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Operation Manual iMars
INVT Solar Technology (Shenzhen) Co., Ltd.
Preface
The manual is intended to provide detailed information of product information, installation, application, trouble shooting, precautions and maintenance of iMars series grid-tied solar inverters.
The manual does not contain all the information of the photovoltaic system. Please read this manual carefully and follow all safety precautions seriously before any moving, installation, operation and maintenance to ensure correct use and high performance of operation on the inverter.
The use of the iMars series grid-tied solar inverters must comply with local laws and regulations on grid-tied power generation.
The manual needs to be kept well and be available at all times.
All rights reserved. The contents in this document are subject to change without notice.
There may be data deviation because of product improving. Detailed information is in accordant with the final product.
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iMars grid-tied solar inverters Content
Contents
Preface ................................................................................................................................................ 1
Contents ............................................................................................................................................. 2
1 Safety precautions ......................................................................................................................... 5
1.1 Icons ........................................................................................................................................ 6
1.2 Safety guidelines ..................................................................................................................... 6
1.2.1 Delivery and installation ...............................................................................................................7
1.2.2 Grid-tied operation .........................................................................................................................8
1.2.3 Maintenance and inspection ........................................................................................................8
1.2.4 What to do after scrapping ...........................................................................................................9
2 Product overview ......................................................................................................................... 10
2.1 Solar grid-tied power generation system .............................................................................. 11
2.1.1 Supported grid connection structure ...................................................................................... 11
2.2 Products appearance ............................................................................................................ 12
2.2.1 Three-phase inverter .................................................................................................................. 12
2.3 Name plate ............................................................................................................................ 14
2.4 DRM instruction ..................................................................................................................... 15
2.5 Models ................................................................................................................................... 16
2.6 Dimensions and weight ......................................................................................................... 17
3 Storage ........................................................................................................................................... 18
4 Installation ..................................................................................................................................... 19
4.1 Unpacking inspection ............................................................................................................ 20
4.2 Before installation .................................................................................................................. 21
4.2.1 Installation tools ........................................................................................................................... 21
4.2.2 Installation place............................................................................................................................. 22
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iMars grid-tied solar inverters Content
4.2.3 Connection cables........................................................................................................................... 24
4.2.4 Miniature circuit breakers.............................................................................................................. 24
4.3 Mechanical installation .......................................................................................................... 25
4.3.1 Installation of three-phase inverter .............................................................................................. 25
4.4 Electrical installation.............................................................................................................. 28
4.4.1 Connection of solar modules ......................................................................................................... 29
4.4.2 AC connection of 12kW / 15kW / 17kW / 20kW / 25kW / 30kW inverter ................................. 30
5 Operation ......................................................................................................................................... 33
5.1 Inspection before operation .................................................................................................. 34
5.2 Grid-tied operation ................................................................................................................ 34
5.3 Stopping................................................................................................................................. 35
5.4 Daily maintenance ................................................................................................................. 35
5.4.1 Regular maintenance ..................................................................................................................... 35
5.4.2 Maintenance guide ......................................................................................................................... 36
6 Display panel .................................................................................................................................... 39
6.1 LED indicators ....................................................................................................................... 40
6.2 Operation panel ..................................................................................................................... 41
6.3 LCD screen............................................................................................................................ 41
6.4 Functions operation ............................................................................................................... 42
6.4.1 Monitoring parameters .................................................................................................................. 42
6.4.2 History ............................................................................................................................................. 43
6.4.3 Statistics .......................................................................................................................................... 44
6.4.4 Parameter settings ......................................................................................................................... 44
6.4.5 System Information ........................................................................................................................ 51
6.4.6 Faults ............................................................................................................................................... 51
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iMars grid-tied solar inverters Content
6.4.7 Inverter control ............................................................................................................................... 51
6.4.8 Mode settings ................................................................................................................................. 52
6.5 Grid Certification Choice ....................................................................................................... 53
7 Monitoring communication............................................................................................................... 55
7.1 Standard communication ...................................................................................................... 56
7.2 Optional communication ....................................................................................................... 57
7.3 RS485-DRM ports ................................................................................................................. 58
8 Troubleshooting ............................................................................................................................... 59
9 Contact us......................................................................................................................................... 63
10 Technical parameters ...................................................................................................................... 64
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iMars grid-tied solar inverters Safety precautions
1 Safety precautions
iMars series grid-tied solar inverters are designed and tested strictly in accordance with relevant international safety standards. As an electrical and electronic device, all relevant safety regulations must be strictly complied during installation, operation, and maintenance. Incorrect use or misuse may result in ˖ z Injury to the life and personal safety of the operator or other people. z Damage to the inverter or other property belonging to the operator or other people.
In order to avoid personal injury, damage to the inverter or other devices, please strictly observe the following safety precautions.
This chapter mainly describes various warning symbols in operation manual and provides safety instructions for the installation, operation, maintenance and use of the iMars series grid-tied solar inverters.
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iMars grid-tied solar inverters Safety precautions
1.1 Icons
This manual provides relevant information with icons to highlight the physical and property safety of the user to avoid device damage and physical injury.
The icons used in this manual are listed below:
Icons Name Instruction Abbreviation
Danger
Warning
Do not
Hot sides
Note
Danger
Warning
Do not
Serious physical injury or even death may occur if not follow the relative requirements
Physical injury or damage to the devices may occur if not follow the relative requirements
Damage may occur if not follow the relative requirements
Hot sides
Sides of the device may become hot. Do not touch.
Note
Physical hurt may occur if not follow the relative requirements
Note
1.2 Safety guidelines
z The first thing after receiving is to check for any visible damage to the package or to the inverter. If there is something suspected, contact the shipping company and local dealer before installing. z Only qualified electricians are allowed to operate on the inverter. z Do not carry out any wiring and inspection or changing components when the power supply is applied. Hazardous voltages may still be present in the inverter even if the AC and DC main switches are switched off. Wait at least 5 minutes after switching off the inverter. This ensures that the capacitors are electrically discharged. z This product can cause a residual current in the external protective earth conductor. Where a residual current-operated protective (RCD) or monitoring
(RCM) device is strongly recommend to used for protection in a case of direct or indirect contact, only an RCD or RCM of Type B is allowed on the supply side of this product.
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iMars grid-tied solar inverters Safety precautions z Ensure that there is no electromagnetic interference from other electrical and electronic equipments on the installation site. z Do not refit the inverter unauthorized. z All the electric installation needs to be compliance with the national or local laws and standards. z The temperature of individual parts or the enclosure of the inverter
– especially the heat sink may become hot in normal operation. There is a danger of burning.
Do not touch. z Do not open the cover of inverters unauthorizedly. The electrical parts and components inside the inverter are electrostatic. Take measurements to avoid electrostatic discharge during relevant operation. z The inverter must be reliably grounded.
z Ensure that DC and AC side circuit breakers have been disconnected and wait at least 5 minutes before wiring and checking.
Note: Technical personnel who can perform installation, wiring, commissioning, maintenance, troubleshooting and replacement of the iMars series grid-tied solar inverters must meet the following requirements: z Operators need professional training. z Operators must read this manual completely and master the related safety precautions. z Operators need to be familiar with the relevant safety regulations for electrical systems. z Operators need to be fully familiar with the composition and operating principle of the entire grid-tied photovoltaic power generation system and related standards of the countries/regions in which the project is located. z Operators must wear personal protective equipment.
1.2.1
Delivery and installation
z Keep the package and unit complete, dry and clean during storage and delivery. z Please remove and install the inverter with two or more people, because of the inverter is heavy. z Remove and install the inverter with appropriate tools to ensure safe and normal operation and avoid physical injury or death. The people also need mechanical
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iMars grid-tied solar inverters Safety precautions protective measures, such as protective shoes and work clothes. z Only qualified electricians are allowed to install the inverter. z Do not put and install the inverter on or close to combustible materials. z Keep the installation site away from children and other public places. z
Remove the metal jewelry such as ring and bracelet before installation and electrical connection to avoid electric shock. z Do cover solar modules with light-tight materials. Exposed to sunlight, solar modules will output dangerous voltage. z The inverter input voltage does not exceed the maximum input voltage; otherwise inverter damage may occur. z The positive and negative pole of solar modules can not be grounded, otherwise irrecoverable damage may occur. z Ensure the proper grounding of the inverter, otherwise, improper connection or no grounding may cause stop of the inverter. z
Ensure reliable installation and electrical connection. z When the photovoltaic generator cells are exposed to light (even if it is dim), the generator supplies DC voltage to the inverter.
