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Installer’s Manual.
for skilled and authorized electricians
blueplanet...
green power
For skilled and authorized electricians
Installation Instructions
Blue Planet
1501xi / 2901xi / 3601xi
1. About this document 2
1.1 Attachment and Maintenance of documents 2
1.2 Symbols used in this document
1.3 UL Certification/Labeling
1.4 Type label
2
2
2
2. Important Safety information and instructions
Save these Instructions 2
3. Notes concerning installation and operation 3
3.1 Factory warranty and liability
3.2 Service
3.3 Intended (normal) use
3
4
4
4.1 Dimensioning of the PV generator
4.2 Protective concepts
4.3 Mechanical dimensions
4
4
5
5
5. Installation and startup 6
5.1 Selecting the appropriate place of installation 6
5.2 Installing the inverter
5.3 Electrical connections
6
8
5.4 Connecting the fault-signal relay
5.5 Connection of the S
0
output
5.6 Connection of the RS485 interface
5.7 Startup of the inverter
5.8 Ground fault indication
5.9 Jumper Position
10
10
10
11
11
11
6. Applications/Acceptance by Your Utility
Company 12
7. Switching off the inverter
8. Troubleshooting
12
12
15
9.1 Peak efficiency curves of blueplanet inverter series
10. Certificates of Compliance
10.1 UL Certificates of Compliance for all blueplanet inverters
10.2 Supplement to Certificates of Compliance
16
18
24
About this document
The following information will guide you through the entire documentation. Further documents will be valid in conjunction with these operating and installation instructions.
We shall not be liable for any damage caused by nonadherence to the instructions given in this manual.
Pertaining documents
During the inverter installation please observe all assembly and installation instructions for components and other parts of the system. These instructions are shipped together with the respective installation components or supplementary equipment.
1.1 Attachment and Maintenance of documents
Please keep these operating and installation instructions in a safe place to ensure that they are available if needed.
1.2 Symbols used in this document
Please observe the safety information provided in this manual when operating your inverter!
Warning!
Lethal Hazard!
Warning
Danger
Caution
Important!
Non-adherence to these instructions may adversely affect the operating convenience or func-
tionality of the device.
This symTo connect the inverter the AC and DC side must be disconnected from all voltage
Caution!
PoTo reduce the risk of fire, connect only to a circuit provided with branch circuit over-current protection in accordance with the
KACO Solar Inc.
Danger!
Lethal Hazard by Electric
Shock!
Caution!
Potential hazard for the product and environment!
Note!
Useful information and remarks
2
UL labeling is used to document that the blue planet inverter indicated on the type label meets the fundamental requirements according to the following IEC directives:
- Directive concerning Electromagnetic Compatibility with
Class B (Council Directive 89/336/EWG)
- Low Voltage Directive (Council Directive 73/23/EWG
For more information on UL certification please see section
10.
The type label indicating the exact device description is located on the support panel at the underside of the enclosure.
2. Important Safety information and instructions
Save these Instructions
Danger
Danger!
Danger due to lethal voltages!
Hazardous live voltages are present inside the device/instrument and power lines.
Therefore, the device/instrument must only be installed and opened by a skilled electrician.
Even when the device/instrument is switched off, dangerous live voltages may still be present inside the instrument.
Standards and Regulations
Electrical conformity according to U.S., Canadian and international safety operating standards and code requirements:
- UL 1741 – Standard for Inverters, Converters, and
Controllers for Use in Independent Power Systems
- CSA C22.2 No. 107.1-01 General Use Power Supplies
- IEEE Recommended Practice on Surge Voltages in Low-
Voltage AC Power Circuits.
- NEC Sections 690 (ANSI/NFPA 70)
The blue planet inverter has complete on-board overcurrent, over-temperature and anti-islanding protection.
Technical rules
The assembly must be in compliance with the local regulations and technical rules.
Regulations concerning the prevention of accidents
The inverter must be installed by an approved skilled electrician who is responsible for the adherence to existing standards and regulations.
The proper and safe operation of the device/instrument requires proper transportation, storage, erection and assembly, as well as careful operation and maintenance.
Only personnel who have read and fully understood all safety information contained in these operating and installation instructions, as well as the assembly, operating and maintenance instructions, shall be authorized to operate the inverter.
Installation Instructions (US)
During the operation of this device, certain parts of the device inevitably carry hazardous live voltages, which may lead to severe personal injury or even death. The following precautions should be followed to minimize the risk of lethal hazards or personal injuries.
The installation of the device must be in compliance with the relevant safety regulations (e.g. NEC 690) or other applicable national or local provisions. Proper grounding, conductor dimensioning and an appropriate short-circuit protection must be provided to ensure operational safety.
