CanadianSolar CSI-75K-T40001-E User manual

CSI-75K-T40001-E
CSI-80K-T40001-E
CSI-100K-T4001A-E
CSI-100K-T4001B-E
CSI-110K-T40001-E
PV Inverter User Manual
(Part No: 2809003300; Release Date: September, 2021)

Contents
All Rights Reserve ______________________________________________________________________________________ 1
About This Manual _____________________________________________________________________________________ 1
Limitation of Liability _________________________________________________________________________________ 1
Target Group _________________________________________________________________________________________ 1
Symbol Conventions _________________________________________________________________________________ 1
1 Safety _________________________________________________________________________________________________ 2
1.1 PV Panels _________________________________________________________________________________________ 2
1.2 Utility Grid ________________________________________________________________________________________ 2
1.3 Inverter___________________________________________________________________________________________ 2
1.4 Skills of Qualified Personnel ______________________________________________________________________ 3
2 Product Introduction _________________________________________________________________________________ 3
2.1 Intended Usage __________________________________________________________________________________ 3
2.2 Product Introduction _____________________________________________________________________________ 4
2.2.1 Appearance __________________________________________________________________________________ 4
2.2.2 LED Indicator Panel __________________________________________________________________________ 6
2.3 Circuit Diagram___________________________________________________________________________________ 6
2.4 Function Description _____________________________________________________________________________ 7
3 Unpacking and Storage_______________________________________________________________________________ 8
3.1 Unpacking and Inspection________________________________________________________________________ 8
3.2 Identifying the Inverter___________________________________________________________________________ 8
3.3 Scope of Delivery _________________________________________________________________________________ 9
3.4 Storage ___________________________________________________________________________________________ 9
4 Mechanical Mounting________________________________________________________________________________ 10
4.1 Safety during Mounting _________________________________________________________________________ 10
4.2 Location Requirements __________________________________________________________________________ 10
4.2.1 Installation Environment Requirements_____________________________________________________ 10
4.2.2 Carrier Requirements _______________________________________________________________________ 11
4.2.3 Installation Angle Requirements ____________________________________________________________ 11
4.2.4 Installation Clearance Requirements ________________________________________________________ 11
4.3 Moving the Inverter _____________________________________________________________________________ 12
4.3.1 Manual Transport ___________________________________________________________________________ 12
4.3.2 Hoisting Transport __________________________________________________________________________ 12
4.4 Assembling the mounting-bracket ______________________________________________________________ 13
4.5 Standard C or U Steel Installation _______________________________________________________________ 14
4.6 Steel Frame Installation _________________________________________________________________________ 14
4.7 Wall-Mounted Installation _______________________________________________________________________ 15

4.8 Inverter Installation _____________________________________________________________________________ 15
5 Electrical Connection ________________________________________________________________________________ 16
5.1 Safety____________________________________________________________________________________________ 16
5.2 Electrical Connection Overview ___________________________________________________________________ 17
5.3 Connecting the PE Cable _________________________________________________________________________ 18
5.3.1 Additional Grounding Requirements ________________________________________________________ 18
5.3.2 Connection Procedure_______________________________________________________________________ 18
5.4 Opening the Wiring Compartment ______________________________________________________________ 19
5.5 Communications Interface Description__________________________________________________________ 20
5.6 RS485 Communication___________________________________________________________________________ 20
5.6.1 Single-invertercommunication system ______________________________________________________ 20
5.6.2 Multi-inverter communication system_______________________________________________________ 21
5.6.3 Connection Procedure (Terminal Block) _____________________________________________________ 22
5.6.4 Connection Procedure (RJ45 network port)__________________________________________________ 23
5.7 Dry Contact Connection _________________________________________________________________________ 23
5.8 Data Logger Connection_________________________________________________________________________ 25
5.9 AC Cable Connection ____________________________________________________________________________ 25
5.9.1 AC Side Requirements _______________________________________________________________________ 25
5.9.2 Connection Procedure_______________________________________________________________________ 27
5.9.3 Aluminium Cable Requirement______________________________________________________________ 28
5.10 Tracker System Power Supply Connection (Optional) __________________________________________ 29
5.10 Closing the Wiring Compartment ______________________________________________________________ 30
5.11 DC Cable Connection___________________________________________________________________________ 30
5.11.1 PV Input Configuration_____________________________________________________________________ 31
5.11.2 Connection Procedure _____________________________________________________________________ 31
5.11.3 Installing the PV Connectors _______________________________________________________________ 32
5.11.4 Wiring Procedure __________________________________________________________________________ 32
6 Commissioning Inverter _____________________________________________________________________________ 33
6.1 Electrical Inspection _____________________________________________________________________________ 33
6.2 Commissioning Procedure ______________________________________________________________________ 33
7 System Decommissioning ___________________________________________________________________________ 33
7.1 Disconnecting the Inverter ______________________________________________________________________ 33
7.2 Dismantling the Inverter ________________________________________________________________________ 33
7.3 Disposal of the Inverter__________________________________________________________________________ 33
8 Daily Maintenance___________________________________________________________________________________ 34
9 Troubleshooting _____________________________________________________________________________________ 38
9.1 Warning _________________________________________________________________________________________ 38
9.2 Errors____________________________________________________________________________________________ 38
ANNEX: Specification __________________________________________________________________________________ 42