Note: iMars grid-tied solar inverters are only for crystalline silicon solar modules.
1.2.2 Grid-tied operation
z Only qualified electricians are allowed to operate the inverter under the permission of local power departments. z All electrical connections must meet the electrical standards of the countries/regions in which the project is located. z Ensure reliable installation and electrical connection before operation. z Do not open the cover of inverter during operation or voltage is present.
1.2.3 Maintenance and inspection
z Only qualified electricians are allowed to perform the maintenance, inspection, and components replacement of the inverter. z Contact with the local dealer or supplier for maintenance. z In order to avoid irrelevant personnel from entering the maintenance area during
8
iMars grid-tied solar inverters Safety precautions maintenance, temporary warning labels must be placed to warn non-professionals to enter or use fence for isolation. z Firstly disconnect all power supplies of the grid to the inverter before any maintenance, and then disconnect the breakers and wait for at least 5 minutes until the inverter is discharged before maintenance. z Please follow electrostatic protection norms and take correct protective measures because of the electrostatic sensitive circuits and devices in the inverter. z Do not use parts and components not provided by our company during maintenance.
DŽ z Restart the inverter after settling the fault and problem which may affect the safety and performance of the inverter. z Do not get close to or touch any metal conductive part of the grid or inverter, otherwise electric shock, physical injury or death and fire may occur. Please do not ignore the warning icons and instructions with
“ electric shock
”
.
1.2.4 What to do after scrapping
z Do not dispose of the inverter together with household waste. The user has the responsibility and obligation to send it to the designated organization for recycling and disposal.
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iMars grid-tied solar inverters Product overview
2 Product overview
This chapter mainly describes the appearance, packaging accessories, name plate, technical parameters and other information of iMars grid-tied solar inverters.
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iMars grid-tied solar inverters Product overview
2.1 Solar grid-tied power generation system
The photovoltaic grid-tied power generation system consists of solar modules, grid-tied inverter, metering devices and public grid.
Figure 2.1 Application of iMars grid-tied solar inverters
Grid-tied solar inverter is the core of photovoltaic power generation system. The solar energy can be converted into DC electric energy through solar modules and then be changed into sinusoidal
AC energy which has the same frequency and phase with the public grid by grid-tied solar inverters, and then be fed to the grid.
iMars grid-tied solar inverters are only applied in solar grid-tied power generation system and its
DC input are only composed of crystalline silicon solar modules whose negative and positive poles are not grounded. z The recommended solar modules need to comply with IEC61730 Class A rating.
z iMars grid-tied solar inverters are only for crystalline silicon solar modules.
2.1.1 Supported grid connection structure
iMars series grid-tied solar inverters support TN-S, TN-C, TN-C-S , TT and IT grid connection.
When applied to the TT connection, the N-to-PE voltage should be less than 30V.
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iMars grid-tied solar inverters Product overview
Figure 2.2 Type of grid
2.2 Products appearance
2.2.1 Three-phase inverter
Figure 2.3 Products appearance of 12~17kW
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iMars grid-tied solar inverters Product overview
11
12
13
14
15
7
8
9
10
Figure 2.4 Products appearance of 20~30kW
Table 2-1 Parts instruction of Three-phase grid-tied solar inverter
No. Name Instruction
1
2
Cover
Operational panel LED indicators, LCD screen and buttons
5
6
3
4
Communication port
DC input port
Communication port
AC terminal
DRM communication port
For the connection of solar modules
RS485 and EXT communication port
For the connection of AC output
Installation hanger
Fan mounting plate
Concave handle
Safety precautions
Name plate
External grounding hole
Air duct
Screw holes
Cooling chamber
For the connection of inverter and installation bracket
Air inlet, and for fans fixing
For removing and carrying
For rated parameters of the inverter
For ventilation
To fasten the inverter on the installation bracket
Protect the radiator and fan
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iMars grid-tied solar inverters Product overview
2.3 Name plate
After receiving, please check the information of name plates are the ordered one. If not, please contact with the supplier as soon as possible.
Figure 2.5
Name plate
˄ 1 ˅ Trademark and product type
˄ 2 ˅ Model and important technical parameters
˄ 3 ˅ Certification system of the inverter confirming
˄ 4 ˅ Serial number, company name and country of origin
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iMars grid-tied solar inverters Product overview
Icons Instruction z TUV certification mark. The inverter is certified by TUV. z CE certification mark. The inverter complies with the CE directive. z CQC certification mark. The inverter is certified by CQC. z EU WEEE mark. Cannot dispose of the inverter as household waste.
2.4 DRM instruction
Figure 2.6 DRM label
Table 2-2 DRMs instruction
No. Mode Requirement
1 DRM0 Operate the disconnection devise
2 DRM1 Do not consume power
3 DRM2 Do not consume at more than 50% of rated power
4 DRM3
Do not consume at more than 75% of rated power AND Source reactive power if capable
5 DRM4 Increase power consumption(subject to constraints from other active DRMs)
6 DRM5 Do not generate power
7 DRM6 Do not generate at more than 50% of rated power
8 DRM7
Do not generate at more than 75% of rated power AND Sink reactive power if capable
9 DRM8 Increase power generation(subject to constraints from other active DRMs)
Note: Our product only realize the DRM0 function
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iMars grid-tied solar inverters Product overview
2.5 Models
Table 2-3 Models of iMars grid-tied solar inverter
Product name Model
Three-phase (L1, L2, L3, N, PE)
Three-phase grid-tied solar inverter
Three-phase grid-tied solar inverter
Three-phase grid-tied solar inverter
Three-phase grid-tied solar inverter
Three-phase grid-tied solar inverter
Rated output power
Three-phase grid-tied solar inverter
Note: Refer to the product specifications in chapter 10 for detailed information.
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iMars grid-tied solar inverters Product overview
2.6 Dimensions and weight
Figure 2.7 Inverter dimensions
Table 2-4 Inverter dimension and net weight
Model
12kW / 15kW/ 17kW
H
(mm)
610
W
(mm)
480
20kW / 25kW / 30kW 660 520
D
(mm)
230
250
Net weight
(kg)
36
53
D
H
W
Figure 2.8
Paper packages dimension
Table 2-5 Packages dimension and gross weight
Model
H
(mm)
W
(mm)
D
(mm)
Gross weight
(kg)
12kW / 15kW/ 17kW 788 622 396 43
20kW / 25kW / 30kW 850 665 410 62
Packaging
Material
Paper
Paper
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iMars grid-tied solar inverters Storage
3 Storage
If the inverter is not put into use immediately, the storage of inverter should meet the following requirements: z Do not remove the outer packing. z The inverter needs to be stored in a clean and dry place, and prevent the erosion of dust and water vapor. z The storage temperature should be kept at -40°C~+70°C, and the relative humidity should be kept at 5%RH~95%RH. z The stacking of inverters is recommended to be placed according to the number of stacking layers in the original shipment. Place the inverter carefully during stacking to avoid personal injury or equipment damage caused by the falling of equipment. z Keep away from chemically corrosive substances that may corrode the inverter. z Periodic inspections are required. If damages are found by worms and rats, or packaging are found to be damaged, the packaging materials must be replaced in time.
After long-term storage, inverters need to be inspected and tested by qualified personnel before put into use.
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iMars grid-tied solar inverters Installation
4 Installation
This chapter describes how to install the inverter and connect it to the grid-tied solar system
(including the connection between solar modules, public grid and inverter).
Read this chapter carefully and ensure all installation requirements are met before installation.
Only qualified electricians are allowed to install the inverter.
