reason, make sure to re-tighten the screws and check the connectors for tight fit before commissioning in any case.
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Figure 7-11: Connection of AC busbars
In the case of transport units (in example transport unit 1: AC + WR1 + WR2 and transport unit 2: (WR3 +
WR4), the AC busbars were already connected in the factory (see marks 1, 2 and 3).
In order to connect transport unit 1 and transport unit 2 to one another, the busbar connectors of inverter
module 2 must be connected to the busbar connectors of inverter module 3 (see mark 4).
•
Place the busbar connectors (1) on the busbars (2). Tighten screws M8.
2
1
M8
Tightening torque: 18-22 Nm
Figure 7-12: Assembly of AC busbars
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7.2.7
Connection of Multiple String DC distributor
+
-
+
-
+
-
+
-
+ -
Figure 7-13: Connection of Multiple String DC distributor
In the case of the Multiple String application the DC distributor is connected to inverter connection variant
6C (see Figure 5-8, chapter 5.3.2 "Inverter module" and chapter 7.5.3 "Variant with DC switch and terminal
blocks")
The DC distributor and the inverter modules of transport unit 2 (DC + WR3 + WR4) have already been prewired (full lines). The cables for connection of the inverter modules of transport unit 2 (WR3 + WR4) are
pre-assembled.
Wiring between transport unit 1 and transport unit 2 is required (broken lines):
The free terminal blocks of the DC distributor are to be connected to the corresponding terminal blocks of
inverter modules 1 and 2.
NOTE
08/2010
•
In any case make sure that the two inverter modules are not coupled galvanically on the
DC-side.
•
The positive and negative pole of a sub-generator must be connected to the same inverter module.
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7.2.8
Connection of Master-Slave DC distributor
+-
+-
+-
++ -
Figure 7-14: Connection of Master-Slave DC distributor
In the case of the Master-Slave application, the DC distributor is connected to inverter connection variant 6B
(see Figure 5-8, chapter 5.3.2 "Inverter module" and chapter 7.5.2 "Variant with DC switch and fuseprotected DC input")
The DC distributor and the inverter modules of transport unit 2 (DC + WR3 + WR4) have already been prewired (full lines). The cables for connection of the inverter modules of transport unit 2 (WR3 + WR4) are
pre-assembled.
Wiring between transport unit 1 and transport unit 2 is required (broken lines):
The free terminal blocks of the DC distributor are to be connected to the corresponding DC switch terminals
of inverter modules 1 and 2.
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7.2.9
Connection of current transformer
Figure 7-15: Connection of transformer
In the case of the Master-Slave application, it is necessary to pass the actual total current value from the DC
distributor on to the inverter modules.
The current transformer of the DC distributor and the inverter modules in transport unit 2 (DC + WR3 +
WR4) have already been pre-wired (full lines).
Wiring between transport unit 1 and transport unit 2 is required (broken lines):
1. Connect terminal 3 of terminal strip X4.3 of the DC distributor to terminal 1 of terminal strip X4.3 of
inverter module 2.
2. Connect terminal 4 of terminal strip X4.3 of the DC distributor to terminal 1 of terminal strip X4.3 of
inverter module 1.
3. Connect terminal 7 of terminal strip X4.3 of the DC distributor to terminal 2 of terminal strip X4.3 of
inverter module 2.
4. Connect terminal 8 of terminal strip X4.3 of the DC distributor to terminal 2 of terminal strip X4.3 of
inverter module 1.
Internal wiring is not required in the case of the Multiple String application as this application is not equipped
with a current transformer.
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7.3
Mains connection
Depending on the inverter system, mains connection is done either at the main switch or the busbars.
7.3.1
Connection to main switch
In the case of systems ≤ RPS 620 TL mains connection of the solar inverter is done via terminal blocks directly at the main switch.
1. Unscrew a bottom plate (1) in the rear part of the plant.
Figure 7-16: Disassembly of bottom plate
2. For cable entry, unscrew a base sheet. This is only required if no cable conduit is provided in the foundation for guiding the cables into the solar inverter from below.
If cables are to enter from the back side, remove the base sheet in the rear part of the solar inverter. If
cables are to enter from the side, the base sheet on the relevant side of the solar inverter must be removed.
Figure 7-17: Disassembly of base sheet
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3. If the cables enter from the side/rear, cut suitable holes in the base sheet for the cable glands.
4. Pull the connecting cables into the solar inverter.
Figure 7-18: Connection of cables
5. To provide for strain relief, fix the supply cables to the cable clamping rail using cable clamps. Use aluminum cable clamps.
6. Using the supplied foamed material seal, to seal the open area in the solar inverter. All cable entries must
be sealed tightly in order to prevent intake of unfiltered air.
7. Fix the base sheets again.
8. Fix acrylic glass again.
For mains connection, use bare copper or aluminum cables, solid aluminum conductors cannot be used.
Type
Connections per phase
Cable size
Torque
RPS 280 TL - RPS 310 TL
3
70mm² … 185mm²
43 Nm
RPS 340 TL - RPS 620 TL
4
70mm² … 240mm²
42 Nm
Type
Connections
Type of connection
Torque
Earth conductor (PE)
6
Bolt M10x30
25 Nm
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2
Figure 7-19: Connection to main switch
AC distributor
1
Main switch
4
Terminal cover
2
Main switch
5
Busbars for PE connection
3
Terminal blocks
7.3.2
Connection to busbars
In the case of systems ≥ RPS 680 TL mains connection of the solar inverter is done via busbars.
1. Unscrew a bottom plate (1) in the rear part of the plant.
Figure 7-20: Disassembly of bottom plate
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1
Bottom plate
4
Busbar for phase 3
2
Busbar for phase 1
5
Busbar for PE connection
3
Busbar for phase 2
2. For cable entry, unscrew any base sheet. This is only required if no cable conduit is provided in the foundation for guiding the cables into the solar inverter from below.
If cables are to enter from the back side, remove the base sheet in the rear part of the solar inverter. If
cables are to enter from the side, the base sheet on the relevant side of the solar inverter must be removed.
Figure 7-21: Disassembly of base sheet
3. If the cables enter from the side/rear, cut suitable holes in the base sheet for the cable glands.
4. Pull the connecting cables into the solar inverter.
5. To provide for strain relief, fix the supply cables to the cable clamping rail using cable clamps. Use aluminum cable clamps.
6. Using the supplied foamed material seal, to seal the open area in the solar inverter. All cable entries must
be sealed tightly in order to prevent intake of unfiltered air.
7. Fix the base sheets again.
Figure 7-22: Connection of cables
8. Fix acrylic glass again.
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7.3.2.1 Mains connection of AC distributor
The solar inverter is designed for connection to an IT grid.
Use tubular cable lugs for connection.
Ensure that the cross-section and voltage resistance of the cables is sufficient.
Note that the cross-section of PE is sufficient.
•
Remove the acrylic glass cover installed in front of the AC connection busbars.
•
Connect PE conductor to PE busbar. To provide for equipotential bonding, connect all the electrical cabinets with one another to PE.
•
Connect L1, L2 and L3 to the AC busbars. Note the marks provided on the AC busbars.
L1
L2
L3
PE
M16x30, max. tightening torque: 25 Nm
Figure 7-23: AC connection
Type
Connections per phase
Type of connection
Torque
RPS 680 TL - RPS 1460 TL
6
Bolt M16x30
25 Nm
Type
Connections
Type of connection
Torque
Earth conductor (PE)
6
Bolt M10x30
25 Nm
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7.4
Control voltage connection
Depending on the design of the solar inverter, the 230 V power supply for the solar inverter controller can
be generated internally or supplied via a connected external power source.
If an internal 230 V power supply is available, no external power supply may be connected.
An external 230 V power supply must be connected to the terminal provided for this purpose. Power must
be supplied from a source designed for this purpose. The operator must ensure that the 230 V power supply
is protected by means of a 16 A back-up fuse.
Internal power supply for controller
A control power transformer is installed. Power supply for the controller of the solar inverter is tapped internally from the AC mains supply. No power supply may be connected to the control voltage terminals.
External power supply for controller
A control transformer is not installed.
•
Connect an external 230 V/50 Hz power supply (Pmin = 250 W/inverter module) to the terminal X2 in the
AC distributor designated for that purpose.
Connection
Max. cable cross section
mm2
Recommended back-up fuse
A
2,5
16
Use wire-end ferrules.
Protect the external 230 V power supply by means of a 16 A back-up fuse.
The following components are connected to the 230 V power supply:
-
Contactors
-
Insulation monitor
-
24 V power supply unit
-
Grid monitoring
-
Electrical cabinet fan
-
Options, extensions
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X2
L10 L0 PE
1
Figure 7-24: AC distributor, connection of control voltage
AC distributor
1
Control voltage connection
-
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7.5
Generator connection
NOTE
Damaging of solar inverter
•
The values specified in "Technical data" for maximum DC input voltage and maximum DC
input current must not be exceeded. Otherwise the unit may be damaged.
•
When connecting the DC cables ensure that the polarity of the solar modules matches
the polarity of the connecting terminals of the DC main switch. Prevent short circuits between DC+ and DC-.
Before connecting the solar modules, verify if the voltage value of the solar modules as specified by the
manufacturer match the actual values. When measuring the voltage, note that solar modules supply a higher
DC voltage if the insolation remains the same while temperatures drop.
Ensure that the cross-section and voltage resistance of the cables is sufficient.
Note the maximum cable cross-sections.
Do not exceed the specified tightening torques.
Do not divide the connections of a sub-generator plus and minus pole to several inverter modules (only applies to Multiple String).
Generator connection can be done directly to the inverter modules (Multiple String) or the DC distributor
(Master-Slave). Connection to the DC distributor is also possible in the case of the Multiple-String application.
Three connection variants are available for connecting a generator to inverter modules
7.5.1
Variant with 4 fuse-protected inputs
In this variant, you can connect up to 4 string groups to one inverter module. Connection is done to fuse
holders.
Figure 7-25: DC connection 4 string groups
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Due to the limited rated current of the fuses, at least two string groups must be connected.
The rated fuse current depends on the cable size used by the customer.
The fuses are not included in scope of supply.
DC connection
Technical data
Size
Rated voltage
Fixture
Tightening torque
Rated current
NH 1
1000 V DC
Bolt M10 x 40
32 Nm
50 A, 63 A, 80 A, 100 A, 125 A, 160 A, 200 A
•
Remove the acrylic glass cover installed in front of the terminals.
•
Connect the positive pole and the negative pole of the PV field to the terminals. Use tubular cable lugs.
•
For strain relief, fix cable to cable clamping rail.
•
Fix acrylic glass again.
7.5.2
Variant with DC switch and fuse-protected DC input
NOTE
•
This variant is obligatory in the case of the Master-Slave system.
In this variant, you can connect up to two string groups to one inverter module. Connection is done to the
DC main switch using tubular cable lugs.
Figure 7-26: Connection with DC switch and fuses
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1. Pull off the covers of the DC main switch.