All instrument covers must remain closed during operation.
Prior to performing any visual checks and maintenance work the device must be disconnected from all power sources and protected against accidental activation. If measurements must be conducted while the device is connected to power, NEVER touch live terminals. Remove all jewelry from your wrists and fingers. Ensure that the equipment is in proper condition.
When working on an energized inverter, use appropriate tools and do not come into contact with grounded surfaces including the earth.
Exactly follow the instructions given in these operating and installation instructions and especially observe all information concerning possible hazards, warnings and precautions.
Should any specific problems occur, which are specifically in this or the operators manual, please contact your specialist dealer.
Modifications/Changes
Performing any modifications or changes on the inverter is generally prohibited. Performing any changes or modifications in the environment of the inverter is only permitted if they comply with national standards.
Transportation
Caution
Caution!
Hazard of damage due to unauthorized modifications/manipulation! By no means manipulate the inverter or modify or change the inverter or any other part of the installation!
The blue planet inverter is subjected to extensive testing and inspection in our test field, so as to ensure the superb quality of our products. Our inverters leave our factory in proper electrical and mechanical condition. Special packaging ensures that nothing can happen during the transport to our customers. Nevertheless, transport damage may not be ruled out completely. In this case, the forwarding agent/carrier will be responsible.
Please check the inverter carefully on arrival. Should you discover any visible signs of damage on the packaging, which may imply that the inverter may be damaged, or should you find any visible signs of damage on the inverter please notify your responsible forwarding agent/carrier immediately?
If necessary, your solar installation provider or KACO solar service specialist will assist you. However, written damage
KACO Solar Inc. 3 reports must be received by the forwarding agent within six days after receipt of the goods.
Use exclusively the original packaging for returning the inverter – only this material will ensure safe transportation.
3. Notes concerning installation and operation
3.1 Factory warranty and liability
Terms and conditions
Customers shall contact KACO Solar, Inc. to obtain a
Return Merchandise Authorization (RMA) number before returning products. KACO Solar, Inc. accepts no responsibility or liability for products returned without prior authorization. KACO Solar, Inc., at its sole determination, will repair or replace inverters returned by customers.
Inverters must be returned with a copy of the original dealer invoice or written proof of installation if the inverter has not been already registered by fax or mail. Inverters must include a legible data label showing the serial number and the type of inverter. The warranty belongs to the unique serial number of the inverter and not any particular person; therefore, KACO inverters are sold with a 10 year transferable warranty.
The inverter must be returned to KACO Solar, Inc. in the original packaging materials or packaging providing equal protection during shipment. KACO Solar, Inc. is not responsible for damage occurring during shipment.
To satisfy the claims of our easy swap warranty; KACO
Solar, Inc. will ship any replacement inverter within 24 hours after a claim has been issued and approved. If the inverter fails out of the box or within a 6 month period of operation a new inverter shall be issued. After 6 months of installation, a factory reconditioned unit of newer or similar age shall be issued.
Exclusion of Liability
KACO Solar, Inc. disclaims any liability for direct or indirect damages due to:
1. improper installation or commissioning,
2. modifications, alterations or repair attempts,
3. inappropriate use or operation,
4. insufficient ventilation of the device, regulations,
6. flood, lightning, overvoltage, storm, fire (acts of nature).
We do not guarantee that the software is completely free of faults. In most cases technical alerts will be posted on the
KACO Solar website describing how to avoid the effects of the fault. If the concern is greater, written explanation will be mailed to registered installers. The solar system installer is responsible for the correct selection, proper use, supervision and consequences of the use of software.
We reserve the right to make alterations that will improve the functioning of the device.
KACO Solar, Inc. will not be liable for any direct, indirect or consequential damages, losses, costs or expenses however arising in contract or tort, including without restriction any economic losses of any kind, any loss or damage to property, any personal injury, any damage or injury arising from or as a result of misuse or abuse, or the incorrect installation, integration or operation of the product.
Installation Instructions (US)
3.2 Service
From the initial stages of product development, high quality and longevity for our inverters is of central importance to us.
This philosophy is the result of our experience of over 60 years in the field of power conditioning and current inverters.
Despite these quality-assuring measures, in some rare cases errors may occur. KACO Solar, Inc. will offer a maximum of assistance if one of these cases should arise.
KACO Solar, Inc. will take every effort to remedy any defects fast and without unnecessary bureaucracy. Please contact our service department directly for fast and efficient support.