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iMars grid-tied solar inverters Installation
4.1 Unpacking inspection
I Inspect the information of the order and the name plate to ensure the product are the ordered one and no damage to the package. If any problem, contact the supplier as soon as possible.
Put the inverter into the package if not used and protect it from humidity and dust.
Check as following after unpacking:
(1) Ensure no damage to the inverter unit.
(2) Ensure the operation manual, port and installation accessories in the package.
(3) Ensure no damage or loss to the items in the package.
(4) Ensure the information of the order are the same as that of the name plate.
Below are the detailed lists:
Packing list of 12kW / 15kW/ 17kW inverter:
6
7
4
5
No.
1
2
3
8
9
Figure 4.1 Packing list of 12kW / 15kW/ 17kW inverter
Table 4-1 Detailed delivery list of 12kW / 15kW / 17kW inverter
Name
12kW / 15kW / 17kW inverter
Installation bracket operation manual
Communication connector
DC connector
Expansion bolts M8*60
Hex combination bolt
Screws M6*16
Ring terminal
Quantity
1
1
1
2
2
6
6
2
5
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iMars grid-tied solar inverters Installation
Packing list of 20kW / 25kW / 30kW inverter:
Figure 4.2 Packing list of 20kW / 25kW / 30kW inverter
Table 4-2 Detailed delivery list of 20kW / 25kW / 30kW inverter
No.
1
2
Name
20kW / 25kW / 30kW inverter
Installation bracket
5
6
3
4
7
8 operation manual
Communication connector
DC connector
Expansion bolts M8*60
Hex combination bolt
Screws M6*16
9 Ring terminal
4.2 Before installation
4.2.1 Installation tools
Table 4-3 Tools list
No. Installation tools
1 Marking pen
2
3
4
Electrodrill
Hammer
Monkey wrench
Instruction
Mark the installation hole
Drill in the bracket or wall
Hammer on the expansion bolts
Fix the installation bracket
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Quantity
1
1
1
2
2
6
6
2
5
iMars grid-tied solar inverters Installation
No.
5
6
7
8
9
10
Installation tools
Allen driver
Straight screwdriver
Megger
Multimeter
Electric iron
Wire crimper
Instruction
Fasten the screws, remove and install AC wiring box
For AC wiring
Measuring insulation performance and impedance
Check the circuit and AC and DC voltage
Weld communications cable
Crimp DC terminals
11 Hydraulic clamp
4.2.2 Installation place
Crimp ring terminal for AC wiring
Select installation site according to below requirements:
(1) The height of the installation position should ensure that the line of sight is at the same level as the LCD for viewing the parameters inverter conveniently.
Figure 4.3 Optimal mounting height
(2) The installation site must be well ventilated and away from raindrops or direct sunlight.
(3) There must be enough pre-reserved space around the installation site for convenient installation and disassembly of the inverter and air convection, as shown in Fig 4.4.
Fig 4.4 Installation spacing
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iMars grid-tied solar inverters Installation
When install more than one inverter, it is necessary to reserve a certain space between the inverters. The left and right spacing is shown as Figure 4.5, and the upper and lower sides of the inverter should have sufficient space to ensure good heat dissipation.
Figure 4.5 Side-by-side installation space requirements
(4) The ambient temperature of installation should be -25°C~60°C
(5) The installation site should be away from electronic devices which can generate strong electromagnetic interference
(6) The inverter should be installed on firm and solid surface eg wall surface and metal bracket
(7) The installation surface should be vertical to the horizontal line, as shown in Figure 4.6
Install the inverter vertically or backward İ 15 e to facilitate heat dissipation.
Do not tilt the inverter forward, horizontal, upside down, over- backward, and roll when install the inverter.
Fig 4.6 Installation position of the inverter
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iMars grid-tied solar inverters Installation
(8) The installation should ensure that the inverter is reliably grounded, and the material of grounded metal conductor should be consistent with the metal material reserved for the grounding of the inverter. z Do not remove any part and component of the inverter unintended; otherwise damage to the device and physical injury may occur.
4.2.3 Connection cables
The user can select connection cable according the table below:
Table 4-4 Cable specifications
DC side
Model
12kW /15kW / 17kW
20kW / 25kW
30kW
Cross-section
(length ≤ 50m)
4
4
4
mm ϡ
Cross-section
(length >50m) mm ϡ
6
6
6
AC side
Mini cross-section mm ϡ
L N/PE
6
8
10
4
4
6
4.2.4 Miniature circuit breakers
It is recommended strongly to install circuit breakers or fus es at the DC input and AC output to ensure safe installation and running. z In order to protect the PCE, user and installer, external DC and AC circuit breaker shall be equipped at the end-use application; z The wiring shall be according local electric code. Choose proper cable for power input and output lines. Input and output cable shall be PV private cables suitable for outdoor use.
Table 4-5 Breakers specifications
Model
12kW
DC input
Recommended DC breakers
(optional for length >100m)
DC1000V, C32A, 2P
15kW
17kW
20kW
DC1000V, C32A, 2P
DC1000V, C32A, 2P
DC1000V, C40A, 2P
25kW
30kW
DC1000V, C40A, 2P
DC1000V, C50A, 2P
AC output
Recommended AC breakers
AC400V, C25A, 4P
AC400V, C32A, 4P
AC400V, C35A, 4P
AC400V, C50A, 4P
AC400V, C63A, 4P
AC400V, C63A, 4P
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iMars grid-tied solar inverters Installation
4.3 Mechanical installation
Since the installation place can be made by different construction materials, the inverter can be installed by different mounting methods. Take the typical installation environment as the example, the manual describes how to install the inverter on concrete wall. And because of different structure, the three-phase inverter has different instillation modes.
The inverter should be mounted in a vertical position of 90°to the horizontal line as shown in figure
4.7.
4.3.1 Installation of three-phase inverter
Figure 4.7 Installation bracket of 12kW / 15kW/ 17kW/ 20kW / 25kW / 30kW
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iMars grid-tied solar inverters Installation
Table 4-6 Instruction of installation bracket
Model
A(mm)
Installation hole
B(mm)
12kW / 15kW/ 17kW / 20kW / 25kW / 30kW 400 400
Installation steps of three-phase inverter:
(1) Use the wall hanging plate in the packing box to determine the hole position θ As shown in
Figure 4.8. Level the holes with a level ruler and mark it with a marking pen.
Figure 4.8 Mark the punch position
(2) Drill 6 installation holes on the wall with electric drill. As shown in Figure 4.9.
Figure 4.9 Drilling
(3) Fix the expansion bolts to the 4/6 installation holes with hammer, as shown in Figure 4.10.
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iMars grid-tied solar inverters Installation
Figure 4.10 Install expansion bolts
(4) Fix the installation bracket onto the expansion bolts and ensure the installation is firm enough(tightening torque is 13N Ь m) . As shown in Figure 4.11.
Figure 4.11 Fix the installation bracket
(5) Hang the inverter onto the installation bracket and ensure the installation is firm enough .
As shown in Figure 4.12.
Figure 4.12 Installation of inverter
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iMars grid-tied solar inverters Installation
(6) Ensure the inverter is installed properly and tighten the M6X16 bolts into the screw holes on the left and right side of inverter(tightening torque is 4N Ь m). As shown in Figure 4.13.
Figure4.13 Installation of M6X16 bolts
4.4 Electrical installation
This section proposes to describe detailed electrical installation and related safety instructions.
Note
Figure 4.14 Block diagram of the grid-tied solar system z Improper operation during the wiring process can cause fatal injury to operator or unrecoverable damage to the inverter. Only qualified personnel can perform the wiring work. z All electrical installations must be in accordance with local and national electrical codes. z All cables must be firmly attached, undamaged, properly insulated and adequately dimensioned. z It is not allowed to close the AC and DC breakers before the inverter is electrically connected. z Read and follow the instructions provided in this section while observing all safety warnings. z Always note the rated voltage and current defined in this manual. Never exceed the limits.
