CanadianSolar CSI-25KTL-GS-FL User manual

CANADIAN SOLAR INC.
Global Headquarters:
$ ~ CanadianSolar
545 Speedvale Avenue, West Guelph, Ontario N1 K 1 E6, Canada
Tel:
[phone]
Sales Inquiries Email: [email protected]
Technical Inquiries Email: [email protected]
CANADIAN SOLAR (USA), INC.
North America Headquarters:
3000 Oak Road, Ste 400, Walnut Creek, CA 94596
Tel:
[phone]
Sales Inquiries Email: [email protected]
Technical Inquiries Email: [email protected]
Part No: 9.0020.0334
AO
This manual is subject to change without prior notification. Copyright is
reserved. Duplication of any part
of this issue is prohibited without written
permission.
$ ~ CanadianSolar
CSI SERIES GRID-TIED PV Inverter
CSI-25KTL-GS-FL & CSI-30KTL-GS-FL
CSI-36KTL-GS-FL & CSI-40KTL-GS-FL
CSI-40KTL-GS
INSTALLATION AND OPERATION MANUAL
VERSION 1.2
.:.'>! CanadianSolar
D
0 0 0 0
CANADIAN SOLAR INC.
Canada, 545 SpeedvaleAvenue West, Guelph, Ontario, Canada N1 K 1E6
www.canadiansolar.com

~ ~ CanadianSolar ~ ~ CanadianSolar
Important notes
• Product specifications are subjectto change without notice. Everyattempt has been made
to make this document complete, accurate and up-to-date. Individuals reviewing this
document and installers
or service personnel are cautioned, however, that Canadian Solar
reserves the rightto make changes without notice and shall not be responsible
for anydamages, including indirect, incidental or consequential damages caused by reliance
on the material presented including, but not limited to, omissions, typographical errors,
arithmetical errors
or listing errors in the material provided in this document.
• Canadian Solar accepts no liability
for customers' failure to complywith the instructions
for correct installation and will not be held responsible for upstream or downstream systems
Canadian's equipment has supplied.
• The customeris fully liable
for any modifications made to the system; therefore, any hardware
or software modification, manipulation, or alteration notexpressly agreed with the
manufacturershall result in the immediate cancellation
of the warranty.
• Given the countless possible system configurations and installation environments, itis
essential to verify adherence to the following:
• There is sufficient space suitable
for housing the equipment.
• Airborne noise produced depending on the environment.
• Potential flammability hazards.
• Canadian solar will not be held liable
for defects or malfunctions arising from:
• Improper use
of the equipment.
• Deterioration resulting from transportation
or particularenvironmental conditions.
• Performing maintenance incorrectly
or notatall.
• Tampering
or unsafe repairs.
• Use
or installation by unqualified persons.
• This productcontains lethal voltages and should be installed by qualified electrical
or service
personnel having experience with lethal voltages.
.1.