Service Reimbursement
KACO Solar will pay $100.00 for each inverter replacement and $25 per additional inverter at the site when there is a true inverter failure within the first one year of commissioning. Thereafter, KACO customers will still enjoy the protection of the standard 10 years replacement guarantee and compensation for service performed to repair an inverter will be awarded on a case by case basis.
Technical support is available by telephone at 1-866-522-
6765 Monday through Friday 8 AM – 5PM PST.
3.3 Intended (normal) use
Blue planet inverters are built according to state-of-the-art and approved safety requirements. However, improper use may cause lethal hazards for operators or third parties and/or damage of instruments/devices or other property.
The device is intended to convert the direct voltage generated in the photovoltaic (PV) modules into alternating voltage (AC) and feed this voltage into the grid.
The inverter is intended to convert direct current (dc) energy generated by the photovoltaic (PV) modules into alternating current (ac) energy that is then fed into the utility grid.
Any use other than the specified intended use is not deemed intended or normal use, and the manufacturer/supplier shall not be liable for any damage caused by such unintended use. Damage caused by unintended use is at the sole risk of the operator.
The term "intended use" shall also include the adherence to the operating and installation instructions. Some of the documents which are needed for these applications and acceptance are attached to these installation instructions.
The electrically isolated blue planet xi-series devices are currently available for two different power classes. The appropriate inverter type should be selected in accordance with the power rating of the selected photovoltaic module array. The max. power values are indicated in the data sheet (Section 9).
The inverter designation is shown on the front side above the display and on the type label.
4.1 Dimensioning of the PV generator
The selection of the PV generator is of crucial importance when dimensioning a PV installation. It must be observed by all means that the solar generator is the right match for the
KACO Solar Inc. 4 inverter. Please observe the data given in the Technical
Data Sheet (Section 9) for dimensioning the solar generator.
Caution
The design and dimensioning KACOCalc pro is available for easy selection of PV modules – please obtain your free download at http://www.kacosolar.com
Dimensioning of the PV generator:
The number of PV modules connected in series must be selected in such a way that the output voltage of the PV generator is maintained within the admissible input voltage range of the inverter – even in the event of extreme external temperatures. The U.S. module temperatures can significantly vary and you should be sure to consult your solar installation specialist about the effect on final voltage calculation.
It is important that the temperature coefficient of the solar modules is observed. The following criteria must be met for calculating the voltage of the PV generator.
Uo (-13°F) < max. input voltage (400 VDC)
Even at very low external temperatures (-13°F), the no-load voltage of the connected string must remain within the admissible input voltage range. For example, if the temperature falls from 77°F to –13°F, the no-load voltage of
12-V modules will increase by approx. 2.8 V per module
(5.6V for 24V modules). The no-load voltage of the entire string must be less than 400 volts.
U
Mpp
(+140°F) > min. input voltage (125VDC)
Caution!
Using the device for any purpose other than intended/normal use is prohibited!
Even at very high external temperatures (+140 °F) the MPP voltage of the connected string should remain within the admissible input voltage range. If the temperature rises from
77°F to 140°F, the MPP voltage of 12V modules will decrease by approx. 3.6 V per module (7.2 V for 24V modules). The MPP voltage of the entire string should be
>
125 V.
E ven if the MPP voltage is beyond the admissible input range, the installation nevertheless will continue to work properly. However, the delivered power is slightly less than the maximum yield.
P rovided that the input voltage is within the admissible input voltage range, the inverter will not be damaged if a connected PV generator should supply current above the max. usable input current.
If the PV generator should supply more than the max. PV generator power of the inverter for a short time, particularly due to clouds and relatively low module temperatures, it is possible that the inverter switches off for safety reasons and automatically switches on again after approx. 10 seconds.
The overload status is shown on the display in plain text.
Under normal circumstances, however, the dynamic control of the inverter ensures that this condition is recognized and the inverter operation is continued without any interruption.
T he solar generator still represents the most substantial cost factor of a solar installation. Therefore, it is very
Installation Instructions (US)
important to obtain maximum energy yields. To achieve this goal, solar generators located in the US should be orientated towards the South at an angle of inclination of
30°, and shading of whatever kind should be prevented under all circumstances.
In many cases, the rec ommended angle of inclination c annot be implemented for technical reasons. To achieve the highest energy yield of a solar generator with optimal orientation (South, inclination angle of 30°), the efficiency of the solar generator can be increased.
For roofs that are orientated toward s the East/West we re commend two-string PV installations. To ensure optimum yield of the installation, the first string should be installed on the East side of the roof, whereas the second string should be installed on the West side of the roof.
Please consult your specialist dealer o r notify us if you s hould require any further assistance.