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iMars grid-tied solar inverters Installation
4.4.1 Connection of solar modules
2 2
2 2
1 1
3 3
5
4 4
5
Figure 4.15 Connection between DC connector and solar modules
Connection steps:
(1) Lighting, short-circuit and other protection measures which meet the local electrical safety laws and regulations are needed before the AC connection; z Only qualified cables under the local electrical safety laws and regulations are allowed to connect.
(2) Connect the output cables of solar modules to the DC connector as figure 4.15 shows.
Loose the nut of connector and remove the isolation layer of the DC cable for about 15mm.
Insert it into the connector and press until heart the lock sound. Finally fasten the nut to a torque of 2.5-3 Nm. The wiring of negative pole is the same as that of the positive pole.
Ensure the poles of solar modules are well connected with the connectors;
(3) After the DC connector is connected, use a multimeter to measure the voltage of the DC input string, verify the polarity of the DC input cable, and ensure that the voltage of each string is within the allowable range of the inverter, as shown in Figure 4.16.
Figure 4.16 DC input voltage measuring
29
iMars grid-tied solar inverters Installation z The solar modules connected with the inverter needs to be the configured ones other than some connecting devices without authorized. Otherwise, device damage, unstable operation or fire may occur.
(4) Connect the DC connector with the inverter and ensure tightly-fastened;
(5) Insert the screw-driver into the hole of the connector to remove the connector form the inverter.
(6) Unclench the pressed cover with screw-driver to remove the cables from the connector.
4.4.2 AC connection of 12kW / 15kW / 17kW / 20kW / 25kW / 30kW inverter
Table4-7 Port instruction of12kW / 15kW/ 17kW /20kW / 25kW / 30kW AC connector
AC connector Three-phase Remark
L1 L1 (A)
L2
L3
N
L2 (B)
L3 (C)
N neutral wire
PE grounding wire
Connection steps of 12kW / 15kW/ 17kW / 20kW / 25kW / 30kW inverter:
Must be connected
(1)Lighting, short-circuit and other protection measures which meet the local electrical safety laws and regulations are needed before the AC connection; z Only qualified cables under the local electrical safety laws and regulations are allowed to connect. z Only with the permission of the local electric power company can the inverter be connected to the utility grid.
(2) Disassemble the waterproof cover of the three-phase inverter AC junction box, as shown in
Figure 4.17;
Figure 4.17 Unpacking the waterproof cover
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iMars grid-tied solar inverters Installation
(3) Remove the fixing screws of AC terminal rail, as shown in Figure 4.18.
Figure 4.18 Remove fixing screws of the rail
(4) Pull out the AC terminal rail as shown in Figure 4.19.
Figure 4.19 Pull out the rail
(5) Crimp the five wires(L1 ǃ ǃ ǃ PE) of the three-phase utility grid and the OT terminals firmly to ensure that the conductor of the wire is not exposed, as shown in Figure 4.20;
Figure 4.20 Wire crimp terminal
(6) The connection of AC cable and the connector should be correct and the screws are tightened.
The tightening torque is 2N•m, as shown in Figure 4.21.
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iMars grid-tied solar inverters Installation
Figure 4.21 Connection of wire and connector
(7) Push the AC terminal rail into the inside of the case and fix the rail with screws. Then lock the waterproof cover of the junction box with the fixing screws. The tightening torque is 1.5 N•m.
Finally, tighten the waterproof connector to complete the waterproofing of the cable, as shown in
Figure 4.22.
Figure 4.22 Fix the waterproof cover of junction box
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iMars grid-tied solar inverters Operation
5 Operation
This chapter describes detailed operation of the inverter which involves the inspection before operation, grid-tied operation, stopping and daily maintenance of the inverter.
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iMars grid-tied solar inverters Operation
5.1 Inspection before operation
Check as follows before operation (including but not limited to):
(1) Ensure the installation site meet the requirement mentioned in section 4.2.2 for easy installation, removing, operation and maintenance;
(2) Ensure the mechanical installation meet the requirement mentioned in section 4.3;
(3) Ensure the electrical installation meet the requirement mentioned in section 4.4;
(4) Ensure all switches are “ off ” ;
(5) Ensure the voltage meet the requirement mentioned in chapter 10;
(6) Ensure all electrical safety precautions are clearly-identified on the installation site. z Do check as above before any operation if the system or inverter needs to be installed, refitted and maintained.
5.2 Grid-tied operation
Note z When power on the inverter for the first time, please refer to section 6.5 to complete grid certification choice. z Keep the inverter power on at least 30 minutes to charge for the internal clock battery.
Please start the inverter as follows:
(1) Ensure the requirements mentioned in section 5.1 are met;
(2) Switch on the breakers at the AC side;
(3) Switch on the integrated DC switch;
(4) Switch on the switch on the DC side;
(5) Observe the LED indicators and information displayed on the screen. Refer to chapter 6 for detailed information.
(6)
Run
Green indicator blinks, others off: the inverter is power on and in
(7) self-inspection;
Run Green indicator on, others off: the inverter is in power generation after self-inspection----successful commissioning.
(8) “ Warn ” or “ Fault ” indicators are on or blinking: the inverter is power on, but fault occurs. Please refer to section 6.3 for detailed information, and then stop as the section 5.3 mentioned, finally settle the problems as chapter 8. If all faults are solved, do as chapter 5 mentioned.
(9) Refer t o section 6.4.4 to set the inverter time according to local time.
(10) The default DC input mode is “ independent ” . Please refer to section 6.4.4 for inquiry and detailed setting.
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iMars grid-tied solar inverters Operation
5.3 Stopping
Stop the inverter as follows it needs maintenance, inspection and troubleshooting:
(1) Switch off the breakers at the AC side;
(2) Switch off the integrated DC switch;
(3) Switch off the switch on the DC side;
(4) Wait at least 5 minutes until the internal parts and components are discharged. And then stop the inverter.
5.4 Daily maintenance
The inverter can perform power generation, start and stop automatically even the day and night shifts and seasons change in one year. In order to prolong the service life, daily maintenance and inspection are needed besides following the instructions mentioned in this manual seriously.
5.4.1 Regular maintenance
Maintenance contents
Store the operation data
Check inverter operation status
Clean the surface
Check electrical connection
Maintenance methods
Maintenance cycle
Use real-time monitoring software to read inverter running data, regularly back up all inverter running data and stats. Check the monitoring software and inverter LCD screen to make sure the parameters are set correctly.
Check to make sure the inverter installation is solid, no damage or deformation. When inverter running, check to make sure the sound and variables are normal. When inverter running, use thermal imager to check whether the case cooling is normal.
Check the ambient humidity and dust around inverter, clean the inverter when necessary.
See Section 5.4.2.
Check the cable connection and inverter terminals, make sure they are connected reliably, not loose, and no damage, insulation reliable.
Once each quarter
Every six months
Every six months
Every six months
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iMars grid-tied solar inverters Operation
Maintenance contents
Maintenance methods
Maintenance and replace fan
Check the security features
Check the fans of three-phase inverter to make sure out of wind is normal, the sound is normal, the fan blades are no cracks, power lines and control signal lines are not damaged. If necessary, clean the air inlet and outlet; If not running properly, the fan must be replaced, see
Section 5.4.2.
Check the off-on feature of inverter: use monitoring software or LCD and keyboard on the inverter, do "off" and "on" operation, to confirm its off-on feature intact. At the same time, make sure monitoring software can normally communicate with the inverter. Check the warning label on or around the inverter, if necessary replaced.
5.4.2 Maintenance guide
Maintenance cycle
Every six months
Every six months
Clean the inverter
Cleaning procedure is as follows:
(1) Disconnect the input and output switches.
(2) Wait ten minutes.
(3) Use a soft brush or a vacuum cleaner to clean the surface and the inlet and outlet of the inverter.
(4) Repeat Section 5.1 operating content.
(5) Restart the inverter.
Clean the fans
Cleaning procedure is as follows:
(1) Disconnect the input and output switches.
(3) Remove the inverter as the reverse steps of Section 4 content.
(4) Remove the cooling chamber or fan mounting plate, as shown in Figure 5.1 and Figure
5.2.