Contents
~ ~ CanadianSolar
1. Introduction ···························································································································································· 5
1.1 Product Description ····················································································································· 5
1.2 Unpacking and storage
············································································································ 6
1.2.1 Storage
······························································································································ 7
2. Safety instructions ······································································································································· 8
2.1 Safety symbols ······························································································································ 8
2.2 General safety instructions
··································································································· 8
2.3 Notice
for use ································································································································· 9
2.4 Ground Fault Circuit Interrupt(GFCI)
··········································································· 10
3. Installation ···························································································································································· 11
.2.
3.1 Environmental considerations ····························································································· 11
3.1.1 Select a location for the inverter ········································································ 11
3.1.1.1 Examples of correct and incorrect installations ······························ 12
3.1.2 Otherenvironmental considerations
............................................................... 12
3.1.2.1 Consulttechnical data
···················································································· 12
3.1.2.2 Vertical wall installation
················································································· 12
3.1.2.3Avoiding
direct sunlight ················································································· 12
3.1.2.4
Air circulation
...................................................................................................... 12
3.1.2.5 Flammable substances
················································································· 13
3.1.2.6 Living area
··············································································································· 13
3.2 Product handling
························································································································ 13
3.3 Mounting the
inverter ··············································································································· 14
3.4 Wiring box configuration
······································································································ 17
3.5 DC connection ······························································································································ 17
3.5.1 DC connection high voltage danger and overcharging notice 18
3.5.2 String sizing ····················································································································· 19
3.5.3 Recommended fusing section for each channel or connection ······ 19
3.5.3.1 Maximum allowable amperage perfuse and channel ··············· 20
3.5.4 Process of connecting DC wires to terminals .......................................... 20
3.5.4.1 Using spring terminal ···················································································· 20
3.6 Making connections to theAC side of the inverter ................................................ 21
3.6.1 Connecting the inverter to the utility grid ··················································· 21
3.6.2 Wiring procedure ········································································································· 22
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Contents
3.7 External ground connection point ···················································································· 23
4. Communication & Monitoring ············································································································ 24
4.1 RS485 ················································································································································ 25
4.1.1 Wiring a single inverter and daisy chain inverter ······································· 25
4.1.2 Maximum allowable inverters using RS485 ................................................ 25
4.1.3 120-ohm (0) resistor placement ········································································ 25
5. Commissioning ················································································································································ 26
5.1 Selecting the appropriate grid standard ········································································ 26
5.1.1 Verifying grid standard for country of installation ···································· 26
5.2 Changing the grid standard ··································································································· 26
5.2.1 Procedure to set the grid standard ·································································· 26
5.3 Setting a custom grid standard ·························································································· 29
5.4 Preliminary checks ····················································································································· 30
5.4.1 DC Connections ············································································································ 30
5.4.2AC Connections ············································································································ 30
5.4.3 DC configuration ········································································································· 30
5.4.3.1 voc
........................................................................................................................... 30
5.4.3.1.1 Checkstring voltage ···················································································· 30
5.4.3.2 Leakage to ground
....................................................................................... 31
5.4.3.2.1 Detection of leakage to ground
......................................................... 31
5.4.4AC configuration
5.4.4.1 Measure VAC
...................................................................................................... 31
................................................................................................ 31
5.4.4.2 Phase rotation test ······················································································· 32
5.4.5AC Secure inverter wiring box ········································································ 32
6. Normal operation ······································································································································· 33
6.1 Start-up procedure ·················································································································· 33
6.2 Stopping procedure ··············································································································· 33
6.3 Optional 7" LCD front panel display interface ......................................................... 34
6.3.1 Main menu ····················································································································· 36
6.4 Sub-menu information ·········································································································36
6.5 Settings ··········································································································································37
6.5.1 Setting time
··················································································································38
6.5.2 Setting inverter address for communications
·······································38
.3.

Contents
~ ~ CanadianSolar
6.5.3 Setting language ······································································································ 39
6.5.4 Screen brightness control ················································································· 39
6.5.5 Current system version ······················································································· 40
6.6Advanced Info- Technicians only ·············································································· 40
6.6.1 Alarm message
......................................................................................................... 41
6.6.2 Operational parameters
....................................................................................... 42
6.6.3 Current hardware and software versions
................................................ 42
6.6.4 Communication data ····························································································· 43
6.6.5 Daily energy information ···················································································· 43
6.6.6 Monthly energy ············································································································ 44
6.6.7 Yearly energy ··············································································································· 44
6.6.8 Total energy ·················································································································· 45
6.6.9 Daily records·························································································································· 45
6.7Advanced settings- Technicians only ····································································· 46
6.7.1Selectgridstandard ································································································ 46
6.7.2 Grid ON/OFF ··············································································································· 49
6.7.3 Power control ··············································································································· 49
6.7.4 Clear energy and restore factory settings ................................................... 50
6.7.5 Calibrate ··························································································································· 50
6.7.6 Reset password ············································································································ 51
6.8 Arc fault current interrupt {AFCI)function ·································································· 52
7. Maintenance ························································································································································· 54
7.1 For inverter model with Fan ··································································································· 54
8. Troubleshooting
............................................................................................................................................. 57
8.1 Current alarm- front LCD panel
....................................................................................... 57
8.1.1 Running messages ································································································ 57
8.2Alarm history ································································································································· 57
8.2.1 Viewing alarm history ····························································································· 57
8.3 Errormessages ··························································································································· 57
8.3.1 Troubleshooting guide ····························································································· 57
9. Specifications ··················································································································································· 61
10. Appendices ······················································································································································ 64
.4.
~ ~ CanadianSolar
1. Introduction
1.1 Product Description
Canadian Solar U.S. Three Phase Inverters convert DC powerfrom the photovoltaic {PV) array
into alternating current (AC) powerthat can satisfy local loads as well as feed the power
distribution grid.
This manual covers the Canadian Solar U.S. Three Phase Inverter models listed below:
CSI-25KTL-GS-FL CSI-30KTL-GS-FL CSI-36KTL-GS-FL CSI-40KTL-GS-FL CSI-40KTL-GS
Figure 1.1 Frontview
Hole
COM
Vent
DC Switch
AC Swich
DC Knockout
~
Communication Knockout AC Knockout
Figure 1.2 Bottom view
.5.