All Rights Reserve
1 / 42
All Rights Reserve
This manual provides important safety information on relating to the installation, maintenance and usage of three
phase PV inverters. Both users and professional installers must read these guidelines carefully and strictly follow
these instructions. Failure to follow these instructions may result in death, serious injury or property damage.
Only qualified professionals and service personnel can do the installation and operation (refer to 62109-1). Installers
must inform end-users (consumers) about the aforesaid information accordingly.
This manual is only valid for the PV inverter types, CSI-75K-T40001-E, CSI-80K-T40001-E, CSI-100K-T40001-E, and CSI-
110K-T40001-E produced by CSI Solar Co., Ltd.
About This Manual
The information contained in this manual is subject to change by CSI Solar Co., Ltd. without prior notice. CSI Solar Co.,
Ltd. gives no warranty of any kind whatsoever, either explicitly or implicitly, with respect to the information contained
herein.
In the event of any inconsistency among different language versions of this document, the English version shall
prevail. Please refer to our product lists and documents published on our website at: http://www.csisolar.com as
these lists are updated on a regular basis.
Limitation of Liability
CSI Solar Co., Ltd. shall not be held responsible for damages of any kind, including-without limitation-bodily harm,
injury or damage to property, in connection with handling PV inverters, system installation, or compliance or non-
compliance with the instructions set forth in this manual.
Target Group
This document is intended for installers and users.
Symbol Conventions
The Important instructions contained in this manual should be followed during installation, operation and
maintenance of the inverter. They will be highlighted by the following symbols.
Symbol
Description
DANGER
Indicates ahazard with ahigh level of risk that, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazard with a medium level of risk that, if not avoided, could result in death or serious
injury.
CAUTION
Indicates ahazard with alow level of risk that, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates asituation that, if not avoided, could result in equipment or property damage.
Information
Indicates additional information, emphasized contents or tips thatmay be helpful, e.g. to help you solve
problems or save time.

1 Safety
2 / 42
1 Safety
The inverter has been esigned and tested strictly according to international safety regulations. Read all safety instruct
ions carefully prior to any work and observe them at all times when working on or with the inverter.
Incorrect operation or work may cause:
· Injury or death to the operator or athird party; or
· Damage to the inverter and other property safety of the operator or a third party. All detailed work-related safety
warning and notes will be specified at critical points in this manual.
Notice:
The safety instructions in this manual cannot cover all the precautions that should be followed. Perform operations co
nsidering actual onsite conditions.
CSI Solar shall not be held liable for any damage caused by violation of the safety instructions in this manual.
1.1 DANGER
PV strings will produce electrical power when exposed to sunlight and can cause a lethal voltage and an electric
shock.
-Always keep in mind that the inverter is dual power supplied. Electrical operators must wear proper personal
protective equipment: helmet, insulated footwear, glove, etc.
-Before touching the DC cables, operator must use a measuring device to ensure that the cable is voltage - free.
-Follow all warnings on the PV strings and in its manual.
1.1 Utility Grid
Please follow the regulations related to the utility grid.
NOTICE
All electrical connections must be in accordance with local and national standards.
Only with the permission of the utility grid, the inverter can be connected to the utility grid.
1.2 Inverter
DANGER
Danger to life from electric shocks due to live voltage
-Do not open the enclosure at any time. Unauthorized opening will void guarantee and warranty claims and in
most cases terminate the operating license.
WARNING
Risk of inverter damage or personal injury
-Do not pull out the PV connectors when the inverter is running.
-Wait at least 5 minutes for the internal capacitors to discharge. Ensure that there is no voltage or current before
pulling any connector.
CAUTION
Risk of burns due to hot components!
Do not touch any hot parts (such as heat sink) during operation. Only the DC switch can safely be touched at any
time.

