CanadianSolar CSI-3K-S22002-ED User manual

CSI-3K-S22002-ED
CSI-5K-S22002-ED
PV Inverter User Manual
(Part No: 6431000501 Released Date: August, 2020)

Contents
1 Introduction .................................................................................1
1.1 General Information .........................................................1
1.2 User Manual Disclaimer....................................................1
1.3 Limitation of Liability.........................................................1
1.4 Target Group......................................................................1
1.5 Symbol Conventions .........................................................1
1.5.1 Warnings in the manual .........................................2
1.5.2 Labels on product and packaging .........................2
2 Safety Instruction.........................................................................3
2.1 General Safety ...................................................................3
2.2 Notice for Use ....................................................................3
2.2.1 Personnel requirements.........................................3
2.2.2 Operation requirements ........................................3
2.2.3 Protecting labels .....................................................3
3 Product Overview ........................................................................4
3.1 Product Introduction.........................................................4
3.2 Appearance........................................................................4
3.3 Product Nameplate ...........................................................5
4 Storage .........................................................................................7
5 Unpackaging and Inspection......................................................7
6 Installation....................................................................................8
6.1 Basic Installation Requirements ......................................8
6.2 Mounting Wall-mounting Bracket .................................10
6.3 Installing Inverter............................................................11
7 Electrical Connection.................................................................12
7.1 Safety................................................................................12
7.2 Network Diagram............................................................12
7.3 Meter/CT Connection (Optional) ....................................12
7.3.1 Meter connection..................................................12
7.3.2 CT connection........................................................13
7.4 Cable Description ............................................................13
7.5 Wiring PE Cable ...............................................................13
7.6 Wiring AC Output ............................................................14

7.7 Wiring DC Input...............................................................16
7.71 Requirement for DC input.....................................17
7.72 Wiring......................................................................17
7.73 Connecting PV array (DC input) ............................18
7.8 Wiring CT/Meter ..............................................................19
8 Communication .........................................................................20
8.1 Communication Mode ....................................................20
8.2 RS485................................................................................20
8.3 External GPRS (Optional) ................................................20
8.4 External WiFi ....................................................................20
9 Commissioning Inverter ...........................................................21
9.1 Checking Electrical ..........................................................21
9.2 Checking Mechanical ......................................................21
9.3 Start-UP Inverter .............................................................21
9.4 LED Indicators..................................................................22
9.5 Switch off..........................................................................22
10 Daily Maintenance...................................................................23
11 SPD Maintenance.....................................................................24
12 Trouble Shooting .....................................................................25
12.1 Warning..........................................................................25
12.2 Errors..............................................................................25
13 Handling the Inverter..............................................................27
13.1 Removing Inverter ........................................................27
13.2 Packing Inverter ............................................................27
13.3 Disposing Inverter.........................................................27
ANNEX A: Acronyms and Abbreviations......................................28
ANNEX B: Specification.................................................................29

1 Introduction
1 / 30
1 Introduction
1.1 General Information
This manual provides important safety information on relating to the installation,
maintenance and usage of single 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-3K-S22002-ED and
CSI-5K-S22002-ED produced by Canadian Solar Inc.
1.2 User Manual Disclaimer
The information contained in this manual is subject to change by Canadian Solar Inc.
without prior notice. Canadian Solar Inc. 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.canadiansolar.com as these lists are updated on
a regular basis.
1.3 Limitation of Liability
Canadian Solar Inc. 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.
1.4 Target Group
This document is intended for installers and users.
1.5 Symbol Conventions
The symbols that may be found in this document or on the product packaging are
defined as follows.

1 Introduction
2 / 30
1.5.1 Warnings in the manual
A warning describes a hazard to equipment or personnel. It calls attention to procedure
or practice.
Symbol
Description
DANGER
DANGER indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if
not avoided, could result in minor or moderate injury.
NOTICE
NOTICE indicates a situation which, if not avoided, could result in
equipment or property damage.
Information
Information indicates that you must read carefully to ensure
optimal operation of the system.
1.5.2 Labels on product and packaging
Symbol
Description
Hot surfaces!
Risk of burns due to hot components!
Danger to life due to high voltage!
Time need to discharge stored energy in the capacitors.
Grounding
Direct Current (DC)
Alternating Current (AC)
Check the user manual before service.
CE mark.
WEEE designation.