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iMars grid-tied solar inverters Operation
Figure 5.1 Remove the cooling chamber
Figure 5.2 Remove the fan mounting plate
(5) Use soft brush or vacuum cleaner to clean the cooling chamber and the fans.
(6) Assembly the cooling chamber or fan mounting plate into inverter.
(7) Re-install the inverter to its original position as Section 4 of the content.
(8) Repeat Section 5.1 operating content.
(9) Restart the inverter.
Fan Replacement
If the inverter reports over-temperature fault, or non-normal fan operation noise, please replace the fan. This operation must be carried out by professionals. z Inverter should be shut down before maintenance work begins, and disconnect all power inputs. z Wait at least 10 minutes, until the inverter internal capacitors discharge before maintenance work. z Fan replacement must be carried out by professionals.
Fan replacement procedure is as follows:
(1) Disconnect the input and output switches.
(2) Make DC switch to the "OFF" position.
(3) Wait ten minutes.
(4) Remove the inverter as the reverse steps of Section 4 content.
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iMars grid-tied solar inverters Operation
(5) Dismantle the fan mounting plate as shown in Figure 5.2.
(6) Remove the damaged fans, and replace good fans, connect the power lines and control signal lines, as shown in Figure 5.3.
Figure 5.3 Replace fans
(7) Assembly the cooling chamber or fan mounting plate into inverter.
(8) Re-install the inverter to its original position as Section 4 of the content.
(9) Repeat Section 5.1 operating content.
(10) Restart the inverter.
Note z Once the inverter alarms and stops, do not be restarted before all the fault has been ruled out. Checks should be strictly in accordance with Section 5.1 steps.
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iMars grid-tied solar inverters Display panel
6 Display panel
This chapter describes the panel displaying and how to operate on the panel, which involves the
LCD display, LED indicators and operation panel.
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iMars grid-tied solar inverters Display panel
The operation state and parameters can be attained from the LED indicators and LCD display. The displayed content and parameters can also be set or modified by the operation panel.
LCD screen p
A l a r m
V - p v 1 : 0 0 0 . 0 V
I - p v 1 : 0 0 0 . 0 A h
V - p v 2 : 0 0 0 . 0 V
0 1 . A 0 0 1 MENU
LED indicator
Operation panel
Figure 6.1 Operation panel
6.1 LED indicators
There are three LED indicators on the panel:
(1) “ Run ” , operation indicator, green;
(2) “ Warn ” recoverable fault indicator, yellow;
(3) “ Fault ” , unrecoverable fault indicator, red.
The inverter state includes 6 states of stand-by, self-inspection, power generation, recoverable fault and unrecoverable fault; LED indicators are on, off and blinking. Please refer to table 5-1 for detailed state of inverter and LED indicators state.
“ ”: LED indicator is off;
“ ” ( green), “ ” ( yellow), “ ” ( red): LED indicator is blinking at every 0.25S or 0.5S;
“ (Green), “ ” ( yellow), “ ” ( red): LED indicator is on.
Table 6-1 Inverter state and LED indicators
Inverter state LED indicators
Stand-by
Self-inspection
Power generation
Run
Warn
Fault
Run
Warn
Fault
Run
Warn
Fault
Run
Warn
Fault
Description
No power on. All indicators off.
Green indicator blinks in every 0.25s, others off.
Power on and ready for self-inspection
Green indicator keeps on, others off.
Grid-tied power generation.
(1) Grid-tied power generation, but clock fault (A007);
(2) Grid-tied power generation, but DC input fault
(A001 or E001);
(3) Grid-tied power generation ˈ but fan fault(E006 or
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iMars grid-tied solar inverters Display panel
Inverter state LED indicators Description
E012);
Green and yellow indicator keeps on, others off.
Recoverable fault
Unrecoverable fault
Run
Warn
Fault
Run
Warn
Fault
Run
Warn
Fault
Run
Warn
Fault
Inverter stand-by. The public grid fault(A001, A003,
A004, A005or A006);
Yellow indicator blinks in every 0.5s, others off
(2) Inverter stand-by. DC input fault (E001);
Yellow indicator keeps on, others off
Hardware or software fault (E003, E004, E005, E008,
E009, E011, E013 or E015). De-couple the inverter from the system before maintenance.
Red indicator blinks in every 0.5s, others off
Current-leakage or unqualified output power energy of the inverter (E007, E010, E014, E017, E018 or E020).
De-couple the inverter from the system before maintenance.
Red indicator keeps on, others off
Artificial turned off
Run
Warn
Fault
Stop after the communication or panel command. All indicators are on.
Note Please refer to chapter 6 and 8 for detailed fault information and troubleshooting.
6.2 Operation panel
There are 4 buttons on the panel:
(1) “ ESC ” , exit and return ;
(2) “ ” , back to the front page and data increasing;
(3) “ ” ˈ to the next page and data decreasing;
(4) “ ENT ” , enter.
6.3 LCD screen
All information is displayed on the LCD screen. The background illumination of LCD screen will go out to save power if there is not button operation in 15 seconds. But it can be activated by pressing any button. Press “ ENT ” to enter into the main interface if the background illumination is on. All parameters can be viewed and set on the interface.
There are main interface and menu interfaces on the LCD screen, of which the main interface is the default one after power on, while the menu interfaces are used to watch and set parameters or other manual operation, such as viewing the monitoring parameters, history record, system information, statistics and fault information and setting the displayed language, time, communication address, password and factory defaults.
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iMars grid-tied solar inverters Display panel
Curve Graphic
Display Area
Text Parameter
Display Area
Status Area Fault Code Menu
Figure 6.2 Main interface
The main interface of the LCD screen is shown as the figure above:
(1) The curve displays the power changing at the current day;
(2) The words on the screen display the current key parameters of the inverter. Three lines of words are displayed at a time, but if the inverter is in operation or stand-by state, the words are rolling forward at every 3s. And the user can press “ ” or “ ” to look up the information freely;
(3) 5 states of the inverter are displayed on the screen;
(4) If the inverter is in fault or warning state, up to 8 corresponding fault codes can be displaying on the screen.
6.4 Functions operation
Most of the parameters can be viewed and set through the LCD screen and operation panel.
M a i n M e n u
M o n i t P a r a m S e t u p
H i s t o r y S y s t e m I n f o
S t a t i s t i c s F a u l t I n f o
Figure 6.3 Main interface
6.4.1 Monitoring parameters
Press “ ” and “ ” in the main interface to select “Monit P aram” , and then press “ ENT ” to view the parameters which is shown in figure 6.4. Go the front or next page through “ ” and “ ” and return through “ ESC ” .
C u r r e n t S t a t e
E - t o d : 0 W h
$ - t o d : 噉 0 . 0 0
P - i n : 0 . 0 0 k W
Figure 6.4 Monitoring parameters
Different inverter has different parameters. “ ƽ ” in table 6-2 means the monitoring parameters of the inverter can be displayed on the LCD screen.
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iMars grid-tied solar inverters Display panel
Table 6-2 Monitoring parameters
Monitoring content
Total power produced this day(E-tod)
Total power saved this day($-tod)
Input power(P-in)
Output power(P-out)
Peak power(PpDay)
Grid voltage U(VoutU)
Grid voltage V (VoutV)
Grid voltage W (VoutW)
Grid current U (IoutU)
Grid current V(IoutV)
Grid current W(IoutW)
Grid frequency(Fgrid)
Power factor(pf)
Input V 1(V-pv1)
Input I1 (I-pv1)
Input V2(V-pv2)
Input I2(I-pv2)
Grounding resistor(Riso)
Leakage current(Ileak)
Temperature 1(Tinv1)
Temperature 2(Tinv2)
Total power consumption(E-tot)
Total time(h-tot)
Current date(Data)
Current time(Time)
First power-on time of today (Power ON)
First running time of today (Run Time)
Peak power time of today (Ppk Time)
Stop running time of today (Today OFF)
Stop running time of yesterday (Last OFF)
12kW / 15kW / 17kW 20kW / 25kW / 30kW
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
6.4.2 History
Press “ ” and “ ” in the main interface to select “ History ” , and then press “ENT” to view the
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iMars grid-tied solar inverters Display panel parameters which is shown in figure 6.5.