2. Connect the positive pole and the negative pole of the PV field to the terminals of the DC main switch.
Q10
+
-
Figure 7-27: DC connection cable lug sizes/distances
Figure 7-28: DC connection with two cables per pole
3. After installation, the covers of the DC main switch must be fixed again.
4. Between the fixed tubular cable lugs at the positive and negative pole, the specified minimum distance
dmin must be kept.
5. Do not exceed the maximum width wmax of the tubular cable lugs.
•
Use tubular cable lugs for connection.
•
For strain relief, fix cable to cable clamping rail.
•
Ensure that the cross-section and voltage resistance of the cables is sufficient.
•
Do not exceed the specified tightening torques.
DC connection
Technical data
Fixture
Minimum distance between tubular cable
lugs dmin
Max. width of tubular cable lugs wmax
Tightening torque
08/2010
Bolt M10 x 30
10 mm
34 mm
30…44 Nm
RPS TL
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7.5.3
Variant with DC switch and terminal blocks
In this variant, you can connect up to two string groups to one inverter module.
Figure 7-29: Connection with DC switch and terminal blocks
•
Connection is done to terminal blocks.
•
For strain relief, fix cable to cable clamping rail.
DC connection
Connecting specifications
inflexible least
inflexible max.
flexible least
flexible max.
flexible with ferrule without plastic sleeve at least
flexible with ferrule without plastic sleeve max.
flexible with ferrule with plastic sleeve at least
flexible with ferrule with plastic sleeve max.
Wire cross section,
Wire cross section,
Wire cross section,
Wire cross section,
Wire cross section,
Wire cross section,
Wire cross section,
Wire cross section,
Type of connection
Tightening torque min.
Tightening torque max.
7.6
70 mm2
240 mm2
70 mm2
240 mm2
70 mm2
185 mm2
50 mm2
185 mm2
Screw connection
25 Nm
30 Nm
Connection to DC distributor
In this variant, you can connect up to 16 string groups to one inverter module. Connection is done to fuse
holders.
The DC distributor is obligatory in the case of the Master-Slave application, but can also be used in the case
of the Multiple String application. In the case of the Multiple String application, unlike in Master-Slave, the
string groups are not connected to a busbar but to the individual inverter modules.
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Figure 7-30: Connection of DC distributor
DC distributor
1
Fuse holder for generator connection
1A
Fuse holder for generator connection plus
1B
Fuse holder for generator connection minus
The rated fuse current depends on the cable size used by the customer.
The fuses are not included in scope of supply.
DC connection
Technical data
Size
Rated voltage
Fixture
Tightening torque
Rated current
NH 1
1000 V DC
Bolt M10 x 40
32 Nm
50 A, 63 A, 80 A, 100 A, 125 A, 160 A, 200 A
•
Remove the acrylic glass cover installed in front of the terminals.
•
Connect the positive pole and the negative pole of the PV field to the terminals. Use tubular cable lugs.
•
For strain relief, fix cable to cable clamping rail.
•
Fix acrylic glass again.
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8
8.1
Operation
Special safety instructions
DANGER
Live components - Risk of electric shock!
•
When shutting down the plant, note that an active power source is connected. Depending on the operating status, voltage from the PV generator or the solar inverter may be
present.
82
•
The control switch is no disconnecting device. By turning the solar inverter off via the
control switch, the solar inverter is not disconnected from power supply of the PV field.
For full disconnection, all main switches and external disconnecting devices must be
opened.
•
High DC voltages (without zero transition) can cause light arcs and damage components
in case of malfunctions, improper installation or improper handling of plug contacts and
fuses.
•
The short-circuit current of the PV field depends on the insolation and only slightly higher
than the maximum operating current. Short circuits in the plant will not always result in
disconnection by fuses.
•
The non-grounded IT grid of the PV field may be grounded unintentionally in case of a
defect. Occurrence of another defect can cause a short circuit.
•
For easy disconnection of PV field in case of a defect, e.g. short circuit, install additional
external DC isolating devices for each input close to the solar inverter.
•
Before connection, check the cables for any damage. Replace any defective cables.
•
Note the warning signs.
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8.2
Control elements
8.2.1
Inverter module
Figure 8-1: Control elements
Control elements
1
Control unit KP500, parameterization and display device for:
- Setting of parameters for operating behavior
- Display of measured values
- Error diagnosis
2
Illuminated selector switch "Start/Stop" (green=run signal)
3
Illuminated "Reset" button (red=error)
4
DC switch (only in connection variants 6B and 6C, see Figure 5-8)
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8.2.2
AC distributor
Figure 8-2: AC distributor control elements
Control elements
1
84
AC main switch
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8.3
Control unit KP500
A
B
C
F
D
E
G
J
Figure 8-3: Control unit
A
J
B
C
D
E
F
G
Buttons
Acknowledge fault.
Acknowledge fault.
Navigate in menu structure and select parameters.
Increasing or reducing parameter values.
ENT
Open parameters or switch within the menu structure.
Confirm the selected function or parameter.
ESC
Used for aborting parameters or switching back to the previous menu within the menu
structure. Canceling the function or resetting the parameter value.
FUN , ▲ (pressed one after the other): Display of last parameter (highest number),
FUN
FUN , ▼ (pressed one after the other): Display of first parameter (lowest number).
Display
Three-digit 7-segment display to show the parameter number.
One-digit 7-segment display, e.g. display of the active data set.
Display selected menu branch:
VAL
Show actual values.
PARA
Select parameters and adjust parameter values.
CTRL
No function.
CPY
Copy parameters via the control unit:
ALL
All the parameter values are copied.
Act
Active parameter values are copied only.
FOr
Control unit memory is formatted and deleted.
Status and operating messages:
WARN Warning about a critical operating behavior.
FAULT Message indicating that the unit was switched off due to a fault.
RUN
Flashing: signals readiness for operation.
Lights up: signals that the unit is operating and the output stage is enabled.
REM
Active remote control via interface connection.
F
Function switch-over with the FUN key.
Five-digit 7-segment display for display of parameter value and sign.
Physical unit of the parameter value displayed.
RUN
STOP
▲ ▼
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8.3.1
Menu structure
Menu branch – VAL
Display of actual values.
Menu branch – PARA
Display and edit parameters.
Menu branch – CPY
Copy parameters.
Menu branch – CTRL
No function.
Figure 8-4: Menu Structure
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8.4
First commissioning
Before first commissioning after connection of the solar inverter, the following must be checked/carried out:
•
Electrical installation was carried out according to chapter 7 "Electrical connections" and the supplied
circuit diagrams.
•
The AC main switch on the door of the AC distributor is turned off.
•
The control switch of all inverter modules is in "Stop" position".
•
All fuses and circuit breakers are switched on.
•
Rated values for mains voltage and mains frequency are kept. See chapter 4 "Technical data".
•
The maximum values for DC input voltage and DC input current are kept. See chapter 4 "Technical data".
•
The poles of the PV field are connected to the correct poles of the DC connection in the inverter module.
Positive and negative pole are not exchanged.
•
In an insulation test, it was verified that the PV field does not have an earth fault. The measurements of
the insulation resistance between the positive pole of the PV generator and PE as well as between the
negative pole of the PV generator and PE must result in a value > 30 kΩ.
NOTE
The plant is equipped with overvoltage protection devices. For insulation measurements, unplug connectors and/or disconnect protection devices.
•
The inverter module is connected to the equipotential bonding system at the place of installation or in
the equipment room.
•
All cables are connected to the terminals. The screws of the terminals must be checked for tight fit.
•
After transport from a cold environment to an equipment room, condensation water can form. Before
commissioning, the plant must be dry.
•
There may be no objects on the plant, e.g. tools.
•
Close the doors of the plant.
•
Close external disconnecting devices.
8.5
Commissioning
8.5.1
Start
NOTE
Damaging of solar inverter
•
The DC voltage must not exceed the maximum input voltage of 900 V (1000V optional).
The solar inverter may be damaged.
•
In any case, follow the right order when switching the solar inverter on.
1. Close all doors of the RPS.
2. Turn AC main switch of AC distributor on (see Figure 5-4, item 1).
3. Close the disconnecting devices of all inverter modules (see Figure 5-8, items 1 and 6A, 6B and 6C).
4. Adjust the starting and stopping behavior according to the technical data of the PV generator (see chapter 9.4 "Operating behavior").
5. Turn the control switches of all inverter modules to "Start" (see Figure 5-7: Inverter module, outside
view, item 2).
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If an error is displayed on the control unit after start of the inverter, correct the error following the instructions in chapter 11.2 "Error messages".
If the DC disconnecting device (or, if installed, the DC main switch) is switched on before the
AC main switch is closed, the error F0405 "Grid failure" is displayed.
If the inverter works properly, the green signal lamp in the plant door will be on and the control unit, in default settings) will display the parameter Active power 213.
Additional actual values can be displayed on the control unit. The actual value parameters are described in
chapter 9.19 "Mains actual values".
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8.6
Measuring the DC and AC voltage
For measurement of the DC voltage and AC mains voltage, measurement terminals are provided in the
plant, each of these terminals is fuse-protected (6A).
-
Measurement terminals X01 for DC voltage, X01.1 = +, X01.2 = –
-
Measurement terminal X1.1 for AC mains voltage
Figure 8-5: DC and AC measurement terminals
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8.7
8.7.1
Decommissioning
Stopping
DANGER
Live components - Risk of electric shock!
Even with main switches switched off, dangerous voltage is present in the solar inverter.
•
When shutting down the plant, note that an active power source is connected. Depending on the operating status, voltage from the PV generator or the solar inverter may be
present.
•
The control switch is no disconnecting device. By turning the plant off via the control
switch, the solar inverter is not disconnected from power supply of the PV field. For full
disconnection, all main switches and external disconnecting devices must be opened.
If you must shut the plant down, follow the following instructions:
NOTE
Damaging of solar inverter
If you must shut the solar inverter down, follow the following instructions:
•
Only actuate the main switches without load.
•
In any case, follow the right order when switching the solar inverter off.
Only actuate the disconnecting devices without load. Before turning off the disconnecting device, turn off the
inverter modules via the control switches on the plant doors of the inverter modules ("Stop" position).
1. Turn the plant off via the control switch ("Stop" position).
2. Switch DC disconnecting device off.
3. Switch AC main switch off.
Doors can only be opened with the main switches turned off.
CAUTION
Danger of burns due to hot surfaces!
Even some time after shutdown of the solar inverter, certain components, e.g. heat sink, fuse,
sine filter may have a high temperature.
•
8.8
Do not touch the surfaces directly after shutdown. Wear safety gloves where necessary.
Emergency shutdown
1. Turn the solar inverter off via the control switch ("Stop" position).
2. Switch DC main switch off.
3. Switch AC main switch off.
4. Disconnect the solar inverter from the PV generator and the grid (switch off external disconnecting devices).
5. Secure external disconnecting devices to prevent restarting.
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8.9
Final decommissioning/disassembly/disposal/recycling
When it comes to final decommissioning/disposal of the solar inverter, individual components
and/or auxiliary and operating materials, ensure that all parts/materials are disposed of in an
environmentally compatible manner.