2 Safety Instruction
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2 Safety Instruction
2.1 General Safety
The Inverter has been designed and tested strictly according to the international safety
codes, however, certain safety precautions must be observed when installing and
operating this inverter. Read and follow all the instructions, cautions and warnings in this
user manual carefully before any work and keep this manual for future reference.
2.2 Notice for Use
2.2.1 Personnel requirements
Only qualified personnel are allowed to install and commission the inverter, they should:
1) Receive professional training and get the authorization.
2) Be familiar with the safety specification about the electrical system.
3) Be familiar with the local requirements, rules and regulations.
4) Understand the composition and working principles of the grid-tied PV system.
2.2.2 Operation requirements
Use the inverter in installations that meet the following specifications only.
1) Permanent installation is required.
2) The electrical installation must meet all the applications and standards.
3) The inverter must be installed according to the instructions stated in this manual.
4) The inverter must be installed according to the correct technical specifications.
5) To startup the inverter, the Grid Main Switch (AC) must be switched on, before the
solar panel’s DC solar switched on. To stop the inverter, the Grid Supply Main Switch (AC)
must be switched off before the solar panel’s DC isolator switched off.
2.2.3 Protecting labels
1) Do not scrawl or damage any labels on the inverter enclosure because these labels
contain important information about safe operation.
2) Do not scrawl or damage the nameplate on the inverter enclosure. This nameplate
contains important product information.

3 Product Overview
4 / 30
3 Product Overview
3.1 Product Introduction
The inverters are single-phase gird-connected PV string inverters without transformer,
which can convert the DC power from the photovoltaic (PV) strings into alternating
current (AC) power, and feed the power into the power grid.
This document involves the following product models:
CSI-3K-S22002-ED; CSI-5K-S22002-ED.
PV grid-connected system mainly includes PV modules, DC switch, inverter, AC switch,
electricity meter, and local grid. The PV power system diagram is shown as FIG.3-1.
KWH
PV Modules DC Switch Inverter AC Switch Electricity Meter Utility Grid
FIG. 3-1 PV Power System Diagram
3.2 Appearance
1) CSI-3K-S22002-ED Front view and bottom view
A B CD EF GH

3 Product Overview
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2) CSI-5K-S22002-ED Front view and bottom view
A B CD E F GH
FIG. 3-2 Product Appearance
Object
Name
Description
Ａ
LED indicator
Indicates inverter operation status.
Ｂ
DC input connectors
/
Ｃ
DC disconnect switch
Disconnect the DC current safely.
D
CT/Meter receptacle
Connect CT or Meter.
E
Waterproof and breathable valve
/
F
Communication port
Connect wireless datalogger (WiFi or GPRS),
RS485.
G
AC receptacle
/
H
External ground point
/
3.3 Product Nameplate
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.

3 Product Overview
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FIG.3-3 Inverter Nameplate (for reference)

4 Storage
7 / 30
4 Storage
The following requirements should be met when the inverters need to be stored:
Do not unpack the inverter.
Storage temperature: –40°C ~ +70°C.
Storage humidity: 0% ~ 100%RH (Non-Condensing).
The stored warehouse should be clean, well-ventilated, and non-corrosive gas,
meanwhile it should be in a state of unimpeded access.
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.
Regular inspection is required during the storage.
After long periods storage, the inverters need to be inspected and tested by qualified
persons before they are put into use.
5 Unpackaging and Inspection
Before unpacking the inverter, check the package appearance thoroughly, such as any
holes and cracks, and check the inverter model accordingly. If discover any damage to
the packaging which indicates the inverter may have been damaged, or the inverter
model is not what 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 dealer.
Note:
For details information about the components, see the packing list document in the
packing case.

6 Installation
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6 Installation
6.1 Basic Installation Requirements
1) Do not install the inverter on the structures constructed of flammable or thermolabile
materials.
2) The installation surface must be strong enough to bear the inverter's weight for a long
period time. (Please check the inverter’s weight in the product specification of ANNEX B).
3) The inverter is protected to IP65, can be installed indoors and outdoors.
4) The humidity of the installation location should be below 100% without condensation.
5) The ambient temperature should be between -25°C to 60°C.
6) Install at eye-level for easy operation.
7) Do not install the inverter near television antenna or any other antennas and antenna
cables.
8) Ensure the inverter is out of children's reach.
9) Install inverter at the locations with some cover or protection, to ensure the optimum
operation.
FIG.6-1 Inverter Installation Positions
10) Do not install in small closed cabinet where air cannot circulate freely. Do not put any
other objects on the inverter.