H i s t o r y
2 0 1 2 / 0 1 / 0 5 1 1 : 3 2 : 1 6
A 0 0 5 : G r i d u n d e r f r e q
0
Figure 6.5 History parameters
There are 32 history records in total. Press “ ” and “ ” to review the history record and press
“ ESC ” to exit. The numbers on the top right is the serial No. of the record and the numbers in the second line display date when faults occur and settled. If the color of the third line illuminates, the fault occurs, if not, the fault is solved.
6.4.3 Statistics
Press “ ” and “ ” in the main interface to select “Statistics” , and then press “ENT” to view the parameters which is shown in figure 6.6.
Figure 6.6 Statistic information
The information in table 6-3 can be viewed in the statistical menu.
Table 6-3 Statistic information
Content Detailed
Lifetime
Total operation time, total power produced, total power saved, total CO
2 reduction in lifetime
Day statistics
Total power produced, total power saved, peak power and total CO
2 reduction in current day
6.4.4 Parameter settings
Press “ ” and “ ” in the main interface to select “ Setup Menu ” , and then press “ENT” to view the parameters which is shown in figure 6.7.
A d d r e s s
S e t u p M e n u
D a t e / T i m e
K e y p a d P W D
C a s h / p r i c e
L a n g u a g e
S e t M o d e l
Figure 6.7 Setting information
Parameters can be set in this interface.
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iMars grid-tied solar inverters Display panel
LCD menus: p
Alarm h
V - pv 1 : 000 . 0 V
I - pv 1 : 000 . 0 A
V - pv 2 : 000 . 0 V
01 . A 001 MENU
Address
Setup Menu
Date / Time
Keypad PWD Language
Cash / price Country
Main Menu
Monit Param Setup
History
Statistics
System Info
Fault Info
RS 485 Address
001 1
Current State
E - tod : 0 Wh
$ - tod : 噉 0 . 00
P - in : 0 . 00 kW
User Password
0000 0
History
2012 / 01 / 05 11 : 32 : 16
A 005 : Grid under freq
0
Setup Cash
Val / kWh : 00 . 50 噉 / 1 kWh
Setup Date / Time
Time : 12 : 14 : 30
Lifetime
Statistical Menu
Today
Address
Setup Menu
Date / Time
Keypad PWD Language
Cash / price Set Model
System Information
Part No .
Cert . Area
Serial No .
Soft Ver
Run Param
Fault
1 : A 005 Grid under freq
2 : A 001 Input under Volt
3 :
On / Off
Clear
Restart
Control Menu
Factory
Curr. Language : English
English Dutch
Chinese
German
Country
Germany
England
Australia
: Australia
Greece
Denmark
Holland
Setup Model : Independ
Independ
Parallel
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iMars grid-tied solar inverters Display panel
Table 6-4 Parameters setting
Setting item LCD display
R S 4 8 5 A d d r e s s
RS485
Address
User password
U s e r P a s s w o r d
Instruction
Enter into the interface and edit the data through “ ” or “ ” . And then press
“ ENT ” again to the next bit. After editing the three bits, press
“
ENT
”
to save the edition and press “ ESC ” to exit.
Enter into the interface and edit the data through “ ” or “ ” . And then press
“ ENT ” again to the next bit. After editing the four bits, press “ ENT ” to save the edition and press “ ESC ” to exit.
The default password is “ 0000 ” ; the user can enter into the setting interface without password. If the password is not
“ 0000 ” , the user can enter into the setting interface with password.
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iMars grid-tied solar inverters Display panel
Setting item LCD display
Setup Cash
Setup
Date/Time
Language
Select
Country
Setup mode
S e t u p C a s h
V a l / k W h : 0 0 . 5 0 噉 / 1 k W h
S e t u p D a t e / T i m e
T i m e : 1 2 : 1 4 : 3 0
Curr. Language : English
English Dutch
Chinese
German
Country
Germany
England
Australia
: Australia
Greece
Denmark
Holland
S e t u p M o d e l : I n d e p e n d
I n d e p e n d
P a r a l l e l
Instruction
Enter into the interface and edit the currency type and cash through “ ” or
“ ” . And then press “ ENT ” again to the next line. After editing the four bits, press
“ ENT ” to save the edition and press
“ ESC ” to exit.
The currency types include EUR, POD,
CNY and USD.
Enter into the interface and edit the date and time through “ ” or “ ” . And then press
“
ENT
”
again to the next line. After editing the four bits, press “ ENT ” to save the edition and press “ ESC ” to exit.
ˈ
Enter into the interface and edit the language through “ ” or “ ” . And then press “ ENT ” again to save the edition and press “ ESC ” to exit.
The default language is English.
Enter into the interface and select country through “ ” or “ ” . And then press “ ENT ” again to save the edition and press “ ESC ” to exit.
The DC input mode includes
“ independent ” and “ parallel ” :
“ independent mode ” is the independent
MPPT of Track A and Track B; “ parallel mode ” is the parallel MPPT of Track A and Track B.
The default mode is “ independent ” .
The input mode setting is invisible if the inverter is in power generation. It is only available during DC power on and AC power off.
Press “ ” or “ ” to select the setting mode and press “ ENT ” to save the setting or “ ESC ” to return.
If the situation of section 6.4.8 occurs, it is necessary to switch the DC input to
“ parallel ” mode.
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iMars grid-tied solar inverters Display panel
Setting item Instruction LCD display
Input password
0000
Set power
P-Lmt
Mode
LmtPower
P.Factor
set power
Limit Mode Invalid
Invalid
Auto
Manual
Limit Power
100%
The password is needed when enter into the interface of “Set power”. Get the password from the supplier if necessary.
There are 3 submenus: ķ P-Lmt Mode: invalid (limited power function is invalid),auto (special for single phase) ,manual (set the limit of output value manually); ĸ LmtPower: this function is only valid when the P-Lmt
Mode is manual, the percentage is that of the rated power and the setting range is from 10% to 100%; Ĺ p.Factor: includes normal model (default value
“1”), current advanced mode and current hysteresis mode and the setting rage is
-0.9-0.99.
(the machine of three phase only has the function of Ĺ )
Power Factor
Grid Tied Mode
Normal Mode
Power Factor 1.00
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iMars grid-tied solar inverters Display panel
Setting item LCD display Instruction
Input password
0000
Run Param
UV Volt
Run Param
OV time
UV time
OV Volt
UF Freq
UF time
184V
ACUV Volt(phase volt)
0.20s
ACUV Time
263V
ACOV Volt(phase volt)
ACOV Time
0.20s
47.6Hz
ACUF Freqency
ACUF Time
0.20s
51.4Hz
ACOF Freqency
0.20s
ACOF Time
Password is required when enter into the interface of “Run Param”. Get the password from the supplier if necessary.
Set ACUV Volt, ACUV time and others under the related submenus, and then press “ ” and “ ” to modify, and finally press “ENT” to confirm.
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iMars grid-tied solar inverters Display panel
Setting item Instruction LCD display
Input Password
0000
Run Param*
Run Param
UV volt 1 OV time 1
UV time 1
OV volt 1
UF Freq 1
UF time 1
115V
ACUV Volt(phase volt)
ACUV Time
00.04s
309V
ACOV Volt(phase volt)
00.02s
ACOV Time
47.99Hz
ACUF Frequency
ACUF Time
00.12s
50.50hz
ACOF Frequency
00.12s
196V
ACUV Volt(phase volt)
ACUV Time
0.19s
ACOF Time
252V
ACOV Volt(phase volt)
ACOV Time
01.90s
49.49Hz
ACUF Frequency
ACUF Time
595s
50.2Hz
ACOF Frequency
ACOF Time
115s
Run Restart Time
060s
OFF
ON
Island protect:on
There are 2 protections under
G83/G59(UK) and PEA(Thailand) standards, and there is only one protection under other grid tied standard.
Set ACUV Volt, ACUV time and others under the related submenus, and then press “ ” and “ ” to modify, and finally press “ENT” t o confirm.