2 Product Introduction
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NOTICE
Only qualified personnel can perform the country setting.
- Unauthorized alteration of the country setting may cause abreach of the type-certificate marking.
By touching the electronic components, you may damage the inverter. For inverter handling, be sure to:
- avoid any unnecessary touching;and,
- wear agrounding wristband before touching any connectors.
- Persons with limited mobility or mentally retarded are not allowed to operate the inverters.
Warning Label
Symbol
Description
Hot surfaces!
Risk of burns due to hot components!
Disconnect the inverter from all the external power sources before service!
Danger to life due to high voltage!
Time need to discharge stored energy in the capacitors.
Grounding
Direct Current (ＤＣ)
Alternating Current(ＡＣ)
1.3 Skills of Qualified Personnel
All installations should be performed by qualified personnel. They should have:
- Training in the installation and commissioning of the electrical system, as well as the dealing with hazards.
- Knowledge of the manual and other related documents.
- Knowledge of the local regulations and directives.
2 Product Introduction
2.1 Intended Usage
The inverter is a transformerless three-phase PV grid-connected inverter, is an integral component in the PV power
system.
This document involves the following product models:
CSI-75K-T40001-E, CSI-80K-T40001-E, CSI-100K-T4001A-E, CSI-100K-T4001B-E and CSI-110K-T40001-E.
The inverter is designed to convert the direct current power generated from the PV modules into grid-compatible AC
current and feeds the AC current to the utility grid. The intended usage of the inverter is illustrated in figure as bellow,
inverter application in PV power system.

2 Product Introduction
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A B C D E
A) PV string; B) Inverter; C) AC distribution box/cabinet; D) Transformer station; E) Utility grid
Inverter application in PV power system
WARNING
Inverter cannot connect the PV strings whose positive and negative terminals need to be grounded.
Do not connect any local load between the inverter and the AC circuit breaker.
L1
L2
L3
N
PE
PV INVERTER
L1 L2 L3 NPE
TN-S
L1
L2
L3
PEN
PV INVERTER
L1 L2 L3 NPE
TN-C
L1
L2
L3
N
PE
PV INVERTER
L1 L2 L3 NPE
TN-C-S
L1
L2
L3
N
PV INVERTER
L1 L2 L3 NPE
TT
L1
L2
L3
PV INVERTER
L1 L2 L3 PE
IT
PE PE
2.2 Product Introduction
2.2.1 Appearance and dimension
1050mm 355mm
687mm
1 6
3
4
5
2
3
4
5
2
7
8
9