Ensure that all metal and plastic parts are recycled.
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9
Parameterization
NOTE
• The solar inverters were parameterized in the factory such that configuration by the
customer is not required.
•
If a data logger is used, the Node-ID and the bus termination must be parameterized.
As an alternative to the control unit, you can also use the optional PC user software VPlus for parameterization, monitoring and maintenance of the solar inverter.
The parameters are divided in 3 control levels.
The parameter Control level 28 defines the relevant control level.
-
Control level 1 provides inverter information, actual values, an error list and contains parameters with
which the operating behavior can be influenced.
-
Control level 2 contains additional parameters, actual values and functions.
-
Control level 3 contains additional error information, functions and actual values. Additionally, it enables
fundamental changes of the operating behavior. Setting of parameters in this control level is not required and will not be fully covered by this user manual.
No.
28
9.1
Parameter
Description
Control level
Min.
1
Max.
3
Setting
Factory setting
1
Control level
1
Selecting the language
With parameter Language 33, you can set the language in control level 1. The error messages and the
loaded parameters (if PC user software is used) are displayed in the selected language.
No.
Parameter
Description
33
Language
9.2
Setting
0 - German
1 - English
2 - Italian
3 - Spanish
Setting
Factory setting
Control level
1
1
Set password
As a protection against unauthorized access, the parameter Set password 27 can be set such that anyone
who wants to change parameters must enter this password. A change of parameter is only possible if the
password in entered correctly.
To deactivate password protection, enter "0" in parameter 27.
No.
27
92
Parameter
Description
Set password
Min.
0
Max.
999
RPS TL
Setting
Factory setting
0
Control level
1
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9.3
Display parameters
In menu PARA of the control unit, several actual values and statuses are available in addition to various
parameters.
The available display parameters can be read via the control unit or the PC user software. Write access is
only possible via parameter User name 29.
9.3.1
Inverter data
The serial number can be read via parameter Serial number 0.
9.3.2
Installed optional modules
Via parameter Optional modules 1, you can find out which optional modules are installed in the frequency
inverter, e.g. Extension Module EM or Communication Module CM.
9.3.3
Software version
Via parameter Inverter software version 12, you can check the version number of the frequency inverter
software.
9.4
Operating behavior
As described in chapter 5.4 "Function", the monitoring provisions are turned on as soon as the DC input
voltage exceeds a value of 300 V. The plant behavior at sunrise and at dawn can be configured.
9.4.1
Multiple String
In the case of the Multiple-String application, all inverter modules work independently. In the case of identical sub-generators, all inverter modules start operation almost simultaneously and are also disconnected
from the supply grid almost at the same time. Setup must be performed for each inverter module at the
same time.
9.4.1.1 Startup behavior
The plant must be enabled by means of the "Start/Stop" control switch and no error may be present.
The main contactor is turned on as soon as the DC input voltage exceeds the value V DC Start 830.
A sufficiently high start voltage must be used to avoid frequent activation and deactivation in the case of low
irradiation in the morning and evening. The value should not be too high to ensure that the plant can also
be turned on in the case of high module temperatures and the resulting low DC voltage.
Parameter
Description
No.
830
V DC Start
Min.
Max.
450,0 V
800,0 V
Setting
Factory setting
Depending on
min. UMPP
Control level
1
9.4.1.2 Shutdown behavior
When insolation gets weaker, the power produced by the PV field drops. In order to prevent tapping power
from the 3-phase grid, the main contactor is to drop out as soon as the power produced by the PV field is no
longer sufficient to cover the solar inverter losses. To that end, the AC power, DC power and DC input voltage are monitored during operation.
If the DC input voltage is lower than the reference value set with U DC shutdown limit 837, feed-in operation is stopped.
Feed-in operation is also stopped if the power drops below the following adjustable reference values:
-
P switch off limit AC 838 for AC power and
-
P switch off limit DC 834 for DC power.
The power shutdown limits can be deactivated by entering 0.0. . In this case, the DC voltage is the only
shutdown criterion.
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The optimum shutdown point can be determined more precisely via the DC power. For this reason Switch-off
limit AC 838 = 0.0 should be turned off.
In order to prevent actuation of the main contactor during short power drops, you can set up a shut down
delay via parameter Off time 839. The power must drop below the limits set via parameters 834, 837 or
838 for this time before operation is stopped. Restarting can be delayed by an adjustable time via the Turn
on delay time 840.
No.
834
Parameter
Description
P switch off limit DC
Min
0,00 kW
Max.
20.00 kW
837
V DC switch off limit
405,0 V
650,0 V
838
839
840
P switch off limit AC
Off time
Turn on delay
0,00 KW
1 min
1 min
20.00 kW
20 min
30 min
9.4.2
Master-Slave
Setting
Factory setting
1,00 kW
Depending on
min. UMPP
1,00 kW
5 min
10 min
Control level
2
1
2
2
2
In the case of the Master-Slave application, the master performs the MPP control of the plant. The slaves are
activated/deactivated by the master in steps, depending on the available power. The startup and shutdown
behavior can only be parameterized on the master inverter module. The behavior set on the slave inverter
modules does not have any effect.
9.4.2.1 Startup behavior
The plant must be enabled by means of the "Start/Stop" control switch and no error may be present.
As soon as the DC voltage exceeds the set start voltage value V DC Start 830, the master inverter module
is connected to the supply grid, all other inverter modules (slaves) remain disconnected from the grid in
standby mode.
A sufficiently high start voltage must be used to avoid frequent activation and deactivation in the case of low
irradiation in the morning and evening. The value should not be too high to ensure that the plant can also
be turned on in the case of high module temperatures and the resulting low DC voltage.
Depending on the available DC power the slave inverter modules are activated/deactivated.. The current DC
total power can be viewed via actual value parameter PDC total power 1148. The power levels at which a
slave inverter module is connected can be configured via parameters Start1 1136, Start2 1138, Start3
1140, with the number following the parameter ID representing the number of the slave.
In order to prevent actuation of the main contactor of the slave inverter modules during short power peaks,
you can set up a minimum activation time of the slave inverter modules via parameter Hysteresis time
1099. The time should be smaller than the Off time 839 of the master inverter module in order to ensure
that the slave inverter modules are shut down before the master inverter module. Activation is only effected
if PDC total power 1148 drops below the shutdown point for the configured time.
No.
Parameter
Description
830
V DC Start
1099
1136
1138
1140
Hysteresis time
Start1
Start2
Start3
Setting
Min
Max.
Factory setting
Depending on
450,0 V
800,0 V
min. UMPP
60 s
65000s
300 s
Depending on inverter module
Depending on inverter module
Depending on inverter module
Control level
1
3
3
3
3
The power values of the activation points defined for the slave inverter modules depend on the rated power
(Pn) of the inverter modules used. For the factory settings of the activation points, refer to the table below.
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No.
1136 Start1
1138 Start2
1148 Start3
Parameter
Description
Min.
50% * Pn
150% * Pn
250% * Pn
Setting
Max.
100% * Pn
200% * Pn
300% * Pn
Factory setting
80% * Pn
180% * Pn
280% * Pn
9.4.2.2 Shutdown behavior
When insolation gets weaker, the slave inverter modules are disconnected from the supply grid in steps,
depending on the available DC power.
The current DC total power can be viewed via actual value parameter PDC total power 1148. The power
levels at which a slave inverter module is disconnected can be configured via parameters Stop1 1137, Stop2
1139, Stop3 1141, with the number following the parameter ID representing the number of the slave.
In order to prevent actuation and deactivation of slave inverter modules during significant insolation variations, you can set up a minimum activation time of the slave inverter modules via parameter Hysteresis time
1099. The time should be smaller than the Shutdown time 839 of the master inverter module in order to
ensure that the slave inverter modules are shut down before the master inverter module. Deactivation of the
slave inverter modules is done if PDC total power 1148 drops below the shutdown point for a configured
time.
The master inverter module stops operation as soon as the DC input voltage drops below the reference value set in parameter V DC Switch Off Limit 837.
Feed-in operation is also stopped if the power drops below the following adjustable reference values:
-
P Switch Off Limit AC 838 for AC power and
-
P Switch Off Limit DC 834 for DC power.
The power shutdown limits can be deactivated by entering 0.0. In this case, the DC voltage is the only shutdown criterion.
The optimum shutdown point can be determined more precisely via the DC power. For this reason Switch
Off Limit AC 838 = 0.0 should be turned off.
In order to prevent actuation of the main contactor during short power drops, you can set up a shut down
delay via parameter Off time 839. The power at the master inverter module must drop below at least one of
the limits set via parameters 834, 837 or 838 for this time before operation is stopped. Restarting can be
delayed by an adjustable time via the Turn On delay Time 840.
No.
834
Parameter
Description
P Switch Off Limit DC
837
V DC Switch Off Limit
838
839
840
1099
1137
1139
1141
P Switch Off Limit AC
Off Time
Turn On Delay Time
Hysteresis time
Stop1
Stop2
Stop3
Setting
Factory setting
1,00 kW
Depending on
405,0 V
650,0 V
min. UMPP
0,00 KW
20.00 kW
1,00 kW
1 min
20 min
5 min
1 min
30 min
10 min
60 s
65000 s
300 s
Depending on inverter module
Depending on inverter module
Depending on inverter module
Min
0,00 kW
Max.
20.00 kW
Control level
2
1
2
2
2
3
3
3
3
The power values of the shutdown points defined for the slave inverter modules depend on the rated power
(Pn) of the inverter modules used. For the factory settings of the shutdown points, refer to the table below.
Parameter
No.
Description
1137 Stop1
1139 Stop2
1141 Stop3
08/2010
Setting
Min.
50% * Pn
150% * Pn
250% * Pn
Max.
100% * Pn
200% * Pn
300% * Pn
RPS TL
Factory setting
70% * Pn
170% * Pn
270% * Pn
95
9.4.2.3 Operating behavior of the system
Based on an example, the operating behavior of an RPS with a total power of 680 kWp, consisting of four
inverter module (each with 170kWp) is to be explained.
P
680 kW
510 kW
4
340 kW
5
3
170 kW
6
2
7
1
7:00
8
10:00
Figure 9-1: Operating behavior Master-Slave
13:00
16:00
19:00
t
1. Master inverter module starts operation.
The current DC link voltage 222 is higher than the configured start voltage U DC Start 830.
2. Slave inverter module 1 starts operation.
The actual value PDC total power 1148 is higher than the configured activation point Start1 1136, 136kW.
3. Slave inverter module 2 starts operation.
The actual value PDC total power 1148 is higher than the configured activation point Start2 1138, 306kW.
4. Slave inverter module 3 starts operation.
The actual value PDC total power 1148 is higher than the configured activation point Start3 1140, 476kW.
5. Slave inverter module 3 stops operation.
The actual value PDC total power 1148 is lower than the configured shutdown point Stop3 1141, 306kW.
6. Slave inverter module 2 stops operation.
The actual value PDC total power 1148 is lower than the configured shutdown point Stop2 1139, 289kW.