4.2 Protective concepts
The following monitoring and protective functions are integrated in blue planet inverters:
- BiSI grid monitoring to protect against personal
injuries and avoid islanding effects according to UL 1741
semiconductors against high-energy transients on the grid
side
- Temperature monitoring of the heat sink
- EMC filters to protect the inverter against high-
frequency grid interference
- Grid-side varistors to earth/ground, to protect the
inverter against burst and surge pulses.
- Ground Fault Detector Interrupter (GFDI
) according to NEC 690.5
Figure 4.1: Dimensions of Blue Planet
Type
1501xi
2901xi
Height
17 3/4"
19 5/8“
Width
13 3/8"
13 3/8“
3601xi
25 5/8“ 13/3/8“
Depth
7 7/8"
8 3/8“
8 3/8“
KACO Solar Inc. 5 Installation Instructions (US)
5. Installation and startup
5.1 Selecting the appropriate place of installation
Blue planet inverter housings meet the requirements of NEMA-3R.
The inverter is outdoor rated. In addition, the installa tion environment should be well ventilated so as to protect against overheating and ensure long inverter life.
T he following rules should be observed when sel ecting the place of installation of your inverter:
Ensure good access for assembly or service work.
- Maintain a minimum clearance of 19 11/16 in. arou nd the device and between the device and other objects, such as cabinets, ceiling, or similar installation.
- Please ensure free air circulation around the device and through the heat sink at the rear side.
- If the inverter is installed in a switch cabinet or similar, please provide forced ventilation to ensure that heat is dissipated adequately.
- Ensure that the wall has an adequate load-bearing capacity and only use the appropriate installation material.
- In areas with a special risk of flooding, always make sure to install the inverter in a sufficiently elevated place.
- Installation at eye level makes it easier to read the display.
- Temperature: Ensure that the GT Inverter is mounted in a location where the ambient temperature range is -4° to
+104° F.
Important!
Due to the high system voltage, less current may flow on the DC voltage side than on the AC voltage side. Given the same cable cross-sections, losses are therefore higher on the AC voltage side than on the DC voltage side.
The inverter will ideally be located in close proximity to the local utility's electric meter.
6
Figure 5.1b: Wall installation of blue planet
Installation Instructions (US) KACO Solar Inc.
Figure 5.1a: Wall installation of blue planet
The inverter is shipped together with an installation kit consisting of four dowel pins and four 2 ¾ in. screws. Prior to installation the condition of the mounting wall has to be checked. If necessary, use a kit other than the one shipped with your inverter.
- Drill the holes for the dowel pins according to the positions indicated on the mounting plate.
- Place the dowel pins into the holes.
- Do not just hang the dowel pins on holes in drywall (wall board). Ensure that the screws and preferably the dowel pins are fastened to a solid wood support such as a wall stud
(2x4 lumber) mounting plate to the wall. Make sure that the arrow shown on the mounting plate is directed upwards. suspension fixture. Ensure that the bars rest on the appropriate lugs/noses in the heat sink.
Lock the safety catch. To do, this, slide the upper end of the catch towards the wall until the groove is parallel to the wall (see )
Figure 5.2: Safety catch is open (left) and closed (right)
KACO Solar Inc. 7 Installation Instructions (US)
General Information
The electrical connections can be established after the inverter has been installed in its fixed location.
Caution!
The electrical installation of the blue planet must only be performed by a qualified electrician.
Caution
Caution
Caution!
To connect the inverter the AC and DC side must be disconnected from all voltage sources and protected against inadvertent switching-on.
Caution
Caution!
To reduce the risk of fire, connect only to a circuit provided with branch circuit overcurrent protection in accordance with the
National Electrical Code, ANSI/NFPA70.
All applicable safety instructions and technical connections stipulated by local utility and the relevant NEC codes along with any other local or regional stipulations must be followed.
The connection of the PV-Generator and the grid are established via terminal blocks on the printed circuit board
(See Figure 5.3).
Openings for conduit fittings are located on the bottom plate of the unit.
Open the door of the housing / enclosure. The door is secured against opening by means of two recessed head screws on the right upper side.
KACO Solar Inc.
The max. connecting wire crosssection for the AC and DC connection terminals is 13.3 mm
2
(AWG 6) for flexible lines and 16 mm
2
for rigid (non-flexible) lines. The stripping length is 10 mm. The terminal is to be tightened with a torque of 1.2 to 1.5 Nm.
8
Figure 5.3: Connection box of blue planet
Grid connections
3-lead connections are used (L1, GRD, L2). To insert the wires use watertight conduits at the underside of the housing.