2 Product Introduction
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CSI-110K-T40001-E
COMM.PORT-1 FANM ODULE ACOUTPUT
COMM.PORT-2
COMM.PORT-4
COMM.PORT-3
AUX PORT
VENTV ALVE
MPPT-9
PV-17 PV-18
MPPT-8
PV-15 PV-16
MPPT-7
PV-13 PV-14
MPPT-6
PV-11 PV-12
MPPT-5
PV-9 PV-10
MPPT-4
PV-7 PV-8
MPPT-3
PV-5 PV-6
MPPT-2
PV-3 PV-4
MPPT-1
PV-1 PV-2
DONOT DISCONNECT UNDER LOAD!
DC SWITCH-3
ON
OFF
DC SWITCH-2
ON
OFF
DC SWITCH-1
ON
OFF
COMM.PORT-1 FANM ODULE AC OUTPUT
COMM.PORT-2
COMM.PORT-4
COMM.PORT-3
AUX PORT
VENTV ALVE
MPPT-9
PV-17 PV-18
MPPT-8
PV-15 PV-16
MPPT-7
PV-13 PV-14
MPPT-6
PV-11 PV-12
MPPT-5
PV-9 PV-10
MPPT-4
PV-7 PV-8
MPPT-3
PV-5 PV-6
MPPT-2
PV-3 PV-4
MPPT-1
PV-1 PV-2
DONOT DISCONNECT UNDER LOAD!
DC SWITCH-3
ON
OFF
DC SWITCH-2
ON
OFF
DC SWITCH-1
ON
OFF
CSI-100K-T4001B-E
CSI-100K-T4001A-E
CSI-80K-T40001-E
CSI-75K-T40001-E
17 1211 16 10 15 13 14
17 1211 16 10 15 13 14
Note: the image shown here is for reference only. The actual product you receive may differ.
1.LED indicator Panel
2.Side handles and mounting ears
3.Bottom handles
4.M12 holes for lifting eyes or hand shanks
5.M12 holes for hand shanks
6.Additational grounding points
7.Rating label
8.Warning label
9.The cover of outer fan module
10.The cover of interior fan module
11.PV input connectors
12.DC disconnect switch
13.Cable gland for AC output
14.Cable gland for interior grounding
15.Cable gland for communication
16.Communication connector for data logger
17.Breather valve

2 Product Introduction
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2.2.2 LED Indicator Panel
As an HMI, the LED indicator panel on the front of the inverter can indicate the present working state of the inverter.
LED indicator
LED state
Definition
PV connection
indicator
Not in maintenance
status
Steady green
At least one PV string is properly connected, and
the DC input voltage of the corresponding MPPT
circuit is at least 200V.
Off
The solar inverter disconnects from all PV strings,
or the DC input voltage of all MPPT circuits is less
than 200V.
In maintenance
status
Blinking green
DSPM in copying or updating
Steady green
DSPM copy or update succeeds.
Off
DSPM copy or update fails.
Grid
connection
indicator
Not in maintenance
status
Steady green
The solar inverter is in grid-tied mode.
Blinking green fast
The solar inverter is in self-test mode.
Blinking green
slowly
The solar inverter is in wait mode.
Off
The solar inverter is not in grid-tied mode.
In maintenance
status
Blinking green
ARMS in copying or updating
Steady green
ARMS copy or update succeeds.
Off
ARMS copy or update fails.
Communicatio
ns/Maintenan
ce indicator
Not in maintenance
status
Blinking green
The solar inverter receives communication data
normally
Off
The solar inverter has not receives communication
data for 10 seconds.
In maintenance
status
Steady green
The solar inverter is in maintenance status
Alarm
indicator
Not in maintenance
status
Steady green
A major alarm is generated.
Blinking green fast
A minor alarm is generated.
Blinking green
slowly
A warning alarm is generated.
Off
No alarm
In maintenance
status
Blinking green
slowly
The solar inverter is in update maintenance mode.
Off
The PID function of solar inverter is on work.
Turn the DC switches to the ON position before restarting the inverter.
2.3 Circuit Diagram
The MPPT is utilized for DC input to ensure the maximum power from the PV array at different PV input conditions.
The inversion circuit converts the DC power into AC power and feeds the AC power into the utility grid through the AC
terminal. The protection circuit is equipped to ensure the safe operation of the device and personal safety.