Generally, it is only necessary to set
ACUV and ACUF value for ACUV and
ACUF protection. And it is necessary to set ACOF1 and ACOF2 together for
ACOF protection.
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iMars grid-tied solar inverters Display panel
6.4.5 System Information
Press “ ” and “ ” in the main interface to select “ System Information ” , and then press “ENT” to view the parameters which is shown in figure 6.8.
System Information
Part No .
Cert . Area
Serial No .
Run Param
Soft Ver
Figure 6.8 System information
The system information include “ product model ” , “ serial No.
” , “ software version ” and “ certificate version
”
.
S y s t e m V e r
V e r s i o n 1 : V 1 . 0 5
V e r s i o n 2
M C U V e r s i o n
: V 1 . 0 5
: V 1 . 0 5
Figure 6.9 System version
6.4.6 Faults
Press “ ” and “ ” in the main interface to review the fault history, and then press “ENT” to view the sub-menu which is shown in figure 6.10.
F a u l t
1 : A 0 0 5 G r i d u n d e r f r e q
2 : A 0 0 1 I n p u t u n d e r V o l t
3 :
Figure 6.10 Fault information
There are 8 pieces of fault information in the record which is shown in figure 5.10; otherwise it will display “ No Fault!” Refer to section 6.4.2 for more detailed information.
6.4.7 Inverter control
Press “ ” and “ ” in the control interface, and then press “ENT” to view the sub-menu which is shown in figure 6.11.
O n / O f f
C o n t r o l M e n u
F a c t o r y
C l e a r
R e s t a r t
Figure 6.11 Control interface
Refer to the table below for detailed information.
Table 6-5 Inverter control
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iMars grid-tied solar inverters Display panel
Control item
On/Off control
Restart
Record clear
Restore to factory
O N
O F F
LCD display
O n / O f f C t r l
R e s t a r t
P r e s s E N T t o e x e c u t e .
P r e s s E S C t o c a n c e l .
C l e a r a l l R e c o r d : S u r e ˛
P r e s s E N T t o e x e c u t e .
P r e s s E S C t o c a n c e l .
R e s t o r e t o F a c t o r y
P r e s s E N T t o e x e c u t e .
P r e s s E S C t o c a n c e l .
Instruction
Control the “O n/Off ” through the panel.
Press “ ” and “ ” in the control interface to select the operation. Press
“
ENT
”
to ensure the operation and press
“ ESC ” to return.
Restart the inverter through the panel.
And save the all settings and operation record.
Press “ ENT ” to ensure restarting and the inverter will begin to self-inspect or press
“ ESC ” to return.
Press “ ENT ” to ensure clear all records or press “ ESC ” to return.
“
Record clear
”
is to clear all setting parameters through the panel, restore to the factory setting and save all history operation records.
“ Restore to factory ” is to clear all setting parameters and history operation records through the panel, restore to the factory setting. Press “ ENT ” to ensure clear or press “ ESC ” to return.
6.4.8 Mode settings
The default mode of series grid-tied solar inverter is “ independent ” . But if the current of solar modules are joined into the inverter as figure 6.12 shows, it is necessary to switch the mode into
“ parallel ” .
The mode 12kW / 15kW /17kW / 20kW / 25kW / 30kW Please refer to section 6.4.4 for detailed setting.
Note
Figure 6.12 “ Parallel ” input mode z Only where there is more than 100V DC voltage input, LCD display working, and
AC switch off, can query and modify the inverter DC input mode via the LCD screen and keypad.
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iMars grid-tied solar inverters Display panel
6.5 Grid Certification Choice
Power on the inverter by DC input for the first time or after Restore factory settings, it will appear on the LCD screen prompts as follows:
S O L A R I N V E R T E R
I n i t i a l i n g Ă Ă W a i t i n g
> > > > > > >
Waiting a few seconds later, in the LCD screen will appear a list of countries as follows, requiring the user to choose what country of use.
As shown below:
C o u n t r y : U n s e t
Germany
U K
A u s t r a l i a
G r e e c e
D e n m a r k
H o l l a n d
C o u n t r y :
G r e e c e
D e n m a r k
H o l l a n d
U n s e t
C h i n a
T h a i l a n d
Other
Press the
“ ”
or
“ ”
button to navigate the country, press the ENT button to complete the setting.
After determine the location, please follow the user manual required with the proper use of inverter.
The user can change the location through the following ways:
LCD Screen ˖ MENU ė Main Menu: Setup ė Setup Menu: Country ė Country: p
A l a r m
V - p v 1 : 0 0 0 . 0 V
I - p v 1 : 0 0 0 . 0 A h
V - p v 2 : 0 0 0 . 0 V
0 1 . A 0 0 1 MENU
M a i n M e n u
M o n i t P a r a m S e t u p
H i s t o r y
S t a t i s t i c s
S y s t e m I n f o
F a u l t I n f o
A d d r e s s
S e t u p M e n u
D a t e / T i m e
K e y p a d P W D
C a s h / p r i c e
L a n g u a g e
C o u n t r y
C o u n t r y : C h i n a
Germany
UK
G r e e c e
D e n m a r k
A u s t r a l i a H o l l a n d
The user can query the grid certification which has been set through the following ways:
LCD Screen ˖ MENU → Main Menu: System Info → System Information: Cert. Area → Certificate Area p
A l a r m h
V - p v 1 : 0 0 0 . 0 V
I - p v 1 : 0 0 0 . 0 A
V - p v 2 : 0 0 0 . 0 V
0 1 . A 0 0 1 MENU
M a i n M e n u
M o n i t P a r a m
H i s t o r y
S t a t i s t i c s
S e t u p
S y s t e m I n f o
F a u l t I n f o
S y s t e m I n f o r m a t i o n
P a r t N o .
S e r i a l N o .
S o f t V e r
C e r t . A r e a
R u n P a r a m
C e r t i f i c a t e A r e a
A S 4 7 7 7
Comparison Table: Available Countries and their grid certification
53
iMars grid-tied solar inverters Display panel
16
17
18
19
20
21
22
8
9
10
11
12
13
14
15
4
5
6
7
No.
1
2
3
Country
Germany
UK
Australia
Greece
Denmark
Holland
China
Certification
VDE0126& AR-N4105
G83/G59
AS4777
VDE0126
TF321
C10/C11
CQC
Remark
8 Thailand PEA
9 Other VDE0126
Reference Table: Grid Certification and Grid Voltage and Frequency of Some Countries
Three-phase Grid
No. Country Certification voltage frequency
1 Germany
4
5
2
3
6
7
France
Greece
Turkey
Romania
Slovakia
Portugal
VDE0126& AR-N4105 380~400V 50Hz
Poland
Hungary
Switzerland
Austria
Australia
Singapore
New Zealand
Belgium
Luxembourg
Holland
Denmark
AS4777.2&AS4777.3
AS/NZS3100
C10/C11
TF3.2.1
400~415V
380~400V
380~400V
50Hz
50Hz
50Hz
Italy ENEL 400V 50Hz
54
iMars grid-tied solar inverters Monitoring communication
7 Monitoring communication
This chapter describes the communication connection of inverter and monitoring system
(Industrial master, private computers, smart phones and so on).
55
iMars grid-tied solar inverters Monitoring communication
7.1 Standard communication
The standard communication mode of iMars grid-tied solar inverter is RS485 which includes
“
RS485
”
and
“
EXT
”
ports. The two ports can both communicate with private computers, smart phones and so on. The system monitoring solution are shown as figure 7.1.
Figure 7.1 Monitoring system of inverter
Table 7-1 Pins on inverter instruction
Pin on inverter Definition
1 +5VDC
4 GND
56
iMars grid-tied solar inverters Monitoring communication
RS485
1 4
2 3
1 4
2 3
EXT
4 3 2 1
Figure 7.2 RS485 pin on inverter Figure 7.3 Communication connector
Connection steps:
(1) Weld communication cables to the RS485 terminals of the inverter as figure 7.4 shows;
Ensure the cable corresponds to the pin as table 6-1 shows and the welding is tight enough.