7) Slave inverter module 1 stops operation.
The actual value PDC total power 1148 is lower than the configured shutdown point Stop1 1137, 119kW.
8) Master inverter module stops operation.
The power dropped below at least one of the limits set with parameters P Switch Off Limit DC 834, V DC
Switch Off Limit 837 or P Switch Off Limit AC 838 .
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9.5
Operating statuses
Switch-on behaviour
Switch-off behaviour
Standby
Turn On Delay Time 840
Enabled by
control switch?
no
Main Contactor off
ja
Stop feed
Initialisation
Udc >
no
U DC Start 830 ?
For at least the Off Time 839
the power of voltage falls below:
- P Switch off Limit DC 834
- P Switch off Limit AC 838
- U DC Switch off Limit 837
ja
no
Power estimate
Udc > U ZKmin - U DC Switch off
yes
no
distance
Off Time 839
ja
exeeded?
Start of timer
for Off Time 839
yes
yes
no
Main Contactor on
Pdc < P shutdown limit DC 834 ? or
Pac < P shutdown limit AC 838 ? or
Udc < U DC shutdown limit 837 ?
Wait 6 s
Reset Off Time
Start feed
MPP Tracking
Actual value
Udc: DC-link voltage 222
UZKmin: min. DC-link voltage
Actual value
Pdc: DC Power 855
Pac: Active power 213
In the case of an error, feed-in is stopped and the error is displayed on the control unit.
The operating behavior can be set up separately for each inverter module.
The operating statuses shown here apply to inverter modules of the Multiple String application and the master inverter module of the Master-Slave application. The slave inverter modules are started and stopped
according to the description in chapter 9.4.2 “Master-Slave”.
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9.6
Voltage controller
NOTE
Damaging of solar inverter
•
The voltage controller may only be set up by qualified staff. Wrong setup can result in
plant parts being damaged.
The following characteristics of a PV module show the DC output current (module current) as a function of
the DC voltage (module voltage). Since the current remains fairly constant at first and drops in the area of
the graph with higher voltage, there is a maximum power operating point. The operating point at which the
modules produce maximum power is also referred to as MPP (Maximum Power Point).
By proper setting of the DC voltage it is tried to operate the PV modules at MPP. The DC voltage is adjusted
by means of the solar inverter.
If insolation changes or the temperature of the PV modules changes, the DC voltage at which power output
is at its maximum will also change.
Module current [A]
Module current [A]
Cell temperature: 25 °C
20 °C
30 °C
40 °C
50 °C
60 °C
Solar radiation:
1000 W/m²
Module voltage [V]
Module current [A]
w
Po
tic
ris
e
t
ac
ar
h
c
Module voltage [V]
600 W/m
2
400 W/m
2
200 W/m
2
Module voltage [V]
Module power [W]
MPP
ge
2
MPP
PMPP
Current-voltage-characteristic
ta
ol
v
er
800 W/m
2
Figure 9-3: I=f(U), cell temp. const.
Figure 9-2: I=f(U), insolation const.
IMPP
1000 W/m
UMPP
Figure 9-4: I=f(U), P=f(U)
The solar inverter contains a voltage controller which sets the DC voltage automatically such that the modules are operated at MPP.
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9.7
Power limitation
Parameters Max. output current 803 and Max. active power 812 are used for power limitation. The smaller
of the two values is used. The max. current or power which may be fed to the grid are entered. If the output value or current reach the adjusted value in strong insolation, MPP control is deactivated. The operating
point is changed such the limits set with parameters Max. output current 803 and Max. active power 812
are not exceeded. MPP is activated again if the values drop below the configured limits.
Parameter
No.
Description
803 Max. output current
812 Max. active power
9.8
Min.
Setting
Max.
Factory setting
depending on type
depending on type
Control level
2
2
Communication interface for system monitoring
The serial interface RS485 is used for data exchange between inverter modules and periphery equipment. It
can be used for connecting a data logger RPSlog1000 or another system for monitoring, control and data
acquisition.
9.8.1
Setting the Baud Rate
The transmission speed of the RS485 bus is set via parameter Baud rate 10.
The transmission speed depends on various application-specific parameters. For example, the cable length
limits the transmission speed due to signal propagation delays. With the additional "repeater" assemblies,
the max. cable length can be increased.
Parameter
Description
No.
10
Setting
Factory setting
Baud rate
Baud rate 10
5 - 57600 Baud
Function
max. line length
1 – 2400 Baud
Transmission rate 2400 Baud
2400 m
2 – 4800 Baud
Transmission rate 4800 Baud
2400 m
3 – 9600 Baud
Transmission rate 9600 Baud
1200 m
4 – 19200 Baud
Transmission rate 19200 Baud
1200 m
5 – 57600 Baud
Transmission rate 57600 Baud
600 m
6 – 115200 Baud
Transmission rate 115200 Baud
300 m
All bus clients must be set to the same baud rate.
Baud rate changes are only active after a reset of the frequency inverter via the software or
Mains Off/On.
In the case of the software reset, proceed as follows:
•
Via the control unit KP500, open parameter Program 34
•
Set parameter value "123".
•
Confirm by pressing "ENT".
After the reset, the frequency inverter is initialized and is ready for operation after a few
seconds.
9.8.2
Set up node addresses
The node address is set via parameter RS232/RS485 NodeID 394. Up to 30 inverter modules can be used
at the RS485 bus. The frequency inverters are assigned unambiguous addresses in the range from 1 to 30.
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Parameter
No.
394
Setting
Description
RS232/RS485 NodeID
Min.
Max.
Factory setting
1
30
1
For operation with the RS485 bus, each client must be assigned an address.
Bus addresses may only be assigned once, i.e. no double assignments. Identical NodeIDs
result in a communication fault!
An address change is effective immediately, i.e. without a restart of the frequency inverter.
When using a data logger RPSlog1000, note that not more than 20 inverter modules may be
connected to it.
9.8.3
Protocol
The VABus protocol is the standard protocol of BONFIGLIOLI VECTRON. It defines and describes the communication via the serial interfaces RS232/RS485. When they leave the factory, the frequency inverters are
set to VABus protocol. Communication with the data logger RPSlog1000 is only possible via the VABus protocol. If data capturing and monitoring is to be realized by means of an external product, other protocol types
can be used for this. The protocol types are described in detail in the communication module user manual.
Via parameter Protocol 395 you can view and set the protocol type:
Parameter
Description
No.
395
Setting
Factory setting
Protocol
Protocol type 395
0 - VABus
0 - VABus
Function
BONFIGLIOLI VECTRON Standard protocol (default setting)
1 - P Bus
User-specific bus protocol
2 - Modbus- RTU
Please refer to the Modbus user manual.
Changes of the parameter Protocol type 395 take effect immediately, i.e. without a restart of
the frequency inverter.
If the wrong protocol is selected, communication via CM-232/CM-485 is not possible.
In this case correct the protocol type using the control unit KP500.
9.9
Feed-in management
According to the law on renewable energy (EEG), operators of PV plants are obliged to equip plants with a
power output of 100 kW with technical and operational provision for remote-controlled reduction of the
feed-in power in the case of mains overload and for retrieving the current actual feed-in power.
As regards the active power output, a distinction is made between power limitation by an external setpoint
and power limitation by mains overfrequency.
9.9.1
Power limitation by setpoint
In Power reduction mode 1025, you can specify an external source for power reduction. The power reduction through Max. active power 812 is maintained in all operating modes. This also applies in the case of
indirect power reduction through Max. output current 803 and Max. feedback current 805.
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Parameter
No.
Description
1025
Power reduction mode
Setting
Factory setting
Setting
0 – OFF
1 – Reduction via RS232/485
2 – Reduction via system bus
Control level
1
3
If you select 0="Off", there will not be any additional power reduction.
If you select 1="Reduction via RS232/485", there will be additional power reduction. The setpoint for reduction is specified in % via Power reduction reference value 1020 and refers to the AC Nominal power 1096.
The data logger RPSlog1000 PM is connected directly with the ripple control transmitter of the utility company and transmits the current power reduction to the solar inverter while reading the solar inverter data. For
more information, refer to the RPSlog1000 PM user manual.
If you select 2="Setpoint via system bus", there will be additional power reduction. The setpoint for reduction is specified in % via S. power reduction systembus 1027 and refers to the AC Nominal power 1096.
Via Power reduction timeout 1026, you can configure the time which may pass between two write accesses
to parameter Power reduction reference value 1020 before the solar inverter resets the internal setpoint to
100 % automatically.
No.
1020
Parameter
Description
Power reduction reference
value
1026
Power reduction timeout
1027
S. power reduction systembus
Min.
Max.
Setting
Factory setting
0%
100%
100 %
3
0
min
1000 min
0 min
3
66-Reference percentage
3
Selection
Control level
In case of a power reduction ordered by the feed-in management system, the Feed-in power management
power reduction warning is set.
For setting of the warning, the following conditions must be met.
- the required power defined by the feed-in management is lower than the Max. active power 812
the solar inverter could feed more power into the grid than the set power of the feed-in management.
9.9.2
Power limitation in case of overfrequency
Since there may be different requirements by utility companies, particularly in different European countries
and the US, the frequency limits and the power gradient can be parameterized.
Via Power reduction at upper frequency limit 1030, the operation mode for power limitation in the case of
overfrequency is set.
No.
1030
Parameter
Description
Power reduction at upper frequency limit
Setting
0 – OFF
1 – ON
Setting
Factory setting
Control level
1
3
In operation mode 0="Off", power limitation in case of overfrequency is deactivated.
In operation mode 1="ON", power will be reduced if the current frequency exceeds the parameter for Frequency start power reduction 1034. Power reduction is effected based on the Gradient for power reduction
1036 in %/Hz. The current power is frozen as the rated value for further power reduction. If the mains
frequency drops below the power increase frequency 1035, power reduction will be stopped.
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No.
1034
1035
1036
9.10
Parameter
Description
Frequency start power
reduction
Frequency stop power
reduction
Gradient for power reduction
Min.
Max.
Setting
Factory setting
Control level
35,00 Hz
70,00 Hz
50,20 Hz
3
35,00 Hz
70,00 Hz
50,05 Hz.
3
5,00
50,00
20,00
3
Mains frequency monitoring
Via Mode lower-/upper frequency monitoring 1029, you can set the operation mode for internal overfrequency and underfrequency monitoring. In operation mode 0="Off", mains frequency monitoring is deactivated. In operation mode 1="On" the mains frequency is monitored for under/overfrequency (Parameters
1032 and 1033).
No.
1029
Parameter
Description
Mode lower-/upper frequency
monitoring
Setting
0 - OFF
1 - ON
Setting
Factory setting
Control level
1
3
If the current mains frequency drops below the set frequency threshold for Lower frequency limit 1032, the
solar inverter is disconnected from the grid, and error message F0421=Mains underfrequency is displayed.
If the current mains frequency exceeds the set frequency threshold for Upper frequency limit 1033, the
solar inverter is disconnected from the grid, and error message F0421=Mains overfrequency is displayed.