2. Safety Instructions
~ ~ CanadianSolar
Improperuse may result in electric shock hazards or burns. This product manual contains
importantinstructions that are required to be followed during installation and maintenance.
Please read these instructions carefully before use and keep them in an
easily locatable place
for future reference.
2.1 Safety symbols
Safetysymbols used in this manual, which highlight potential safety risks and importantsafety
information, are listed below:
WARNING
Symbol indicates important
safety instructions, which if not correctly
followed, could result in serious
injury or death.
NOTE
Symbol indicates
important safety instructions, which if not correctly
followed, could result in some damage
or the destruction of the inverter.
CAUTION, RISK OF ELECTRIC
SHOCK
Symbol indicates important safety instructions, which if not correctly
followed, could result in
electric shock
CAUTION, HOT SURFACE
Symbol indicates
safety instructions, which if not correctly
followed, could result in burns.
2.2 General safety instructions
.8.
WARNING
Do
not connect PVarray positive(+) or negative(-) to ground- doing
so could cause serious damage to the inverter.
WARNING
Electrical installations
must be done in accordance with local and
national electrical
safety standards.
~ ~ CanadianSolar
2. Safety Instructions
WARNING
To reduce the risk of fire, branch circuit over-current protective
devices (OCPD) are required
for circuits connected to the Inverter.
CAUTION
The PV
array (solar panels) supplies a DC voltage when exposed to light.
CAUTION
Risk
of electric shockfrom energy stored in the inverter's capacitors.
Do
not remove cover until five (5) minutes after disconnecting all sources
of supply has passed, and this can only be done bya service technician.
The warranty may be voided
if any unauthorized removal of cover occurs.
CAUTION
The inverter's surface temperature can reach up to 75°C (167°F}.
To avoid
risk
of burns, do not touch the surfacewhen the inverter is operating.
Inverter
must be installed out of the reach of children.
WARNING
The
inverter can only accept a PV array as a DC input. Using any other
type of DC source could damage the inverter.
2.3 Notice for use
The inverterhas been constructed according to applicable safety and technical guidelines.
Use the inverterin installations that meet the following requirements ONLY:
1.The invertermust be permanently installed.
2.The electrical installation must meetall the applicable regulations and standards.
3.The invertermust be installed according to the instructions stated in this manual.
4.The system design must meet
inverter specitications.
To start-up the inverter, the Grid Supply Main Switch (AC) must be turned on, BEFORE the DC
Switch is turned on.
To stop the inverter, the Grid Supply Main Switch (AC) must be turned off
before the DC Switch is turned off.
.9.

2. Safety Instructions
~ ~ CanadianSolar
2.4 Protection Circuitry and Controls
To meet relevant codes and standards, the Canadian Solar three phase inverterline is
equipped with protective circuitry and controls. These includeArc Fault Circuit Interrupter
(AFCI) and Anti-Islanding Protection.
Arc Fault Circuit Interrupter AFCI:
Edition 2011 of the National Electrical Code®, Section 690.11, requires that all PV plants
attached to a building are fitted with a means
of detecting and interrupting serial electric
arcs in the PV wiring and array. An electric arcwith a power
of 300W or greatermust be
interrupted bythe AFCI in the time specified by UL
16998. A triggeredAFCI fault may only
be reset manually.
After clearing the source of the fault, theAFCI can be deactivated via
the inverterfront panel interface.
Anti-Islanding Protection:
.10.
Islanding is a condition where the invertercontinues to produce powereven when the grid
is not present. Circuitry, along with firmware, has been designed to determine
if the grid is
present byadjusting the outputfrequency
of the inverter. In the case of a 60Hz resonant
system where the
inverter is partially isolated from the grid, the inverterprogramming can
detect
if there is a resonant condition or if the gird is actually present. It can also
differentiate between inverters operating in parallel and the grid.
~ ~ CanadianSolar
3. Installation
3.1 Environmental considerations
3.1.1 Select a location for the inverter
When selecting a location for the inverter, consider the following:
• The temperature ofthe inverter heat-sink
can reach 167°F (75C).
• The inverter
is designed to work in an ambient temperature range between -13•F to 140•F
(-26-60C).
• Ifmultiple inverters are installed on site, a minimum clearance of20 inches should be kept between
each inverter
and all other mounted equipment. The bottom ofthe inverter should be at least 20
inches above ofthe ground or floor (see Figure
3.1 ).
• The LED status indicator lights and the LCD located on the inverter's front panel should not be
blocked.
• Adequate ventilation must
be present ifthe inverter is to be installed in a confined space.
~ I ~ I
20in 20in
~ I ~ I
Figure 3.1 -Distances required between inverters
NOTE
Nothing should be stored on
or placed againstthe inverter .
.11.