2 Product Introduction
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The following figure shows the main circuit of the inverter.
DC EMI
Filter
MPPT1
（Boost1）
AC Filter AC EMI
Filter
AC SPD
DC SPD
+
-
DC1
DC
Switch
+
-
DC9
Current
Monitoring
MPPT9
（Boost9）
DC BUS Inverter Circuit
(DC/AC)
AC Relays
L1
L2
L3
N
PE
2.4 Function Description
The inverter is equipped with the following functions:
1) Conversion function
The inverter converts the DC current into grid-compatible AC current and feeds the AC current into the grid.
2) Data storage
The inverter logs running information, error records, etc.
3) Parameter configuration
The inverter provides various settable parameters. Users can set parameters via the App to meet the requirements and
optimize the performance.
4) Communication interface
The inverter is designed with standard RS485 communication interfaces.
The standard RS485 communication interfaces are used to establish communication connection with monitoring
devices and upload monitoring data by using communication cables.
After communication connection is established, users can view inverter information or set inverter parameters through
the iSolarCloud.
5) Protection Function
The protective functions are integrated in the inverter, including anti-island protection, LVRT/ZVRT, DC reversed polarity
protection, AC short circuit protection, leakage current protection, DC overvoltage/overcurrent protection, etc.
6) PID function
After the PID function is enabled, the voltage to ground of all PV modules is greater than 0, that is, the PV module-to-
ground voltage is a positive value.
3~
NNOTICE
-Before enabling the PID recovery function, make sure the voltage polarity of the PV modules to ground meets
requirement. If there are any questions, contact the PV module manufacturer or read its corresponding user
manual.
-If the voltage scheme for the PID protection/recovery function does not meet the requirement of
corresponding PV modules, the PID function will not work as expected or even damage the PV modules.
-Anti-PID function
When the inverter is running, the PID function module rises the potential between the negative pole of the PV array and
the ground to a positive value, to suppress the PID effect.

3 Unpacking and Storage
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Make sure the inverter is applied to an IT system before enabling the anti-PID function.
-PID recovery function
When the inverter is not running, the PID module will apply inverse voltage to PV modules, to restore the degraded
modules.
-If the PID recovery function is enabled, it only works at night.
-After the PID recovery function is enabled, the voltage of the PV string to ground is 500Vdc by
default, and the default value can be modified through the App.
3 Unpacking and Storage
3.1 Unpacking and Inspection
Before unpacking the inverter, check the package appearance thoroughly, such as for holes and cracks, and check the
inverter model accordingly. If you discover any damage to the packaging which indicates the inverter may have been
damaged, or the inverter model is not the one you requested, do not unpack the product and contact your dealer
immediately.
After opening the package, check all of the accessories carefully in the carton. If any damage is found or any
component is missing, contact your local installer.
3.2 Identifying the Inverter
The nameplate provides a unique identification of the inverter (Product type, device -specific characteristics,
certificates and approvals).
The nameplate is on the left side of the enclosure.
Inverter Nameplate (for reference)

3 Unpacking and Storage
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3.3 Scope of Delivery
PV inverter(x1) Mouinting bracket(x1set)
Screw flat head M4x8(x4) Hand shank(x4)
Bolt M6x30(x2)
Nut M10(x4)
PV connector(x18Pairs) Documents
Bolt M10x40(x4)
Number of PV connectors, 18 pcs for the type of 9MPPTs, and 12 pcs for the type of 6MPPTs.
The actual configuration in order to prevail in kind.
3.4 Storage
The following requirements should be met when the inverters need to be stored:
Storage temperature: –40°C ~ +70°C.
Storage humidity: 0% ~ 100%RH (Non-Condensing).
The warehouse should be clean, well-ventilated, and non-corrosive gas (corrosive or flammable gases), meanwhile it
should be accessible all the time.
No smoking, no illegal use of electricity and fire.
When storing inverters, do not stack more than the allowed layers to avoid damage, which number marked on the
product packaging.
4
4
Do not tilt the package or place it upside down.
Regular inspection is required during the storage.
If the inverter has been stored more than half a year, it must be checked and tested by professionals before put into
use.