No.
1031
1032
1033
9.11
Parameter
Description
Rated mains frequency
Lower frequency limit
Upper frequency limit
Min.
35,00 Hz
30,00 Hz
30,00 Hz
Max.
65,00 Hz
70,00 Hz
70,00 Hz
Setting
Factory setting
50,00 Hz
47,50 Hz.
51,50 Hz
Control level
3
3
3
System synchronization
For the grid-coupled solar inverters of the RPS TL series of devices, it is necessary for the applications
-
Multiple String
-
Master-Slave
to synchronize the PWM units of the inverter modules. Synchronization of the inverter modules is done via
the system bus.
For synchronization, a synchronization master and at least one synchronization slave is needed. The terms
synchronizations master and synchronizations slave are only relevant to the synchronization function and
must not be confused with the terms MPP master and MPP slave used for the Master-Slave application.
Wiring of the system bus and setup of the termination resistances is to be done according to chapter7
"Electrical connections". Proper and EMC compliant installation must be ensured.
Optimum synchronization should be achieved with the factory settings. The parameter should only be
changed by experienced system bus users.
In this chapter, only the parameters relevant to synchronization will be described, you will find a detailed
description of the system bus in separate documentation.
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9.11.1
Node address
For proper identification, each inverter module is assigned a Node ID which must be unique in the system.
The setting of the system bus node ID is done via the parameter Node-ID 900.
By setting Node-ID 900 = -1, the system bus can be deactivated for the inverter module. If Node-ID 900
= 0 is set, the inverter module is defined as a master. Only one frequency inverter on the system bus may
be defined as a master.
Parameter
No.
900
Description
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
Node-ID
9.11.2
Setting
Factory setting
0
1
x
Control level
3
3
3
Baud rate
The Baud rate setting must be the same in all clients. The maximum Baud rate depends on the necessary
total cable length of the system bus. The Baud rate is set up via parameter Baud rate 903, thus defining the
available cable length.
3
4
5
6
7
8
Operation mode
to 50 kBaud
to 100 kBaud
to 125 kBaud
to 250 kBaud
to 500 kBaud
to 1000 kBaud
Transmission
Transmission
Transmission
Transmission
Transmission
Transmission
Function
rate 50 kBaud
rate 100 kBaud
rate 125 kBaud
rate 250 kBaud
rate 500 kBaud
rate 1000 kBaud
Parameter
No.
903
Description
Baud rate
9.11.3
Inverter module
Synchronization master
Synchronization slaves
max. line length
1000 meters
800 meters
500 meters
250 meters
100 meters
25 meters
Setting
Factory setting
8 to 1000kBit/s
Control level
3
3
Identifier
The identifier of the SYNC telegram must be set identically in all clients on the system bus. The setting of
the identifier of the SYNC telegram is done via parameter SYNC-Identifier 918. The identifier range
129...191 may not be used as the emergency telegrams can be found there. It is recommended to use the
identifier 128.
Parameter
No.
Description
918 SYNC identifier
Min.
0
Parameter
No.
918
Description
SYNC identifier
08/2010
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
RPS TL
Setting
Max.
2047
Setting
Factory setting
128
128
128
Factory setting
128
Control level
3
3
3
103
9.11.4
Synchronization time
The temporal cycle for the synchronization telegram is set on an inverter module defined as the system bus
master via parameter SYNC-Time 919. A setting of 0 ms for the parameter SYNC-Time 919 means "no
SYNC telegram”.
With SYNC-Time 919 you can set the time difference between the synchronization telegrams.
For optimum synchronization of the inverter modules, 1 ms should be set in the synchronization master. In
the case of the synchronization slaves, the function must be deactivated (0 ms)!
Parameter
No.
919
9.11.5
Description
SYNC-Time
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
Setting
Factory setting
1 ms
0 ms
0 ms
Control level
3
3
3
Timeout monitoring
Each inverter module monitors its received data for whether they are updated within a defined time window.
If the time difference between two SYNC telegrams is greater than the time set in SYNC Timeout 939 (e.g.
due to faults on the system bus, broken cable, etc.), the fault F2200=System bus timeout SYNC is generated.
Parameter
No.
939
Description
SYNC-Timeout
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
Setting
Factory setting
0 ms
100 ms
100 ms
Control level
3
3
3
Setting 0 for this function means that there is no timeout monitoring and must be deactivated in the case of
the synchronization master.
9.11.6
Synchronization operation mode
With Operation mode 1180, the synchronization is activated by selection of the synchronization channel.
In the case of the synchronization slaves, 10=SYNC must be selected, in the case of the synchronizations
slaves, the operation mode is deactivated.
Parameter
No.
1180
104
Description
Operation mode
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
RPS TL
Setting
Factory setting
0 - OFF
10 - SYNC
10 - SYNC
Control level
3
3
3
08/2010
9.11.7
Master-Slave operation mode
With Master/Slave operation mode 1091, the inverter modules are defined either as the synchronization
master or a synchronization slave. In the case of the Multiple String application, all inverters are set up as
masters. In the Master-Slave application, the slave inverter modules must be set to the corresponding slave
Node-ID.
0
1
2
3
4
5
6
7
8
Operation mode
- OFF
- Master
- Slave_Adr1
- Slave_Adr2
- Slave_Adr3
- Slave_Adr4
- Slave_Adr5
- Slave_Adr6
- Slave_Adr7
Function
Synchronization deactivated
Operation as Master
Operation as slave with address 1
Operation as slave with address 2
Operation as slave with address 3
Operation as slave with address 4
Operation as slave with address 5
Operation as slave with address 6
Operation as slave with address 7
Multiple String application
Parameter
No.
Description
1091
Master/Slave operation
mode
Inverter module
Synchronization master
Synchronization slave 1
Synchronization slave x
Master-Slave application
Parameter
No.
1091
9.12
Description
Master/Slave operation
mode
Setting
Factory setting
1 - Master
1 - Master
1 - Master
Control level
3
3
3
Setting
Inverter module
Factory setting
Control level
Synchronization master
Synchronization slave 1
Synchronization slave x
1 - Master
2- Slave_Adr1
x- Slave_Adrx
3
3
3
Master-Slave configuration
9.12.1
Function
In the Master-Slave function in the solar inverters of the RPS TL series, all inverter modules are networked in
the DC link. The individual string groups of the solar generator are connected to the common DC link.
In the Master-Slave application, the inverter modules are always operated at their optimum efficiency. The
number of slave inverter modules turned on is always adjusted to the available generator power; thus the
service life of the slave inverter modules is increased.
08/2010
RPS TL
105
9.12.2
Preconditions for Master-Slave
In order to be able to use the Master/Slave application, the following preconditions must be met:
- All inverter modules must be DC-link networked in the DC distributor (see chapter 7.2.7 "Connection of
Multiple String DC distributor" and 7.2.8 "Connection of Master-Slave DC distributor").
- All inverter modules must be connected via the system bus (see chapter 7.2.4 "Connection of system
bus").
- All inverter modules must be synchronized (see chapter 9.11 "System synchronization").
- The total DC current is captured in the DC distributor, the measured value must be supplied to the inverter modules (see chapter 7.2.9 "Connection of current transformer").
- Only up to four inverter modules can be operated in the Master-Slave application.
9.12.3
Master-Slave operation mode
In the Master-Slave application, only one inverter module may be configured as the master, this module
performs MPP control of the whole plant, the remaining modules must be configured as slaves. The relevant
function is assigned via parameter Master/Slave operation mode 1091.
Setting
Inverter module
Factory setting
Control level
Master
1 - Master
3
Master/Slave operation
Slave 1
2- Slave_Adr1
3
1091
mode
Slave 2
3- Slave_Adr2
3
Slave 3
4- Slave_Adr3
3
The number of inverter modules per system varies depending on the rated power of the solar inverters. In
parameter Number of power modules 1130, the number of inverter modules used is to be entered. Up to
four inverter modules can be used in the Master-Slave application. The parameter is only processed by the
Master inverter module and must only be set there. In the case of the slave inverter modules, the entry will
have no effect.
No.
No.
1130
9.12.4
Parameter
Description
Parameter
Description
Min
Max.
Number of power modules
1
4
Setting
Factory setting
Depending on
system
Control level
3
Actual current value
The total generator current is measured in the DC distributor, the value is transmitted to the inverter modules. The measured value transmitted to the inverter modules is a voltage value, the transformation ratio of
the current measurement depends on the system used. The transformation ratio can be set via parameter
DC Current Transformer Ratio MPP controller 1135.
No.
1135
9.12.5
Parameter
Description
DC Current Transformer
Ratio MPP controller
Min
Max.
9.3 A/V
200,0 A/V
Setting
Factory setting
Depending on
system
Control level
3
Release of slave inverter modules
The activation of the slave inverter modules is effected via the system bus by the master inverter module.
Hardware release by the control switch and absence of faults in slaves are required to enable release of the
slaves.
The source of the software release S. software release 110 for the slave inverter modules must be set to the
release of the master inverter module. The release signals for the slaves are transmitted in a word using a
multiplexer.
106
RPS TL
08/2010
Parameter
No.
Setting
Description
110 S. software release
9.12.6
Master
97 –
Start/Stop release
Slave 1
Slave 2
Slave3
516 516 FUF_Slave_DeMux FUF_Slave_DeMux
516 FUF_Slave_DeMux
Process data settings
For data exchange between the master inverter module and the slave inverter modules a total of 2 or three
PDO identifiers are needed. Two PDO identifiers are needed by the master inverter module for transmitting
the mains frequency, mains phase angle, Isq, Isd values and the release of the slave inverter modules.
The following parameter specifications for PDOs are a recommendation. Other parameter configurations are
possible, but should only be made by experienced users. All process data parameters can be reached on
control level 3. For detailed information on the system bus, refer to a separate manual on this subject.
9.12.6.1 Assignment of process data identifiers
The master inverter module uses PDO identifiers 110 and 120 for sending. This results in the following sending settings:
Parameter
No.
Setting
Description
Master
Slave 1
Slave 2
Slave3
924
RxPDO1
111
110
110
110
925
TxPDO1
110
111
112
113
926
RxPDO2
112
120
120
120
927
TxPDO2
120
0
0
0
928
RxPDO3
113
0
0
0
929
TxPDO3
130
0
0
0
All unused TxPDOx and RxPDOx are turned off with 0.
Attention!
Identifiers may only be assigned once, i.e. no double assignments.
The identifier range 129...191 may not be used as the emergency telegrams can be found there.
9.12.6.2 Process data channel operation mode
The sending/receiving behavior can be time-controlled or controlled via a SYNC telegram. The behavior can
be parameterized for each PDO channel. Tx-PDOs can work time-controlled or SYNC-controlled. Timecontrolled TxPDO sends its data at the set time intervals. A SYNC-controlled TxPDO will send its data once a
SYNC-telegram is received.
Sending of the most objects is always done after a synchronization telegram. For control reasons, sending of
the reference current values is to be effected at 1ms intervals.
Parameter
No.