6 Installation
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FIG.6-2 Forbid to Install in Small Closed Cabinet
11) Comply with the Min. clearance to walls, other inverters, or objects to ensure the
installation and maintenance, meanwhile for the good heat dissipation.
FIG.6-3 Installation Clearance Requirements
min.30c m
min.50cm
min.50cm
min.30c m min.30c m min.30c m min.30c m
min.30c mmin.30c mmin.30c m min.30c m
min.50cm min.50cm min.50cm
min.50cm min.50cm min.50cm min.50cm
min.50cm min.50cm
FIG.6-4 Staggered Installation Mode (Recommended)
12) Install the inverter vertically or at a maximum backward tilted angle of 15 degrees to
Direction
Min. clearance (cm)
Above
50
Below
50
Sides
30
Front
30

6 Installation
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facilitate heat dissipation.
≤15°
FIG.6-5 Installation Angle Requirements
13) 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 Canadian Solar Inc. Technical support department on the use of
inverters in special climates (i.e. salt, sulfur, or ammonia areas) which may affect the
product warranty.
6.2 Mounting Wall-mounting Bracket
Danger
To avoid electrical shock or other injury, please inspect existing
electronic or plumbing installations before drilling holes.
Procedure:
1) Use the wall-mounting bracket as a template and mark the positions of the drill holes,
then drill the 4 holes accordingly, as per FIG. 6-6. (Diameter = 11mm, Depth ≥ 55mm).
Note: The external dimensions (W × H) of inverters are shown as dash line in FIG. 6-6.
331 45 143
76 160
375 45 152
53 250
CSI-3K-S22002-ED (312 x 517mm) CSI-5K-S22002-ED (355 x 572mm)
FIG.6-6 Drilling Positions

6 Installation
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2) Knock expansion anchors into the corresponding four holes, and then fix the
wall-mounting bracket to the wall with self-tapping screws, as per FIG. 6-7 & FIG. 6-8.
FIG.6-7 Install Expansion Anchors FIG.6-8 Fix Wall-mounting Bracket
6.3 Installing Inverter
Note: Must make sure the wall-mounting bracket has mounted on the wall firmly before
install inverter.
Procedure:
1) Hang the inverter on wall-mounting bracket. Keep balance during the operation to
prevent device damage from colliding with walls or obstacles, as per FIG. 6-9.
FIG. 6-9 Hang the Inverter on Wall-mounting Bracket
2) Use two safety bolts to fix both sides of inverter to ensure the inverter fixed to the wall
firmly, as per FIG. 6-10.
FIG. 6-10 Fix Both Sides of Inverter

7 Electrical Connection
12 / 30
7 Electrical Connection
7.1 Safety
Danger
Danger to life due to lethal voltages in the inverter!
Before performing any work on the inverter, must disconnect both AC and
DC sides.
Warning
Damage to electronic components may happen due to electrostatic
discharge. Take appropriate ESD precautions when replacing and
installing the inverter.
7.2 Network Diagram
Electrical connections of inverter include grounding connection, PV array connection, AC
connection and communication connection.
L
N
PE
PV array Inverter Breaker Fuse Electricity meter
FIG. 7-1 Network Diagram
7.3 Meter/CT Connection (Optional)
The inverter has integrated export limitation functionality. To use this function, a power
meter or a CT must be installed.
7.3.1 Meter connection
If use the meter, it shall be installed in the grid side, shown as FIG. 7-2.
LL' NN'
5678
L N PE
L
N
PE
L N PE
Load
~
CT/ Meter
FIG. 7-2 Meter Connection in Grid

7 Electrical Connection
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7.3.2 CT connection
If use the CT, it shall be fitted around the live conductor on the grid side of the main
incoming consumer unit, shown as FIG. 7-3. Use the direction flow indication arrow on
the CT to ensure it is fitted in the correct orientation.
Note: The arrow shall be pointing towards the grid, not the load.
L N PE
L
N
PE ~
CT
CT/METER
L N PE
Load
FIG. 7-3 CT Direction
7.4 Cable Description
Cable Name
Cable Type
Conductor
Cross-Sectional Area
Outer Diameter
DC input cable
PV cable, above 600V.
4~6mm2
5.5~7.4mm
AC output cable
Three cores outdoor cable
with copper conductor.
4~6mm2
10~14mm
Signal cable
Two cores cable.
0.2-0.75mm2 (24~18AWG)
3.5~5.5mm
PE cable
Single core outdoor cable with
copper conductor.
4~6mm2
N/A
Note: No cable is supplied.
7.5 Wiring PE Cable
To achieve ground protection purpose, the inverter must be connected to the AC
grounding conductor of the utility grid via PE cable.
Warning
Because of the transformerless design, the DC positive pole
and DC negative pole of PV arrays cannot do grounding.
Note: The PE point at the AC output point is used only as a PE equipotential point, and
cannot substitute for the PE point on the enclosure.
Procedure:
1) Insert the grounding conductor into the suitable terminal lug and crimp the contact.
2) Fix terminal lug on external ground point by screw M4x10. Torque: 1.4 N.m.