4 Mechanical Mounting
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4 Mechanical Mounting
4.1 Safety during Mounting
DANGER
Make sure there is no electrical connection before installation.
In order to avoid electric shock or other injury, be sure there is no electricity or plumbing installations before drilling holes.
C CAUTION
Risk of injury due to improper handling
-Always follow the instructions when moving and positioning the inverter.
-Improper operation may cause injuries, serious wounds, or bruise.
System performance loss due to poor ventilation!
-Keep the heat sinks uncovered to ensure heat dissipation performance.
4.2 Location Requirements
Select an optimal mounting location for safe operation, long service life, and outstanding performance.
-The inverter with IP 66 can be installed both indoors andoutdoors.
-Install the inverter in a place convenient for electrical connection, operation, and maintenance.
4.2.1 Installation Environment Requirements
1) Do not install the inverter on the structures constructed of flammable, thermolabile or explosive materials.
2) Ensure the inverter is out of children's reach.
3) The ambient temperature should be between -25°C to 60°C.
4) The humidity of the installation location should be below 100% without condensation.
5) Do not install the inverter outdoors in salt, sulfur or other corrosive areas.
The inverter would be corroded in salt (i.e. marine environments) area, and the corrosion may cause fire. In salt area
refers to the region within 500 meters from the coast.
Please consult the CSI Solar Co., Ltd. technical support department on the use of inverters in special climates (i.e. salt,
sulfur, or ammonia areas) which may affect the product warranty.
6) Prevent the inverter from direct exposure to sun, rain and snow.
7) The inverter should be well ventilated. Ensure air circulation
8) Never install the inverter in living areas. The inverter will generate noise during operation, affecting daily life.
9) Install at at an appropriate height for ease of viewing LED indicators and operating switches
10) Do not install in small closed cabinet where air cannot circulate freely.

4 Mechanical Mounting
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4.2.2 Carrier Requirements
The installation carrier should meet the following requirements:
Made of non-inflammable materials;
Max. load bearing capacity ≥ 4 times of inverter weight.
4.2.3 Installation Angle Requirements
Inverter vertically or at aminimum back tilt of 10°. Forward installation or upside down installation is prohibited.
Vertical Forward Upside downBackward
≥10
4.2.4 Installation Clearance Requirements
1) Reserve enough clearance around the inverter to ensure sufficient space for heat dissipation. (The fans are
maintained on the left side of the inverter, and a larger clearance is required.)
In case the distance is less than 800mm, move the inverter from the mounting-bracket or wall before maintaining fans.
≥600mm
≥800mm
≥1000mm
≥400mm
≥500mm
2) In case of multiple inverters, reserve specific clearance between the inverters.
≥800mm ≥800mm ≥400mm
3) In case of back-to-back installation, reserve specific clearance between the two inverters.

4 Mechanical Mounting
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≥500mm
4.3 Moving the Inverter
Move the inverter to the specified position before installation. The inverter can be moved manually or via ahoist.
4.3.1 Manual Transport
Step 1 Install four screw-in hand shanks into the corresponding M12 holes, which holes in the handles at side and
bottom of the inverter.
Step 2 Lift and move the inverter to the destination by using the side and bottom handles as well as the four installed
hand shanks.
Step 3 Remove the four hand shanks .
CAUTION
Inappropriate moving operation may cause personal injury!
It is recommended that at least four installers carry the inverter together and wear protective equipment such as
smash - proof shoes and gloves.
Always beware of the gravity center of the inverter and avoid tipping.
NOTICE
The ground surface on which the inverter is to be placed should be covered with a sponge pad, foam cushion or the
like to prevent the inverter bottom from scratches.
4.3.2 Hoisting Transport
Step 1 Install two M12 lifting eye nuts into the corresponding M12 holes at side handles of the inverter.
Step 2 Lead the sling through the two lifting eye nuts and fasten the tie-down strap.
Step 3 Hoist the inverter, and stop to check for safety when the inverter is 100mm above the ground. Continue hoisting
the device to the destination after ensuring the safety.
Step 4 Remove the two lifting eye nuts.

4 Mechanical Mounting
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CAUTION
Keep the inverter balanced throughout the hoisting process and avoid collisions with walls or other objects.
Stop hoisting in the event of severe weather, such as heavy rain, thick fog, or strong wind.
The lifting rings and the sling are not within the delivery scope.
4.4 Assembling the mounting-bracket
Dimensions of the assembled mounting-bracket are as follows:
990.5
250
1050.5
355
2-Ø12
12
20
12
20
Assemble the mounting-bracket by using the connecting bar.
M4
PH2 1.5N.m