Description
930 TxPDO1 Function
931 TxPDO1 Time
932 TxPDO2 Function
08/2010
Setting
Master
Slave 1
Slave 2
1 – controlled by 1 – controlled by 1 – controlled by
Time
Time
Time
Slave3
1 – controlled by
Time
1 ms
100 ms
100 ms
100 ms
2 – controlled by
SYNC
0 – not active
0 – not active
0 – not active
RPS TL
107
Operation mode
0 - Not Active
1 - Controlled by time
2 - Controlled by SYNC
Function
No data are sent
In the cycle of the adjusted time interval the data are sent
To arrival of a SYNC telegram the data are sent
All unused TxPDOx and RxPDOx are turned off with 0 – not active. The RxPDO functions must be set to 0-
controlled by time.
9.12.6.3 Process data objects
The process data channels TxPDO1 and TxPDO2 are used the master.
On the TxPDO1, the reference currents Isq and Isd as well as the slave release are handed over.
No.
Parameter
Description
950
TxPDO1 Word 1
951
952
Setting
Inverter module
Factory setting
500 - AEC_Udreg_Isq
TxPDO1 Word 2
Master
Master
TxPDO1 Word 3
Master
517 - FUF_Slave_Mux
501 - AEC_Udreg_Isd
On the TXPDO2, the mains phase position and the mains frequency are transmitted.
Parameter
No.
Description
962
TxPDO2 Word 3
963
964
TxPDO2 Word 4
TxPDO2 Long 1
Setting
Inverter module
Factory setting
Master
Master
503 - AEC Phi low
Master
504 - AEC Phi high
505 - AEC PLL mains frequency
After connection to the supply grid and synchronization, the slave inverter modules report back to the
TxPDO1.
No.
Parameter
Description
Inverter module
Factory setting
946
TxPDO1 Boolean1
Slave
184 - Flux formation complete
9.12.7
Setting
Control
In operation, various quantities must be transmitted from the master inverter module to the slave inverter
modules. This is done via the system bus.
The sources of the reference current values (active, reactive current) for the current controllers of the slave
inverter modules are set via parameters S. Isq controller 150 and S. Isd controller 152.
No.
Parameter
Description
Setting
Inverter module
Factory setting
Master
500 - AEC_Udreg_Isq
150
S. Isq controller
Slave
704 - RxPDO1 Word1
Master
501 - AEC_Udreg_Isd
152
S. Isd controller
Slave
705 - RxPDO1 Word2
Upon start of a slave inverter module, the mains frequency and the current phase angle must be transmitted
from the master inverter module to the slave inverter module. The source of the mains frequency for the
slave inverter modules is set via parameter S. Stator frequency start 1092. The phase angle is transmitted
via two quantities, the sources are entered in parameter S. Phi low start 1093 and S. Phi high start 1094.
108
RPS TL
08/2010
Parameter
Description
No.
1092
S. Stator frequency start
1093
S. Phi low start
1094
Q. Phi high start
9.12.8
Setting
Inverter module
Master
Slave
Master
Slave
Master
Slave
Factory setting
505 - AEC PLL mains frequency
718 - RxPDO2 Long1
503 - AEC Phi low
716 - RxPDO2 Word3
504 - AEC Phi high
717 - RxPDO2 Word4
Behavior of system in faults
The slave inverter modules report readiness for operation back to the master inverter module. If one slave
inverter module fails, the master inverter module activates the next slave which is ready for operation. If all
inverter modules are in operation, a faulty slave will be turned off and the total power of the system is limited to the maximum power of the remaining inverter modules. In the case of a defect or fault of the master inverter module, the whole system will fail. In this case, the problem of the master inverter module must
be repaired or the plant must be reconfigured. One of the remaining slave inverter modules can be used as
the master until the faulty module is repaired. This will prevent major power losses in the case of a prolonged failure.
9.13
Electrical cabinet fan
The electrical cabinet fans are controlled via a relay output. By default, the relay output with parameter Op.
mode digital output 3 532 is linked to function "44 - Cabinet fan". However, it can also be linked to various
other functions.
If function "44-Electrical cabinet fan" is selected for Operation mode digital output 3 532, the fans are controlled depending on the heat sink temperature and the inside temperature of the frequency inverter.
The start temperature of the electrical cabinet fan can be controlled via parameters Switching Limit Heat
Sink Temp 825 and Switching Llimit Inside Temp. 826.
The temperature value at which the electrical cabinet fans are started is calculated from the type-dependent
temperature limit minus the adjusted warning limit.
If one of the two switching temperature values is reached, the electrical cabinet fan will be switched on even
if the other switching temperature has not been reached.
By default, the parameter is set to suitable values, i.e. no change of settings required.
Parameter
No.
Description
532 Op. mode digital output 3
Setting
Factory setting
44- Electrical cabinet fan
Control level
2
If function "100-On" is selected for Operation mode digital output 3 532, the fans will be on permanently
independent of the temperature.
Parameter
Description
Switching Limit Heat Sink
825
Temp.
826 Switching limit Inside Temp.
No.
Min.
Max.
Setting
Factory setting
Control level
-35
0
-15 °C
2
-30
0
-15 °C
2
Tk: Heat sink temperature of frequency inverter Tk 255
Ti: Inside temperature of frequency inverter Ti 256
Setting of these parameters does not affect the frequency inverter fans.
08/2010
RPS TL
109
9.14
Error/warning behavior
9.14.1
Automatic acknowledgement of errors/faults
If an error has occurred, it will be acknowledged automatically after the time set with parameter Delay Au-
to-Acknowl. 836. After this, the solar inverter will restart automatically.
Parameter
Description
Delay Auto-Acknowl.
No.
836
Min.
1 min
Max.
20 min
Setting
Factory setting
5 min
Control level
2
The maximum number of errors which can be acknowledged automatically per day is set with parameter
Allowed. No. of Auto-Acknowl. 835. If a setting is made for this parameter, the set number of error acknowledgements will be available again on this day, even if one or more errors have already been acknowledged automatically.
Parameter
Description
Allowed No. of AutoAcknowl.
No.
835
Min.
Max.
Setting
Factory setting
0
20
15
Control level
2
9.14.2
Operation mode overvoltage protection
Via parameter Op. Mode overvoltage protection828, you can set up the behavior to be triggered after a
defect of a surge arrester in the DC circuit.
If a defect is recognized,
-
Warning W8000 "Overvoltage protection" is displayed in setting "1 – Warning" (default setting)
-
Error F0406 "Overvoltage protection" will be displayed and the solar inverter will be shut down in setting "2 – Error Switch-Off".
Parameter
Description
No.
Op. Mode overvoltage
protection
828
Selection
0 – Off
1 – Warning
2 – Error Switch-Off
Setting
Factory setting
Control level
1 – Warning
2
Thanks to the visual signaling at the surge arresters, you can identify the component which is defective and
must be replaced.
9.14.3
Operation mode Insulation monitoring
Via parameter Op. Mode Isolation monitoring 829, you can set how often the insulation of the PV generator
is to be checked. In setting "1 – Daily", the insulation will be checked once in the morning; if the insulation
resistance is in the permissible range, no insulation defects will be reported on this day. In setting "2 – Permanent", the insulation is monitored continuously.
In these settings, error F0404 "Isolation" will be displayed if an earth fault is identified in the PV generator.
No.
829
Parameter
Description
Op. Mode isolation
monitoring
Selection
0 – Off
1 – Daily
2 – Permanent
Setting
Factory setting
Control level
2 – Permanent
2
NOTE
•
110
If an earth fault controller is installed, monitoring will be done in a similar way.
RPS TL
08/2010
9.15
Intelligent current limits
The current limits to be set avoid inadmissible loading of the connected solar inverter and prevent an error
switch-off. The specified overload reserve of the frequency inverter can be utilized optimally using the intelligent current limits, particularly in applications with dynamic load changes. The criterion to be selected via
the parameter Operation mode 573 defines the threshold to the activation of the intelligent current limit.
The parameterized rated current of the frequency inverter is synchronized as the limit value of the intelligent
current limits.
Operation mode 573
0 - Off
Function
The function is switched off.
1 - Ixt
Limitation to the overload of the frequency inverter (Ixt).
10 - Tc
Limitation to the maximum heat sink temperature (TC).
11 - Ixt + Tc
Operation mode 1 and 10 (Ixt + TC).
The threshold value selected via the parameter Operation mode 573 is monitored by the intelligent current
limits. In the operation mode Heat sink temperature monitoring, the reduction of power selected with parameter Power limit 574 is done when the limit value has been reached. The total time of the power reduction as a result of an increased heat sink temperature contains not only the cooling time, but also the additionally defined Limitation time 575.
The definition of the power limit should be selected as small as possible in order to give the frequency inverter sufficient time to cool down. The rated power of the frequency inverter should be used as the reference.
No.
Parameter
Description
574 Power limit
575 Limitation time
Setting
Min.
Max.
Factory setting
40,00%
95,00%
80,00%
5 min
300 min
15 min
In the operation modes with overload reserve (Ixt), the output current will be reduced if the threshold is
exceeded. A distinction is made in this context between long-time and short-time overload reserve. After the
short-term overload (1s) has been used up, the output current is reduced to the long-term overload current
matching the present switching frequency. After the long-term overload current has been used up (60s), the
output current is reduced to the rated current which also depends on the switching frequency.
If the output current has already been reduced due to the fact that the long-term overload has used up, the
short-term overload is no longer available even if it has not been used up beforehand. The defined overload
reserve (Ixt) of the frequency inverter is available again after 10 minutes of operation at reduced power.
08/2010
RPS TL
111
9.16
Status
Operation of the solar inverter is monitored continuously. The parameter Solar status 1089 enables diagnosis of the inverter during operation.
The following table shows the values for Solar Status 1089.
No.
1089
State
1
2
Init
Wait for Init
3
4
5
6
8
9
10
11
12
13
14
15
16
Wait for mains management
Ready
Ready+warning
Undervoltage
Synchronization
MPP-tracking
MPP-Tracking+Warning
MPP-maximum
MPP-minimum
MPP-FastSearch
Fault
Fault+Warning
AutoQuit
9.17
No.
Solar inverter is initializing
Solar inverter is waiting for release of initialization, e.g. delay
after MPP minimum shutdown.
Solar inverter is waiting for release by grid management.
DC voltage OK but no release.
DC voltage OK but no release, a warning is reported.
DC voltage too low.
Not valid for modular system
Tracking of optimum MPP point.
Tracking of optimum MPP point, a warning is reported.
Power limitation, MPP point cannot be approached.
MPP point below shutdown threshold.
Quick MPP tracking, e.g. after grid failure
A fault has occurred
A fault has occurred, a warning is reported.
There was a fault, but the fault is no longer present and is acknowledged automatically.
Actual values of solar inverter
Description
Actual values of solar inverter
Contents
222
DC link voltage
223
Modulation
244
Working hours counter
245
Operating hours counter
Current operating hours in which Udc > 250 V.