7 Electrical Connection
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FIG. 7-4 External Grounding Point Position
7.6 Wiring AC Output
Warning
To ensure the inverter can be safely disconnected with load, must install a
separate single-phase circuit-breaker or other load disconnection unit for
each inverter.
Note: The inverter is equipped with integrated RCM (Residual current
operated monitor) and RCD (Residual current protective device). The rated
residual current of the circuit breaker must be over 300mA when the AC
circuit breaker with RCM function selected.
Notice
When using inverter comply with VDE-AR-N 4105:
The total capacity of PV-inverter system cannot exceed 13.8KVA, and the
adjustment function of inverter's displacement power factor must comply
with VDE-AR-N 4105.
When using inverter comply with CEI 0-21:
The total capacity of PV-inverter is more than 3KW and less than or equal
6KW, the inverter's displacement power factor is adjustable between 0.95
leading to 0.95 lagging, and do not need external SPI.
The total capacity of PV-inverter is more than 6KW, the inverter's
displacement power factor is adjustable between 0.9 leading to 0.9
lagging, meanwhile need external SPI.
Install an independent two-pole circuit breaker at the output side of the inverter for
protection, the recommended AC circuit-breaker specifications are as follows:
Inverter type
AC circuit-breaker specifications
CSI-3K-S22002-ED
25A
CSI-5K-S22002-ED
32A
Recommend AC cable length:
Inverter type
Conductor cross section 4.0mm2
(Allowed Max. length)
Conductor cross section 6.0mm2
(Allowed Max. length)
CSI-3K-S22002-ED
53 (m)
79 (m)
CSI-5K-S22002-ED
29 (m)
43 (m)
AC wiring procedure:

7 Electrical Connection
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The grid connection is established by using three-core wire (L, N, and PE, as per FIG. 7-5).
FIG. 7-5 AC Connector
The AC connector is made of four components: pressure screw, sealing ring, threaded
sleeve, and socket element.
Pressure Screw Sealing Ring Threaded Sleeve Socket Element
FIG. 7-6 Structure of AC Connector
AC connectors have two types, EXCEEDCONN type or DEVALAN type, follow-up
procedure:
1) Strip the cable’s jacket, and then adjust the relative length of L, N and PE cables, to
make the length of PE cable is at least 5mm longer than L and N ones, as per FIG. 7-7.
30.0
25.0
PE
N
L
50.0
45.0
PE
N
L
EXCEEDCONN type DEVALAN type
FIG. 7-7 Adjust the Cable Length
2）When using flexible cables, the conductor must be connected with suitable core end
ferrules according to DIN 46228-4, as per FIG. 7-8.
8.0 L N PE
FIG. 7-8 Crimp the Three-core’s Ferrule
Insert the L, N, and PE conductors into the corresponding terminals of the socket
element (as per FIG. 7-9), then tighten the screws firmly by screwdriver.

7 Electrical Connection
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EXCEEDCONN type (Torque 0.8N.m）:
PE L
N
L
N
PE
A
AA-A
DEVALAN type (Torque 1.4N.m）:
L
N
PE
B
BB-B
N
PE
L
FIG. 7-9 AC Terminal Positions
3) Push the threaded sleeve into the socket element, screw the press screw tightly.
EXCEEDCONN type DEVALAN type
FIG. 7-10 Tightening the AC Connector
4) Finally, insert the AC connector into the corresponding AC receptacle on the inverter.
Pay attention to the polarities to make sure the correct assembling.
2
1
EXCEEDCONN type DEVALAN type
FIG. 7-11 Installing the AC Connector
7.7 Wiring DC Input
Note: The DC connectors are in paired (negative and positive ones). Pay attention to the
polarities when assembling.

7 Electrical Connection
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FIG. 7-12 DC Input Connectors
7.71 Requirement for DC input
This single-phase inverter is equipped with one / two MPP trackers.
Requirements for PV module strings:
1) Same type.
2) The power, voltage (startup and open-circuit voltage) and operating current of each PV
strings must meet the allowable value of the inverter.
Note: Consider temperature coefficient of the PV modules.
Check the inverter specification in section ANNEX B.
7.72 Wiring
There are two types of DC connectors—MC4/H4, check the connector’s type for
completeness before assembling.
Negative Coupler & Contactor Pin Positive Coupler & Contactor Pin.
FIG. 7-13 Structure Illustration of DC Connector
Procedure:
1) Strip the insulation of cable to about 7.5mm with the wire stripper tool. Note do not
damage the conductors when do the stripping, as per FIG. 7-14.
2) Place the contact around the conductors of the stripped cable, then crimp the contact
with wire crimping pliers, as per FIG. 7-15.
Ensure the conductors completely wrapped without loosening or damage.