4 Mechanical Mounting
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4.5 Standard C or U Steel Installation
Mounting Steps:
Step 1 Localize the hole positions in C or U-section steel to install mounting bracket.
Step 2 Secure the mounting bracket with M10 bolts and nuts .
M10
30N.m
4.6 Steel Frame Installation
Mounting Steps:
Step 1 Level the assembled mounting-bracket by using a level, and mark the positions for drilling holes on the steel
frame. Drill the holes by using a hammer drill.
Ø12
Step 2 Secure the mounting-bracket with M10 bolts and nuts.
M10
30N.m

4 Mechanical Mounting
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4.7 Wall-Mounted Installation
Mounting Steps
Step 1 Level the assembled mounting-bracket by using a level, and mark the positions for drilling holes on the
installation site.
Step 2 Insert the expansion bolts into the holes and secure them with arubber hammer. Fasten the nut with a wrench
to expand the bolt. Remove the nut, spring washer, and flat washer, and store them properly.
Step 3 Fix the mounting-bracket with the expansion bolts.
(Note: No expansion bolt is supplied.)
M10
30N.m
Note: No expansion bolt is supplied.
4.8 Inverter Installation
Step 1 Take out the inverter from the packing carton.
Step 2 Hoist the inverter to the installation position when necessary (refer to "4.3.2 Hoisting Transport"). If the installation
position is not high enough, skip performing this step.
Step 3 Hang the inverter to the mounting-bracket and ensure that the mounting ears perfectly engage with the
mounting-bracket.

5 Electrical Connection
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Step 4 Fix the inverter with screws M6x30.
M6
4.5
N.m
5 Electrical Connection
5.1 Safety
Prior to any electrical connections, keep in mind that the inverter has dual power supplies.
It is mandatory for the qualified personnel to wear personal protective equipments (PPE) during the electrical work.
DANGER
Danger to life due to ahigh voltage inside the inverter!
-The PV string will generate lethal high voltage when exposed to sunlight.
-Before starting electrical connections, disconnect the DC and AC circuit. breakers and prevent them from
inadvertent reconnection.
-Ensure that all cables are voltage free before performing cable connection.

5 Electrical Connection
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WARNING
Any improper operations during cable connection can cause device damage or personal injury.
Only qualified personnel can perform cable connection.
All cables must be undamaged, firmly attached, properly insulated and adequately dimensioned.
NOTICE
Comply with the safety instructions related to the PV strings and the regulations related to the utility grid.
-All electrical connections must be in accordance with local and nationalstandards.
-Only with the permission of the utility grid, the inverter can be connected tothe utility grid.
5.2 Electrical Connection Overview
Electrical connection in the PV system includes additional grounding connection, AC connection, and PV string connection.
1
2
34
ABC D E
5
A）PV string; B）Inverter; C） AC distribution box/cabinet ; D）Utility grid; E）Monitoring device
Table 5-1 Recommended Cables
Cable Name
Cable Type
Conductor Cross-Sectional Area
Outer Diameter
DC cable
PV cable, complying with 1500V
standard
4~6mm2
6~9mm
Additional
Grounding cable
Outdoor single core copper conductor
cable
The same as that of the
PE wire in the AC cable
N/A
AC cable
F our/Five-core outdoor copper or
aluminum cables*
1) 4 or 5 x 70~185 mm2
2) 3 x 240+1 x 120 mm2
36~57mm
PE wire: refer to "table 5-
2PE wire requirements"
Communication
cable
Shielded twisted pair (terminal block)
0.1~0.5 mm2
4~15mm
CAT-5 Ethernet cable (RJ45)
N/A
*Acopper to aluminum adapter terminal is required when an aluminum cable is used.
For details, refer to "5.9.3 Aluminium Cable Requirements".
Table 5-2 PE wire requirements
Phase wire cross
section S
PE wire cross
section
Note
S ＞ 35 mm2
S/2
The specifications are valid only when the phase wire and PE wire use the
same material. If otherwise, ensure that the cross section of PE wire produces
a conductance equivalent to that of the wire specified in the table.
Table 5-3 Power cable for tracking system
Cable
Cable Type
Conductor Cross-
Sectional Area
Outer Diameter
Voltage level
Power cable for
tracking system
Outdoor copper
conductor cable
2 or 3 x 4~10mm2*
9~18mm
Consistent with
s
selected AC cable