We recommend the following wire cross sections for cable lengths up to 60 feet:
Blue Planet 1501xi:
Blue Planet 2901xi:
AWG 12 15A Breaker
AWG 12 20A Breaker
AWG 10 30A Breaker Blue Planet 3601xi:
Larger cross sections should be used for longer cable lengths.
Danger
Please make sure to use
w
ires with sufficient cross section width to avoid excessive line impedance (internal resistance of the electrical grid) between the domestic distribution and the respective blue planet inverter.
NEC, ANSI/NFPA 70 wiring methods must be used.
At a high line impedance, i.e. long ACside leads, the voltage at the grid terminals will increase during power delivery. This voltage is measured by the inverter. If the voltage across the grid terminals exceeds a defined limit, the inverter will switch off due to grid overvoltage. This condition must be taken into consideration when sizing the AC lead.
Danger!
Hazard due to electric shock from contact with terminals carrying high voltages! The external AC and DC disconnects should be opened before any connections are made.
Installation Instructions (US)
Route the wire through the conduit fitting. Connect the wire according to the mark shown on the sticker on the right side of the PCB.
Caution
Caution!
Please check all leads for proper connection.
Once again check if all connected leads are securely fastened. Fasten the wire connection of the cable fitting.
A disconnect switch shall be provided by others for the dc input and ac output circuit.
The PV array connections are established on the right side of the connection box.
Caution
Caution!
Do not connect the ground to the
DC negative at any point. This is already done within the inverter!
Caution
Caution!
Risk of damage!
Ensure correct polarity.
Danger
KACO Solar Inc.
Danger!
To ensure maximum protection against hazardous live voltages during the assembly of the photovoltaic installation, both the plus and minus leads must be strictly isolated from earth potential (GRD).
Determine the DC voltage between protective earth (PE) and the positive lead or, respectively, between ground and the negative lead of the PV generator. If stabilized voltages can be measured, this indicates a ground fault in the PV generator or generator wiring. The ratio between the measured voltages indicates the location of this fault. Make sure to remedy this fault prior to performing any further actions!
Determine the electrical resistance between the ground and the negative
(minus) lead of the PV generator.
A low resistance value (< 2 M
Ω) indicates a high-resistance ground fault of the PV generator, which must be remedied prior to further installation!
Caution
Caution!
Prior to connecting the DC leads to the inverter terminals the voltage of the solar generator must be measured.
The DC voltage must not exceed max. 400 VDC. Connecting to higher voltages will result in the destruction of the device.
Connect the DC leads as described in the following:
-
I
nsert the DC leads through a watertight conduit at the underside of the housing.
- Connect the positive lead (+) on the DC+ terminal, and the negative lead (-) on the DC- terminal.
- Connect the ground wire to one of the marked grou nd terminals.
- Ensure all connections are correctly wired and properly torqued with 17 in-lb (1,2Nm).
9
Caution
- The input and output circuits are isolated from the enclosure.
- System grounding is the responsibility of the installer as required by sections 690.41 and 690.49 of the
NEC, ANSI/NFPA 70
Installation Instructions (US)
5.4 Connecting the fault-signal relay
T he inverter is equipped with a potential-isolated relay contact to signal faults. If a fault occurs, this contact will be closed.
Max. con tact load: 30V / 1A.
Important!
In the event of a power failure in the public grid the relay will not trigger.
In this case, all LEDs and the display will be extinguished and the inverter will be shut down completely. A fault signal will not be possible in this case!
5.7. The total length of the RS485 wiring should not exceed
250 m.
120 V
Figure 5.4 Fault-signal relay
5 .5 Connection of the S
0
output
T he inverter is equipped with an S
0
pulse output for connection of, e.g. a large display. The pulse rate is adjustable (see page 11, Section 5.8)
Figure 5.5 S
0
-Connection
5.6 Connection of the R S485 interface
On the control board (at the rear side of the door of the blue planet inverter), there are four terminals marked RS485 A and B (see Figure 5.6). To connect several blue planet inverters, terminal A of the first blue planet must be connected to terminal A of the second blue planet; terminals
B are connected in the same way.
You need a twisted and shielded da ta cable for connection, such as an ISDN cable. The connection to proLOG is established analogously. The wiring plan is shown in Figure
KACO Solar Inc. 10
Figure 5.7: Wiring plan for RS485 Interface
Figure 5.7 shows a terminator which is connec ted to the left inverter (R a
, 330
Ω). This terminator resistor is needed on the last device in the chain to ensure correct signal transfer.
The terminator is supplied together with the blue planet inverters.
Within a bus system, such as the RS485, each device taking part in this system must have a unique address
(regardless of whether this is an inverter or current sensor).