255
Heat sink temperature
Current heat sink temperature of frequency inverter
256
Inside temperature
Current inside temperature of frequency inverter
259
Current error
Error code
269
Warnings
Warning code
1089
Solar status
Status of solar inverter, see chapter 9.16.
1148
PDC total power
Total power of system, only in Master-Slave application
112
Current voltage in DC link
Output voltage referred to input voltage,
100% = grid input voltage
Current working hours in which the output stage of the inverter was
active
RPS TL
08/2010
9.18
Actual values of frequency inverter
No.
Description
Actual values of frequency inverters
Contents
211
R.m.s. Current
Effective current of frequency inverter
212
Output Voltage
Output voltage of frequency inverter
855
DC Power
DC power
860
DC Current
Current captured via analog input 1
861
Active Current
Active current of frequency inverter
862
Reactive Current
Reactive current of frequency inverter
9.19
Mains actual values
Mains actual values
No.
Description
Contents
213
Active power
Current active power
850
Frequency
Current mains frequency
852
Power Supply Current
Mains current
853
Power Supply Voltage
Mains voltage
863
Current a
Mains current in phase A
864
Current b
Mains current in phase B
865
Current c
Mains current in phase C
866
Power Supply Voltage a
Mains voltage in phase A
867
Power Supply Voltage b
Mains voltage in phase B
868
Power Supply Voltage c
Mains voltage in phase C
869
Active Power a
Active power in phase A
870
Active Power b
Active power in phase B
871
Active Power c
Active power in phase C
875
Apparent Power a
Reactive power in phase A
876
Apparent Power b
Reactive power in phase B
877
Apparent Power c
Reactive power in phase C
879
Apparent Power
Mains reactive power
Due to error tolerances it is possible that the displayed active values are not plausible, especially
in the case of low power.
08/2010
RPS TL
113
9.20
Actual value memory
The actual value memory enables monitoring of maximum and average values determined over a certain
period of time.
Actual value memory
No.
289
290
291
292
Identification
Description
Maximum heat sink temperature of frequency inverter reached
during working hours.
The calculated average heat sink temperature of the frequency
Average Value Heat Sink Temp. inverter. The temperature measurements for calculation of the
average value are performed every 5 minutes.
Maximum inside temperature of frequency inverter reached durPeak Value Inside Temperature
ing working hours.
The calculated average inside temperature of the frequency inAverage Value Inside Temperaverter. The temperature measurements for calculation of the
ture
average value are performed every 5 minutes.
Peak Value Heat Sink Temp.
301
Energy, positive
The energy fed into the grid during working hours.
302
Energy, negative
The energy tapped from the grid during working hours.
The working hours can be read via parameter Working Hours Counter 244.
114
RPS TL
08/2010
9.21
No.
10
27
28
33
110
150
152
394
395
532
573
574
575
803
812
825
826
828
829
830
834
835
836
837
838
839
840
900
903
918
919
924
925
926
Parameters
Parameters of solar inverter
Description
Unit
Setting range
Factory setting
Baud rate RS232/RS485
Selection
5 – 57600 Baud
Set password
0 … 999
0
Control level
1…3
1
Language
Selection
1 - English
Depending on INV
S. Software Release
Selection
module
Depending on INV
S. Isq_Controller
Selection
module
Depending on INV
S. Isd_Ccontroller
Selection
module
RS232/RS485 NodeID
1 … 30
1
Protocol type RS232/RS485
Selection
0 - VABus
44- Electrical cabiOp. Mode Digital Output 3
Selection
net fan
Operation mode intelligent curSelection
11 – Ixt + Tc
rent limits
Power Limit
%
40,00 … 95,00
80
Limitation Time
min
5 … 300
15
depending on
Max. Output Current
A
depending on type
type
depending on
Max. Active Power
kW
depending on type
type
Switching Limit Heat Sink
°C
-35 … 0
-15
Temp.
Switching Limit Inside Ttemp.
°C
-35 … 0
-15
Operation mode overvoltage
Selection
1 - Warning
protection
Operation mode isolation moniSelection
2 - Permanent
toring
V DC Start
V
450,0 … 750,0
500
P Switch Off Limit DC
kW
0,00 … 20,00
depending on type
Allowed No. of Auto-Acknowl.
0 … 20
15
Delay Time Auto-Acknowl.
min
1 … 20
5
V DC Switch Off Limit
V
405,0 … 650,0
450
P Switch Off Limit AC
kW
0,00 … 20,00
depending on type
Off Time
min
1 … 20
5
Turn On Delay Time
min
1 … 30
10
Depending on Inv
Node-ID
-1 … 63
module
Baud rate
Selection
8 to 1000kBit/s
SYNC identifier
0 … 2047
128
Depending on Inv
SYNC-Time
ms
0 … 50000
module
RxPDO1 identifier
0 ... 2047
Depending on INV
module
TxPDO1 identifier
0 ... 2047
Depending on INV
module
RxPDO2 identifier
0 ... 2047
Depending on INV
module
08/2010
RPS TL
Chapter
9.8.1.
9.2
9
9.1
9.12.5
9.12.7
9.12.7
9.8.2
9.8.3
9.13
9.15
9.15
9.15
9.7
9.7
9.13
9.13
9.14.2
9.14.3
9.4.1.1
9.4.1.2
9.14.1
9.14.1
9.4.1.2
9.4.1.2
9.4.1.2
9.4.1.2
9.11.1
9.11.2
9.11.3
9.11.4
9.12.6.1
9.12.6.1
9.12.6.1
115
Parameters of solar inverter
Parameters of solar inverter
No.
Description
Unit
Setting range
Factory setting
927 TxPDO2 identifier
0 ... 2047
Depending on INV
module
928 RxPDO3 identifier
0 ... 2047
Depending on INV
module
929 TxPDO3 identifier
0 ... 2047
Depending on INV
module
930 TxPDO1 Function
Selection
Depending on INV
module
931 TxPDO1 Time
ms
0 ... 50000
Depending on INV
module
932 TxPDO2 Function
Selection
Depending on INV
module
Depending on INV
939 SYNC Timeout
ms
0 … 60000
module
946 TxPDO1 Boolean 1
Selection
Depending on INV
module
950 TxPDO1 Word1
Selection
Depending on INV
module
951 TxPDO1 Word2
Selection
Depending on INV
module
952 TxPDO1 Word3
Selection
Depending on INV
module
962 TxPDO2 Word3
Selection
Depending on INV
module
963 TxPDO2 Word4
Selection
Depending on INV
module
964 TxPDO2 Long1
Selection
Depending on INV
module
1020 Power reduction reference val%
0 … 100
100
ue
1025
Chapter
9.12.6.1
9.12.6.1
9.12.6.1
9.12.6.2
9.12.6.2
9.12.6.2
9.11.5
9.12.6.3
9.12.6.3
9.12.6.3
9.12.6.3
9.12.6.3
9.12.6.3
9.12.6.3
9.9.1
-
Selection
1 - Setpoint via
RS232/485
9.9.1
min
0 … 1000
0
9.9.1
S. power reduction systembus
Selection
66-Reference percentage
9.9.1
1029 Mode lower-/upper frequency
monitoring
Selection
1 - ON
9.10
-
Selection
1 - ON
9.9.2
1031 Rated mains frequency
Hz
35,00 … 65,00
50
9.10
1032 Lower frequency limit
Hz
30,00 … 70,00
47,5
9.10
1033 Upper frequency limit
Hz
35,00 … 70,00
51,5
9.10
1034 Frequency start power reduction
Hz
35,00 … 70,00
50,2
9.9.2
1035 Frequency stop power reduction
Hz
35,00 … 70,00
50,05
9.9.2
1036 Gradient for power reduction
-
5,00 … 50,00
20
9.9.2
1091 Master/Slave operation mode
-
Selection
Depending on INV
module
9.11.7
1092 S. Stator Frequency Start
-
Selection
Depending on INV
module
9.12.7
Power reduction mode
1026 Power reduction timeout
1027
1030 Power reduction at upper frequency limit
116
RPS TL
08/2010
Parameters of solar inverter
No.
Unit
Setting range
Factory setting
Chapter
1093 S. Phi low Start
-
Selection
Depending on INV
module
9.12.7
1094 Q. Phi high Start
-
Selection
Depending on INV
module
9.12.7
kW
depending on
type
depending on type
9.9.1
s
-
60 … 65000
1…4
A/V
9,3 … 200,0
1096
Description
AC nominal power
1099 Hysteresis time
1130 Number of power modules
1135
1136
1137
1138
1139
1140
1141
DC Current Transformer Ratio
MPP-Controller
Start1
Stop1
Start2
Stop2
Start2
Stop3
1180 Operation mode
08/2010
kW
kW
kW
kW
kW
kW
-
Depending
Depending
Depending
Depending
Depending
Depending
Selection
RPS TL
300
depending on system
depending on system
on INV module
on INV module
on INV module
on INV module
on INV module
on INV module
Depending on INV
module
9.4.1.2
9.12.3
9.12.4
9.4.2.1
9.4.2.2
9.4.2.1
9.4.2.2
9.4.2.1
9.4.2.2
9.11.6
117
10
10.1
Maintenance and service
Special safety instructions
DANGER
Live components - Risk of electric shock!
In the case of improper maintenance and service, accidents or material damage may result
from non-compliance with the safety instructions. Note:
•
High mains voltage and high DC voltage from solar modules.
•
Maintenance work may only be performed with the power supply to the solar inverter
switched off.
•
The solar inverter must be isolated safely from the PV generator and the grid.
•
Switch off external disconnecting devices. Secure to prevent restarting.
•
Disconnect the solar inverter from power supply. For more information, see chapter 8.7
Decommissioning. Verify safe isolation from power supply.
•
Earth and short-circuit (not DC side).
•
Even with the AC and DC main switches turned off, dangerous voltage levels may be
present in the solar inverter. This is the case if:
-
No external isolation facility is installed and turned off.
-
The DC link capacitors are still charged. Wait for some minutes until the DC link capacitors have discharged before starting to work at the solar inverter.
•
Using suitable protective equipment, secure live components in the work area to prevent
contact.
•
For a functional test of the electrical equipment, the solar inverter must be connected to
power supply. Take particular care when doing this. Do not touch any live parts or cable
ends.
CAUTION
Danger of burns due to hot surfaces!
Even some time after shutdown of the solar inverter, certain components, e.g. heat sink, fuse,
sine filter may have a high temperature.
•
Do not touch the surfaces directly after shutdown. Wear safety gloves where necessary.
CAUTION
Danger of crushing due to rotating fan!
Fans are installed in the upper area of the inverter. These fans might start suddenly without
warning.
118
•
Always ensure that the unit is isolated from power supply.
•
In the case of the solar inverters, the external control voltage supply must be disconnected.
RPS TL
08/2010
10.2
Service intervals/preventive maintenance
Carry out the following maintenance work at the specified intervals. Shorter intervals may be required, depending on ambient conditions.
