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

iMarsgrid-tiedsolarinverters Contents
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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

iMarsgrid-tiedsolarinverters Contents
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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.

iMarsgrid-tiedsolarinverters Safety precautions
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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.