For inverters, the address range can be selected between 0 and 31. The address of each inverter can be determined via the Set menu, (see Operator’s Manual).
Important!
Please ensure correct connection of the A and B wires. If these wires are improperly connected, no correct communication will be possible!
Installation Instructions (US)
5.7 Startup of the inverter
After completing the mechanic al and electrical installation you may now put the inverter into operation as follows:
5
NOTE!
The inverter can only be put into operation under daylight conditions
(i.e. at a solar generator voltage of >
100 V).
If no daylight or solar generator voltage is present, the inverter can be activated by pressing the Start key
(see Section 4.4 of the Operating
Instructions), but normal operation will not be possible in this condition.
(Only the values can be read off the display).
Figure 5.8: Jumper Position in normal feed-in operation
(power delivery) – (shipping status)
- Switch on the grid voltage (via the external automatic safety breakers).
- Switch on the solar generator via the
DC circuit breaker (or DC plug-type connector).
The green LED “PV generator“will now be illuminated (if the generator voltage is greater than 125V). The display now shows the current generator voltage: “Start from 125V; measurement xxx V. “ If the measured voltage is greater than 125V, the device will start power delivery after approx.
5 minutes. This starting-up period of 5 minutes is necessary to ensure that the generator voltage is permanently above the power delivery limit of 125V.
A quick-start routine is provided for test purposes – this routine circumvents the start-up peri od. This quick-start is menu-controlled and obtained from the set-up mode
(see Operator’s Manual).
During the normal startup procedure the line power relay is s witched on after approx. 5 minutes (audible acoustic noise), and power delivery is started. This is also signaled by the green “Grid-feeding” LED. The display now shows the delivered power. The “Display” key can be used to indicate the various measurement values (see Operator’s
Manual).
It may be necessary to reset the date and hour (please refer to the Operator ’s Manual).
5.8 Ground fault indica tion
T he Inverter is equipped with a ground-fault detection and y UL 1741. If a ground fault occurs on the DC side the inverter disconnects from the grid and a message is displayed. In this case the inverter blocked until the following actions are done:
- Switch off the AC and DC disconnect.
- Remove the ground fault on the DC side
- Replace the GFDI fuse with a “Littlefuse KLKD 1 AMP
600V” fuse.
- Switch on the AC and DC disconnect.
KACO Solar Inc. 11
Danger
FACTORY USE ONLY! DO NOT
ATTEMPT TO ALTER
SETTINGS! DOING SO WILL
VOID WARRANTY AND COULD
POTENTIALLY BE HARMFUL
TO USER!
Installation Instructions (US)
Utility Company
Your PV installation must meet all applicable utility, NEC and local electrical codes regarding PV installation requirements. The documents you will need to apply for acceptance of your PV system can be provided by your solar system installer. If you are licensed electrical contractor you may be eligible to install the PV system yourself. In this case you may then request all necessary documents directly from your local utility.
7. Switching off the inverter
The inverter must be switched off for adjusting, maintenance and repair work. Please proceed as follows:
To shutdown the inverter follow the directions exactly or arcing might occur when disconnecting the DC connector under load. This will destroy the connectors.
(deactivate the external safety breakers).
- Disconnect the photovoltaic module via the DC disconnect.
- Check that the grid terminals of the inverter are disconnected from all voltage sources.
8. Troubleshooting
Withi n the scope of our co ntinuously expanding Quality
Assurance System, our goal is to rule out and eliminate any faults and defects. You have purchased a product that has left our factory in proper operating condition. Each individual device has successfully passed extensive inspection tests for proper operation and functioning of protective devices, as well as a long-duration test at our factory.
Should your PV installation not work properly despite all th ese measures, we recommend the follow ing procedure for remedi ation:
Check the solar generator and grid conne ctions leading to the PVI, observing all the safety instructions given in this manual. Please observe the inverter carefully and take no te o f the display messages and LED displays.
Below is a summary of possible error and recomm ended remedies:
Warning
Warning!
These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that specified in the operation instructions.
Danger
Danger!
Lethal hazard by electric shock!
Hazardous live voltages can be present in the inverter even if the electrical connections have been switched off or disconnected.
Please wait for five minutes before accessing the inverter. If you have to work on the solar generator you must additionally disconnect all connections of the DC main switch on the generator connection box (or
DC connector). It is not sufficient to switch off the grid voltage.