Figure 7.4 Detailed connection
(2) According to Table 7-1, connect the communication connector pinout and the user's device, make sure the connection is correct;
(3) Please download the monitoring software
“ iMars WinExpert
”
and its operation instruction on www.invt-solar.com.
7.2 Optional communication
The optional communication modes include Ethernet, WiFi, which also need corresponding communication parts and components. All operation parameters of the inverter are output from port “ RS485/EXT ” , and then to the communication devices, finally after convertering, to the monitoring system of upper PC as standard Ethernet, WiFi signal. See figure 7.1.
Table 7-2 Optional accessories
Optional accessories
Ethernet converter
WiFi converter
GPRS converter
ENET converter
Inverter port
RS485/EXT
RS485/EXT
RS485/EXT
RS485/EXT
57
Port of upper PC
RJ45 plug
WiFi signal
GPRS signal
Ethernet port
iMars grid-tied solar inverters Monitoring communication
Please download the connection instruction, operation manual and commissioning tools on website www.invt-solar.com.
Note: the optional accessories are not standard-configured.
7.3 RS485-DRM ports
Table 7-3 RS485-DRM Pins on inverter instruction
Pin on inverter Colour Definition
Figure 7.5 RS485-DRM pin on inverter Figure 7.6 Connection cable
RS485-DRM connection steps:
(1) Weld communication cables to the RS485-DRM terminals of the inverter as figure 7.6 shows;
Ensure the cable corresponds to the pin as table 7-3 shows and the welding is tight enough.
According to Table 7-3, connect the communication connector pinout and the user's device, make sure the connection is correct.
58
iMars grid-tied solar inverters Troubleshooting
8 Troubleshooting
This chapter describes the fault alarm and fault code for quick troubleshooting.
59
iMars grid-tied solar inverters Troubleshooting
Table 8-1 Fault code
Fault
Message code
A
Instruction Fault analysis
A001
A002
A003
A004
A005
Input UV
Bus UV
Grid UV
Grid OV
Grid UF
Input undervoltage
PV1 undervoltage
PV2 undervoltage
Bus undervoltage DC input
AC undervoltage
AC overvoltage
AC underfrequency
Low voltage of the public grid
High voltage of the public grid
Low frequency of the public grid
A006
A007
A009
A011
Grid OF
Clock Fail
Cmd Shut
Grid Loss
AC overfrequency High frequency of the public grid
Clock alarm
Manual stutdown
The public grid disconnects.
Wrong setting
Stop by the operation panel or upper
PC
Check if inverter AC connection is well
E
E001 Input OV Input overvoltage DC input overvoltage
E003
E004
E005
E006
E007
E008
E009
E010
E011
E012
E013
E014
Bus OV
Boost Fail
Bus overvoltage Internal bus voltage
Voltage-boost fault Voltage-boost fault of the inverter
Grid OC AC overcurrent Internal AC overcurrent
OTP Overtemperature Internal overtemperature
Riso Low
IGBT drv
Low isolation impedance
IGBT drive protection
Low isolation impedance of the external port system
IGBT drive protection of the inverter
Int Comm
ILeek Fail
Internal communication fault
Huge leakage current
Master-slave DSP communication disabled
Error of master-slave DSP check bit
Huge leakage current of the system or inverter
Relay Fault Relay fault Internal relay fault
Fan Fail Fan fault Internal fan fault
Internal memory error
Dc inject High DC injection High DC injection during AC output
60
iMars grid-tied solar inverters Troubleshooting
Fault code
E015
E018
E019
E020
Message
OutputShort
Input OC
Incnst
Instruction
Output short-circuit
Fault analysis
Output short-circuit
Input overcurrent DC input overcurrent
Data consistency fault
Inconsistent grid voltage, frequency, leakage current or AC/DC injection
PowerReversed DC power reversed DC power reversed
61
iMars grid-tied solar inverters Troubleshooting
If any problem, please contact with the supplier and provide following information: z Model of the inverter: ; z
Serial No. of the inverter: ; z System üü version 1: ;
üü version 2: ;
üü MCU software version: ; z Fault code: ; z Fault description .
62
iMars grid-tied solar inverters Contact us
9 Contact us
Shenzhen·China
INVT Solar Technology (Shenzhen) Co., Ltd.
Address: Room 504, No. 7 Building, Gaofa Scientific Industrial Park, Longjing, Nanshan District,
Shenzhen, China
Service hotline: +86 400 700 9997
E-mail: [email protected]
INVT group website: www.invt.com
INVT solar website: www.invt-solar.com
63
iMars grid-tied solar inverters Technical parameters
10 Technical parameters
Table 10-1Technical parameters
Three-phase
Model
BG12KTR BG15KTR BG17KTR BG20KTR
Max. DC voltage (V) 1000 1000 1000 1000
Input(DC)
Output(AC)
System
Others
Starting voltage (V)
MPPT voltage(V)
Operation voltage
(V)
MPPT/strings per
MPPT
Max. DC power (W)
Max. input current
(A)
Isc PV(A)
Max inverter backfeed current to the array
DC switch
Max output power
Voltage(V)/ frequency(Hz)
Max. AC current (A)
Maximum output fault current
AC inrush current
Maximum output overcurrent protection(A)
Power factor
Harmonic distortion
Cooling
Maximum efficiency
European efficiency
MPPT efficiency
Protection degree
200
180~800
350 - 800
12500
19x2
21x2
0A
12000
19.3
38.2
98.20%
97.60%
200
180~800
400 - 800
15600
21x2
23.5x2
0A
47.7
98.30%
97.80%
200
180~800
400 - 800
17500
23×2
25.5×2
0A
54
2/1
Optional
300
280-800
450-800
20800
25X 2
27X 2
0A
BG25KTR
1000
300
280-800
480-800
26000
30 X 2
33 X 2
0A
15000 17000 20000
320~460Vac, 50Hz(47~51.5Hz) / 60Hz(57~61.5Hz)
25000
27.3
32 24.1
250A ˈ 41.6ms
Less than 10 A
63.3
-0.80~+0.80(adjustable)
< 3% (rated power ˅
Air cooling
98.30%
97.80%
98.4%
98.0%
99.9%
IP65
40
472A ˈ 11.04ms
Less than 20 A
79.1
98.4%
98.0%
BG30KTR
1000
300
280-800
480-800
31200
33X 2
36X 2
0A
30000
48
95
98.5%
98.0%
Power consumption
Isolation mode
Protective class
Overvoltage category inverter topology
Pollution degree
Operation temperature
Relative humidity
Max. altitude(m)
< 1W
Transformerless
I
AC:III,PV:II
Non-isolated
3
(-25 ć ~+60 ć ) ˈ derate after 45 ć
4~100%, Condensation
<2000 (derate if the altitude ˚ 2000)
Displaying
Systerm language
LED/ LCD, backlit display
English, Chinese, German, Dutch
RS485 (standard); handheld keypad; WiFi (optional) Communication
DC terminal PV-CF-S / PV-CM-S
<50 Noise dB(A)
Installation mode Wall installation
Grid standard
DIN VDE 0126-1-1 ˖ 2013 ˈ VDE-AR-N 4105 ˖ 2011 ˈ DIN VDE V 0124-100 ˖ 2012 ˈ IEC 61727 ˄ IEC62116 ˅ˈ
AS/NZS 4777.2
˖ 2015 ˈ NB/T32004-2013 ˈ IEC 60068-2-1 ˖ 2007 ˈ IEC 60068-2-2 ˖ 2007 ˈ IEC 60068-2-14 ˖
2009 ˈ IEC 60068-2-30 ˖ 2005 ˈ IEC 61683 ˖ 1999 ˈ C10/11 ˖ 2012
Safe certificate /
EMC category
IEC 62109-1 ˖ 2010 ˈ IEC 62109-2 ˖ 2011 ˈ EN 61000-6-2: 2005 / EN 61000-6-3:2007/A1:2011
Input overvoltage protection, input overcurrent protection, DC isolation monitoring, DC monitoring, grounding fault current monitoring, grid monitoring, island protection, short circuit protection, overheating protection
Protection
64
201807(V1.1)
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