Service
Monthly
Subject
Maintenance
work
Air inlet filter,
Filter mats
Clean, replace if
necessary
Error protocol
Check
Yield
Check
Yearly
Subject
Maintenance
work
Reason
Filter mats can get clogged by pollen, dust, etc. and prevent
proper cooling as a result. Dirty filter mats can result in overtemperature and consequently failures. The filter mat covers can
be removed from the outside of the door.
Frequent errors or errors which are present over extended periods may be a sign of hardware defects. In order to prevent
unplanned outages, the relevant component(s) should be replaced in due time.
Ageing and frequent failures reduce the yield. Compare the expected yield with the actual yield.
Reason
The exterior components of the solar inverter (handles, contacts, filter grilles, etc.) may be damaged by improper handling.
Moisture, insects, dirt or dust may enter the solar inverter. In
Visual inspection,
Interior
the case of significant moisture, insect, dirt/dust load, eliminate
clean if necessary
the cause.
Insulation of the cable, particularly power cables, may change
Visual check,
its color due to temperature or ageing, change its structure or
Cabling and terminal
replace if neces- be damaged by animals. Replace damaged cables.
connections
sary
Terminal connections may loosen in the course of time and must
be checked for tight fit.
Warning labels and signs may loosen in the course of time due
Warning information,
Check, replace if
to environmental impact. Replace damaged or missing warnings
signs
necessary
and signs.
Unusual operating noise is a possible sign of a fan failing soon.
Defective filters can result in overtemperature and consequently
Fan
Functional test
failures. Visual inspection and check for unusual noise during
operation.
Insulation,
Possibly, the signal contacts or the electronics of the monitoring
voltage, earth fault
Functional test
equipment don't work properly and defects will not be recogfrequency monitoring
nized. Check signaling. Check changeover contacts.
In the case of RPS solar inverters with earth fault control, an
PV generator
Insulation test
insulation check for earth faults must be carried out at the
grounded and the non-grounded pole.
Visual inspection The optical detector should be checked, especially after thunor reading of
derstorms. After a defect, the solar inverter remains ready for
Overvoltage protection
warning messag- operation, but the overvoltage protection must be replaced as
es
soon as possible.
The switches are hardly ever actuated. Nevertheless, there may
Visual inspection/ be defects. Sparks may form in switching operations under load.
Switches, contactors
functional test
These may change the color of the switching device. Replace
the switches, contactors in case of significant discoloration.
Exterior
08/2010
Visual inspection
RPS TL
119
10.3
Test/inspections
If the solar inverter is subject to regular inspections by an inspection/testing organization, the relevant inspection intervals must be kept by the operator.
120
RPS TL
08/2010
11
Error diagnosis
The following error messages, including a code and moving text, are displayed on the control unit after a
fault. Press the start/enter button to stop error display.
11.1
List of errors
The last 16 error messages are saved in chronological order and the No. of Errors 362 shows the number
of errors which have occurred since initial commissioning of the frequency inverter. The error code FXXXX is
displayed in menu branch VAL of the control unit. For the meaning of the error code, refer to the following
chapter 11.2 "Error messages". The error message can be acknowledged via the illuminated "Reset" button.
List of errors
No.
Description
Function
310 last error
hhhhh:mm ; FXXXX error message.
311 second to last error
hhhhh:mm ; FXXXX error message.
312 to 325
Error 3 to error 16.
362 No. of Errors
Number of errors occurred after the initial commissioning of the
frequency inverter.
The error and warning behavior of the frequency inverter can be set in various ways. Automatic error acknowledgment enables acknowledgement without intervention by an overriding controller or the user. No. of
self acknowledged Errors 363 shows the total number of automatic error acknowledgments.
List of errors
No.
Description
363 No. of self acknowledged Errors
11.2
Function
Total number of automatic error acknowledgments with synchronization.
Error messages
The error code saved after a fault consists of the error group FXX and the code number XX.
Current error (P259)
0000 No Fault
F0100 IxT
F0102 Long Term Ixt
F0103 Short-Term Ixt
Description
No error present.
Overloaded for more than 60 s.
Frequency inverter overloaded (60 s).
Short-term overload (1 s).
F0200 Heat Sink Overtemperature*
Heat sink temperature of frequency inverter too high, check
cooling and fan.
F0201 Heat Sink Sensor
Temperature sensor of frequency inverter defective or ambient temperature too low.
F0300 Overtemperature*
Inside temperature of frequency inverter too high, check
cooling and fan.
F0301 Undertemperature
Inside temperature of frequency inverter too low, check ambient temperature.
F0403 Transformer Overtemperature
Temperature of transformer or sine filter too high.
* Overtemperature errors can be acknowledged only when the Temperature has dropped by 5 °C.
08/2010
RPS TL
121
Current error (P259)
F0404 Isolation
Description
Earth fault in PV generator, check DC cabling. Check internal
wiring, see chapter 7.2.3 59Connection of insulation monitor.
F0405 Mains supervision
Mains parameters outside of nominal range, check mains
connection for voltage/frequency deviations. Check fuses.
Check main switch current Setting.
F0406 Lighting protection
Defective surge arrester identified. Check internal wiring, see
chapter 7.2.2 Connection of overvoltage protection
F0407 Mains Contactor
Main contactor does not pick up although the PV power is
sufficient for feeding power to grid. Check main contactor,
signal contact and main contactor control circuit.
F0409 Pre-magnetization
Not significant for the modular system.
F0412 Mains monitoring device
Digital inputs S5IND and EM-S3IND logically not identical.
Check mains monitoring devices and their settings.
F0420 Mains upper frequency limit
Mains frequency exceeds the limit set in parameter P1033.
F0420 Mains lower frequency limit
Mains frequency is below the limit set in parameter P1032.
F0500 Overcurrent
Overcurrent. Solar inverter overloaded, check filter, transformer and mains connection.
F0501
F0502
F0505
F0506
F0507
Short circuit or earth fault at output. Check cabling.
String current limit exceeded.
Total of currents is not correct. Check cabling.
Overcurrent, quick triggering by hardware.
Overcurrent, slow triggering by software.
Uce-Control
Dyn. Phase-Current limitation
Earth fault
Overcurrent
Overcurrent
F0700 Overvoltage
DC link voltage too high. Check generator configuration.
F0702 Power failure
Mains failure detected. Mains defect detected. Quick protection.
F0801 24 V Supply Voltage too low
F0804 24V-Supply Overvoltage
Electronic voltage too low. Check control terminals.
Electronic voltage too high. Check control terminals.
F0900 Preload contactor
Pre-charge contactor in mains unit AEC does not pick up.
F1201 Diagnostic-Error STO
At least one of the release paths is defective. Check cabling
and EMC.
F1205 STO 5s-Supervision
The two release paths were not actuated at the same time.
Check release switches.
F1300 Earth fault
F2200 Systembus Timeout SYNC
122
Earth fault on inverter output.
An error has occurred in the system bus communication.
Check wiring of system bus. Increase SYNC-Time 919 if
necessary.
RPS TL
08/2010
11.3
Warning Messages
The current warning is displayed by a message in the warning status and can be used for early reporting of
a critical operational condition. If a warning is present, this is indicated by the display field WARN of the
control unit. Via the actual value parameter Warnings 269, the current warning can be displayed.
The warn status refers to the hexadecimal sum of the warn code
Code
Warning message text
Meaning
A0000
There is no warning.
A0001 Ixt
Overload (A0002 or A0004)
The warning limit for the available overload was
A0002 IxtSt Warning short-term
reached.
A0004 IxtLt Warning long-term
A0008 Tc
Heat sink temperature
The heat sink temperature at which a warning is
output was reached. Check ambient temperature.
A0010 Ti
Inside temperature
The inside temperature of the frequency inverter
at which a warning is output was reached.
Check ambient temperature.
The output current of the solar inverter is limited.
The solar inverter is released and in start state.
The warning message is displayed if the solar
inverter has been released via the control switch
but is not in feed-in mode yet.
A0020 Lim
Output current
A0040 INIT
Initialization
A4000 UDC
DC Voltage
The DC Voltage has reached the type dependent
minimal value. DC disconnection open or insolation not sufficient.
Surge arrester
Defective surge arrester identified. The behavior
set in parameter Op. Mode overvoltage protection 828 was triggered. A defect is indicated at
the surge arrester (visual signal). Replace defective surge arrester. Check internal wiring, see
chapter 7.2.2 Connection of overvoltage protection.
A8000
WARN2
Example:
A8040 Lim WARN2
A0040 + A8000 = A8040
The warnings initialization and surge arrester are reported.
08/2010
RPS TL
123
12
Plant monitoring
In the standard variant, a control unit is installed in the door. This unit is used for parameter configuration
and display of actual values and error messages. Optional components enable monitoring of the plant via
various interfaces and data networks.
12.1
Plant monitoring by means of data logger
Data logger RPSlog1000 for the monitoring of several inverter modules.
Option
Alarm
data logger
ion
ect
n
RPS Log 1000 H
n
-Co
S0
RS485
LAN
RS232
RS485
Energy meter
3
5 1 4 kWh
Sensorbox (Insolation and
module temperature)
USB
°C
RS485
Module
temperature
Connection of up to
20 inverter modules
RS232
VPlus
Nearby plant
°C
Ambient
temperature
km/h
Wind
speed
Telephone line
Analogue modem
GPRS Modem
Internet
Mobile
network
Telephone line
DSL-Router
Figure 12-1: Plant monitoring with data logger RPSlog1000
Features of optional data logger RPSlog1000:
-
Graphical touch screen display
-
Relay for external alarming
-
LAN interface (10/100 MBit/s)
-
Web control
-
Email/SMS/Homepage messaging
-
Remote inquiry
-
S0 input for digital power meters
-
USB port for data transfer via USB stick
-
512 MByte memory for yield data
-
Monitoring/recording for up to 20 inverters
124
RPS TL
08/2010
The data logger documentation is available separately.
Index
A L AC distributor 84
Actual values 93
actual value memory 114
of mains 113
Language 92
Lightning protection 55
M Measurement terminal
AC 89
DC 89
Measurement terminals 89
Menu
Actual values 86
Parameters 86
Monitoring
Grid 48
Insulation 48
temperature 50
MPP 98
C Cables
cross-sections 77
Commissioning 87
Connection 55
AC 74
DC 77
Control functions
intelligent current limits 111
Control unit 85
D O Displays 93
Operating statuses 97
Options 93
E Electrical cabinet fan 109
Electrical connections 15, 55
Error messages 121
acknowledge 110
External power supply 75
P Parameters 92, 115
Password 92
Power limitation 99
F R Fan
Electrical cabinet 109
Start temperature 109
RPS
Function 43
S G Service 118
Software version 93
Surge arrester 50
Grid monitoring 48
I T Installation 15, 51
Insulation monitor 48
Intelligent current limits 111
Internal power supply 75
Inverter module 83
Temperature monitoring 50
Transport 17
V Voltage controller 98
K KP500 85
08/2010
RPS TL
125
INDUSTRY PROCESS
AND AUTOMATION SOLUTIONS
Bonfiglioli Worldwide & BEST Partners
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PHOTOVOLTAIC SOLUTIONS
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