KACO Solar Inc. 12 Installation Instructions (US)
Table 8-1 Troubleshooting Guide
Error Possible Remedy/Explanation
Daily yield values do not Tolerances Measuring errors are caused by tolerances of the measuring correspond to the values shown on the power meter of the Utility company inv measuring elements/sensors elements/sensors. The tolerances of the individual measuring values are g valu e may deviate from the value shown on the power meter by up to 15%. iven in the Operator’s Instructions. The daily yield
Inverter shows an unrealistic daily peak value
- Grid voltage failure Even conti
if an incorrect daily peak value is displayed the inverter nues to work properly and without any yield losses. Values are r eset overnight. If you wish to reset the display immediately, disconnect the inverter and the DC grid voltage supply and switch on the inverter again.
Grid fuse triggers - Insufficient grid fuse rating
- Inverter hardware is damaged
No display shown
Inverter does not start
Inverter is active but does not deliver power – the display reads: Start from 125 V
Measurement: xxx V
Inverter is active but does not deliver power – the display reads:
Start from 125 V
Measurement: xxx V (measured voltage is higher than 125V)
The inverter terminates grid feeding shortly after starting-up although there is enough solar irradiation
- Device is in the night shut-down mode
- No grid voltage is present
- Solar generator voltage is less than 100V
- Device is in the night shut-down mode
- No grid voltage is present
- The solar generator voltage is less than 100 V
- Insufficient generator voltage. Voltage measured < 125V
- The inverter has interrupted grid feeding due to a malfunction/disturbance
- Defective grid isolation relay in the inverter
At tim es of high solar irradiation the inverter may exceed its rated current for a short time, depending on the type of solar generator.
Therefore, the grid fuse should have a higher rating than the max. grid feeding current.
The grid fuse acts immediately if the inverter changes over to grid feed ing (i.e. on termination of the start-up period). In this case, the inverter hardware is damaged and the device has to be retur ned to KACO for repair.
The inverter shuts down over night.
If the display should not be illuminated during a normal time of the day you should check on the power meter whether or not the device delivers power. If power is delivered the display module is defective, and the inverter has to be returned to KACO for repair.
If no power is delivered you should check that grid voltage is present and that the solar generator voltage is higher than 125 V.
If this is the case but the inverter still fails to deliver power the device will have to be returned to KACO for repair.
The inverter shuts down over night.
If the display should not be illuminated during a normal time of the day you should check on the power meter whether or not the device delivers power. If power is delivered the display module is defective and the inverter has to be returned to KACO for repair.
If no power is delivered you should check that grid voltage is present and that the solar generator voltage is higher than 125 V.
If this is the case but the inverter still fails to deliver power the device has to be returned to KACO for repair.
After sunrise, at sunset, and during times of low solar irradiation due to bad weather conditions the generator voltage or, respectively, generator power fed from the roof may be insufficient for grid feeding
After an interruption of the grid feeding process due to a disturbance (grid power failure, overtemperature, overload, etc.) the inverter always waits for approx. 5 minutes before resuming its grid feeding operation. Grid failures may cause interruptions during the day. If more than 10 interruptions per day should occur over several weeks you should contact your solar installation provider.
Although there is enough solar irradiation, the inverter delivers power for a few seconds only and switches off again. During this short time a grid feeding value between 0 – 5 W is displayed. If insufficient generator power can be ruled out in this case the grid isolation relay is presumably defective and prevents the inverter from being activated.
KACO Solar Inc. 13 Installation Instructions (US)
Error
Inverter causes noise
Possible causes
- Special environmental conditions
Remedy / Explanation
U nder special environmental conditions the devices may cause a udible noise. This may be due to the following causes:
-
Grid effects and/or grid disturbances caused by special consumers (motors, machines, etc.), which are connected to the same grid point or which may be installed in the vicinity of the inverter.
Dynamic weather conditions (frequent changes between sun and clouds) may cause slight line hum due to high energy.
Certain grid condition s may result in grid resonance between the input filter of the device and the grid, which may continue to be audible even after the inverter is switched off.
-
Persons with very sensitive ears (children, in particular) may perceive high-frequency hum of the inverter, caused by the operating frequency of 18 kHz.
T his noise does not affect the operation of the inverter or in verter performance and will not result in any failure, damage o r shorter useful life of the devices.
If the defects found shoul d not be able to be remed ied through utilization of the mea sures described abov e, ple ase contact your solar installation provider or our Serv ice
Department.
Please have the following information ready to enable
the
KACO Solar, Inc.
Service Department to respond quic k ly and properly:
I nverter Data
- Serial number of the device
- Inverter type
- Short description of errors the fault or error reproducib le?
(If so, please provide a sho rt description)
- Does the fault or error occur sporadically?
