INVT iMars BG6KTR User manual

Operation Manual
iMars
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(SJEUJFE4PMBS*OWFSUFS
INVT Solar Technology (Shenzhen) Co., Ltd.

1
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.

iMarsgrid-tiedsolarinverters Contents
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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
2.2 Products appearance.......................................................................................................................... 13
2.3 Nameplate ............................................................................................................................................. 14
2.4 DRM instruction.................................................................................................................................... 15
2.5 Products modules ................................................................................................................................ 16
2.6 Dimensions and weight....................................................................................................................... 17
3 Storage.............................................................................................................................................18
4 Installation .......................................................................................................................................19
4.1 Unpacking inspection.......................................................................................................................... 20
4.2 Before installation ................................................................................................................................ 20
4.2.1 Installation tools........................................................................................................................... 20

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4.2.2 Installation place ......................................................................................................................... 21
4.2.3 Connection cables...................................................................................................................... 22
4.2.4 Miniature circuit breakers.......................................................................................................... 23
4.3 Mechanical installation........................................................................................................................ 23
4.3.1 Installation of three-phase inverter .............................................................................................. 23
4.4 Electrical installation............................................................................................................................ 26
4.4.1 Connection of solar modules.................................................................................................... 27
4.4.2 AC connection ............................................................................................................................. 29
5Operation..........................................................................................................................................30
5.1 Inspection before operation............................................................................................................... 31
5.2 Grid-tied operation............................................................................................................................... 31
5.3 Stopping................................................................................................................................................. 32
5.4 Daily maintenance ............................................................................................................................... 32
5.4.1 Regular maintenance................................................................................................................. 32
5.4.2 Maintenance guide ..................................................................................................................... 33
6 Display panel....................................................................................................................................36
6.1 LED indicators....................................................................................................................................... 37
6.2 Operation panel.................................................................................................................................... 38
6.3 LCD screen............................................................................................................................................ 39
6.4 Functions operation............................................................................................................................. 40
6.4.1 Monitoring parameters.................................................................................................................. 40
6.4.2 History ............................................................................................................................................. 40
6.4.3 Statistics .......................................................................................................................................... 41

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6.4.4 Parameter settings ......................................................................................................................... 41
6.4.5 System Information........................................................................................................................ 48
6.4.6 Faults ............................................................................................................................................... 48
6.4.7 Inverter control............................................................................................................................... 48
6.4.8 Mode settings ................................................................................................................................. 49
6.5 Grid certification choice...................................................................................................................... 50
7 Monitoring communication...............................................................................................................53
7.1 Standard communication.................................................................................................................... 54
7.2 Optional communication..................................................................................................................... 56
7.3 RS485-DRM ports................................................................................................................................ 56
8 Troubleshooting ...............................................................................................................................58
9 Contact us.........................................................................................................................................62
10 Technical parameters......................................................................................................................63

iMarsgrid-tiedsolarinverters Safety precautions
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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˖
zInjury to the life and personal safety of the operator or other people.
zDamage 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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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 N
ame
Instruction
Abbreviation
Danger
Danger
Serious physical injury or even death may
occur if not follow the relative requirements
Warning
Warning
Physical injury or damage to the devices
may occur if not follow the relative
requirements
Donot
Donot
Damage may occur if not follow the relative
requirements
Hot
sides
Hot
sides
Sides of the device may become hot. Do not
touch
Note
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.
zOnly qualified electricians are allowed to operate on the inverter.
zDonot
carry out any wiring and inspection or changing components when the
power supply is applied.
zThis 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 be 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.
zEnsure that there is no electromagnetic interference from
other electrical and
electronic equipments on the installation site.
zDo not refit the inverter unauthorized.

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zAll the electric installation needs to be compliance with the national or local
laws and standards.
zThe 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.
zDo not open the cover of inverters unauthorized. The electrical parts and
com
ponents inside the inverter are electrostatic. Take measurements to avoid
electrostatic discharge during relevant operation.
zThe inverter must be reliably grounded.
zEnsure
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:
zOperators need professional training.
zOperators 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.
zOperators must wear personal protective equipment.
1.2.1 Delivery and installation
zK
eep the package and unit complete, dry and clean during storage and delivery.
zP
lease remove and install the inverter with two or more people, because of the
inverter is heavy.
zRemove and install the inverter with appropriate tools to ensure safe and
normal
operation and avoid physical injury or death. The people also need m
echanical
protective measures, such as protective shoes and work clothes.
zOnly qualified electricians are allowed to install the inverter.
zDo not put and install the inverter on or close to combustible materials.