- Describe the solar irradiation conditions when the e rror occurred
- Hour of the day when the hour occurred
P hotovoltaic module data :
Module type, manufact urer (if available, send d ata shee t)
Number of m odules connected in series
-
Number of strin gs
Gene rator power
KACO Solar Inc. 14 Installation Instructions (US)
Model
DC rated power
Max. PV generator power
MPP range
No-load voltage
Monitoring - input voltage
Max. operating current (DC)
Max. array short circuit current (DC)
Polarity safeguard
Overvoltage protection
Rated output @ 25°C (AC)
Rated output @ 40°C (AC)
Max. output power (AC)
Nominal voltage (AC)
Grid voltage (AC)
Max. utility backfeed current
(AC)
Max. continuous current (AC)
Overcurrent protection
Frequency
Distortion factor
Fault-signal relay
Max. degree of efficiency
C EC efficiency
Internal consumption
Min. grid-feeding power
Cir cuit design
Clock frequency
Principle
Grid monitoring
Optical displays
Operating elements
Connections
Ambient temperature
Temperature monitoring
Cooling
Protection Class
Noise emission
Housing/enclosure
Dimensions W x D x H
Weight
1501xi
1580 W
1700 W
14 A
Input – Electrical data
DC
2901xi
3250 W
3400 W
125 – 300 V
DC
Up to 400 V
DC
Stand-by from U e
>125V
DC
Night shutdown from U e
<100V
DC
30 A
DC
15 A
DC
33 A
DC
Short-circuit diode
Output – Electrical data
Varistors
1500 W 3100 W
1500 W
1650 W
2900 W
3400 W
240 V
211 – 264 V
3601xi
4100 W
4400 W
43 A
48 A
DC
DC
3900 W
3600 W
4400 W
0 A
AC
0 A
AC
0 A
AC
7.8 A
15 A
AC
AC
15.0 A
AC
20 A
AC
24.0 A
30 A
59.3 – 60.5 Hz
<3% at rated power
<5% over the entire range
Potential-free NO contact (make contact), max. 30V / 1A
AC
AC
Open-Collector – output max. 30V / 50mA
Inverter – Electrical data
95.0 %
94.0 %
95.0 %
94.0 %
Night shutdown: 0W
Operation: < 5 W
10W
Grid-tied, electrically isolated, RF transformer
95.0 %
93.5 %
18 kHz
1.) Potential-free DC/DC converter
2.) IGBT full bridge as part of the inverter
UL 1741
Inverter – Mechanical and technical data
DC Power In (green)
AC Power Out (green)
Error (red)
LC display (2 x 16 characters)
2 keys for display operation
PCB terminals inside the device - Cable routing via PG fittings
-4 ... +104°F
>158°F temperaturedependent power adjustment
>176°F disconnection from the grid
>167°F temperaturedependent power adjustment
>185°F disconnection from the grid
True convection (no fan or blower)
>167°F temperaturedependent power adjustment
>185°F disconnection from the grid
NEMA 3R (IP54) according to EN 60529
< 35dB (soundless)
13 3/8 x 7 7/8 x 17 3/4 in
Aluminum wall-mounted enclosure
13 1/4 x 23 3/4 x 8 3/4 in 13 1/4 x 25 3/4 x 8 3/4 in
30.8 lbs 52.7 lbs 65.7 lbs
KACO Solar Inc. 15 Installation Instructions (US)
curve peak efficiency curve Blue Planet 1501xi blueplanet 2901 xi
100
95
90
125 Vdc
85
80
75
125 Vdc
70
0% 10% 20% 30% 40% 50% 60%
% of Rated Ou tput Power peak efficiency curv e Blue Planet 2901xi
70% 80%
KACO Solar Inc. 16 Installation Instructions (US)
blueplanet 3601xi
100
175 Vdc
95
90
85
80
75
175 Vdc
70
0% 10% 20% 30% 40% 50% 60%
% of Rated Output Power
70%
peak efficiency curve Blue Planet 3601xi
80% 90% 100%
KACO Solar Inc. 17 Installation Instructions (US)
10. UL listing confirmation letter
10.1 UL Certificate of Compliance
KACO Solar Inc. 18 Installation Instructions (US)
KACO Solar Inc. 19 Installation Instructions (US)
KACO Solar Inc. 20 Installation Instructions (US)
KACO Solar Inc. 21 Installation Instructions (US)
KACO Solar Inc. 22 Installation Instructions (US)
KACO Solar Inc. 23 Installation Instructions (US)
10.2 Supplement to Certificate of Compliance
KACO Solar Inc. 24 Installation Instructions (US)
KACO Solar Inc.
1002 B OReilly Ave
San Francisco, CA 94129
T: +1 (415) 931 2046
F: +1 (415) 931 1688 [email protected]
www.kacosolar.com
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