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zKeep the installation site away from children and other public places.
zRemove the metal jewelry such as ring and bracelet before installation and
electrical connection to avoid electric shock.
zDo cover solar modules with light-tight materials. Exposed to sunlight, solar
modules will output dangerous voltage.
zThe inverter input voltage does not exceed the maximum input voltage;
otherwise inverter damage may occur.
zThe positive and negative pole of solar modules can not be g
rounded, otherwise
irrecoverable damage may occur.
zEnsure the proper grounding of the inverter
, otherwise, improper connection or
no grounding may cause stop of the inverter.
zEnsure reliable installation and electrical connection.
zWhen the photovoltaic g
enerator cells are exposed to light (even if it is dim), the
generator supplies DC voltage to the inverter.
Note: iMars series grid-tied solar inverters are only for crystalline silicon solar modules.
1.2.2 Grid-tied operation

zOnly qualified electricians are allowed to operate the inverter under the
permission of local power departments.
zAll electrical connections must meet the electrical standards of the
countries/regions in which the project is located.
zEnsure reliable installation and electrical connection before operation. 
zDo not open the cover of inverter during operation or voltage is present. 
1.2.3 Maintenance and inspection

zOnly qualified electricians are allowed to perform the maintenance, insp
ection,
and components replacement of the inverter.
zContact with the local dealer or supplier for maintenance.
zIn order to avoid irrelevant personnel from entering the maintenance area
during
maintenance, temporary warning labels must be placed to warn
non-professionals to enter or usefence for isolation.
zFirstly disconnect all power supplies of the grid to the inverter before any
maintenance, and then disconnect the breakers and w
ait for at least 5 minutes
until the inverter is discharged before maintenance.

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zPlease follow electrostatic protection norms and take correct protective
measures because of the electrostatic sensitive circuits and devices in the
inverter.
zDo not use parts and components not provided by our company during
maintenance.
zRestart the inverter after settling the fault and problem which may affect the
safety and performance of the inverter. 
zDo 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. P
lease 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 tosend it
to the designated organization for recycling
and disposal.

iMarsgrid-tiedsolarinverters Product overview
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2 Product overview
This chapter mainly describes the appearance, packaging accessories, nameplate, technical
parameters and other information of iMars series grid-tied solar inverters.

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2.1 Solar grid-tied power generation system
2.1.1 Application
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 series 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 series 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.
zThe recommended solar modules need to comply
with IEC61730 Class Arating.
ziMars series grid-tied solar inverters are only for crystalline silicon solar
modules.
2.1.2 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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Figure 2.2Type of grid

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2.2 Products appearance
Figure 2.3 Products appearance
Table 2-1 Parts instruction
No.
Name Instruction
1
C
over
2
O
perational panel
L
CD indicators
3
Communication port
DRM
Communication port
4
DC input port
F
or the connection of solar modules
5
Communication port
RS485 and EXT communication port
6
AC terminal
F
or the connection of AC output
7
Cooling chamber
8
R
adiator
9
N
ame plate
F
or rated parameters and safety precautions
of the inverter
10
FAN
BG6KTR
(NO FAN) , BG8KTR / BG10KTR(Air cooling)

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2.3 Nameplate
Figure 2.4 Inverter nameplate
˄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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Icons
Instruction
zTUV certification mark. The inverter is certified by TUV.
zCE certification mark. The inverter complies with the CE directive.
zCQC certification mark. The inverter is certified by CQC
zEU WEEE mark. Cannot dispose of the inverter as household waste.
2.4 DRM instruction
Figure 2.5 DRM label
Table 2-2 DRMs instruction
No.
Mode
Requirement
1
DRM0
Operter 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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2.5 Products modules
Table 2-3 Models of iMars grid-tied solar inverter
Product name Model
Rated output power
Three
-phase (L1,L2,L3,N,PE)
Three-phase grid-
tied solar inverter
BG6KTR 6000
Three-phase grid-
tied solar inverter
BG8KTR 8000
Three-phase grid-
tied solar inverter
BG10KTR 10000
Note: Refer to the product specifications in chapter 10 for detailed information.

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2.6 Dimensions and weight
Figure 2.6 Inverter dimensions
Table 2-4 Inverter dimension and net weight
Model H
(mm)
W
(mm)
D
(mm)
N
et weight
(kg)
BG6KTR 530 360 150 20
BG8KTR / BG10KTR 575 360 150 23

W
H
D
Figure 2.6Paper packages dimension
Table 2-4 Packages dimension and gross weight
Model H
(mm)
W
(mm)
D
(mm)
Gross
weight (kg)
Packaging
Material
BG6KTR
630
470
284
22
Paper
BG8KTR / BG10KTR
675
470
284
25
Paper

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3 Storage
If the inverter is not put into use immediately, the storage of inverter should meet the following
requirements:
zDo not remove the outer packing.
zThe inverter needs to be stored in a clean and dry place, and prevent the erosion of dust and
water vapor.
zThe storage temperature should be kept at -40°C~+70°C, and the relative humidity should
be kept at 5%RH~95%RH.
zThe 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.
zKeep away from chemically corrosive substances that may corrode the inverter.
zPeriodic 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.