3. Installation
~ ~ CanadianSolar
3.1.1.1 Examples of correct and incorrect installations
I I I
u -b- -b- -b-
/ ' / '
~/I' I I
0
NEMA4X
0
..../
I 0
X
X X
NOTE
Units with a fan may be mounted at
15-90 degrees off horizontal.
3.1.2 Otherenvironmental considerations
3.1.2.1 Consulttechnical data
J
..../
Consultthe specifications section (section 9) for additional environmental conditions (protection
rating, temperature, humidity, altitude, etc.).
3.1.2.2 Vertical wall installation
Canadian Solar inverters are typically convection cooled and must be mounted vertically
(90 +/- 5 degrees offhorizontal). Units with a fan may
be mounted at 15- 90 degrees offhorizontal.
3.1.2.3Avoiding directsunlight
Installation
of the inverterin a location exposed to direct sunlight should be avoided.
Direct exposure to sunlight could cause:
• Poweroutput limitation (with a resulting decreased energy production by the system).
• Premature wear
of the electrical/electromechanical components.
• Premature wear
of the mechanical components (gaskets) and of the userinterface.
3.1.2.4Air circulation
Do not install in small, closed rooms where aircannot freely circulate.
To prevent overheating,
always ensure thatthe airflow around the
inverter is not blocked.
.12.
~ ~ CanadianSolar
3. Installation
3.1.2.5 Flammable substances
Do not install nearflammable substances. Maintain a minimum distance
of three (3) meters
(1 0 feet) from such substances.
3.1.2.6 Living area
Do not install in a living area where the prolonged presence
of people or animals is expected.
Depending on where the
inverter is installed (forexample: the type of surface around the
inverter, the general properties
of the room, etc.) and the quality of the electricitysupply, the
sound level from the invertercan be quite high.
3.2 Product handling
Please review the instructions below for handling the inverter:
1.The red circles below denote cutouts on the product package. Push in the cutouts to
form handles
for moving the inverter (see Figure 3.2).
t '":;: - ::::~
I I I I
,, ______ , :_;
.... _______ ...
Figure 3.2 Handles used to move the invertershown circled in red
2.Two people are required to remove the inverter from the shipping box. Use the handles
integrated into the heatsink to remove the inverterfrom the box (see Figure 3.3).
.13.

5. Commissioning
~ ~ CanadianSolar
5.1 Selecting the appropriate grid standard
5.1.1 Verifying grid standard for country of installation
Canadian
Solar inverters are used worldwide and feature presetstandards for operating on any
grid. Although the grid standard is
set atthe factory, it is essential the grid standard be verified
for the country of installation before commissioning.
The menu
for changing the grid standard or for creating a custom standard is accessible as
described in Section
6.7 and below.
WARNING
Failure to set the correct grid standard could result in
improper operation
of the inverter, inverter damage or the inverter to not operate at all.
5.2 Changing the grid standard
5.2.1 Procedure to setthe grid standard
.26.
NOTE
This operation is
for service technicians only. The inverter is customized
according to the local standard before shipping. There should be no
requirement to
set the standard.
NOTE
The "User-Def" function can
only be used by the service engineer and
changing the protection level
must be allowed by the local utlilty.
1. From the main screen on the display, select ENTER. There are 4 submenu options,
use the UP/DOWN arrows to highlightADVANCED SETTINGS. Press
enter to select.
Menu 2015-02-23 19 35
Information
-
Figure 5.1
~ ~ CanadianSolar
5. Commissioning
2. The LCD screen will showthat a password is required. The defaultpassword is "0010",
press the DOWN key to move cursor, press the UP key to change the
highlighted digit.
Password 2015-02-23 19 35
Please InputThe Current Password
X X X
YES=<ENT> NO=<ESC>
Figure 5.2
3. Use the UP/DOWN keys to highlightthe SELECT STANDARD option. Press enter to
select.
Advanced
Set. 2015-02-23 19 35
SelectStandard
Grid ON/OFF
PowerControl
Clear Energy
Restore Settings -
Figure 5.3
.27.

5. Commissioning
~ ~ CanadianSolar
4. Selectthe grid standard for the country of installation (see Figure 3).
Select Standard 2015-02-23 1935
Select Standard
MIJiftiM
YES=<ENT> NO=<ESC>
Figure 5.4
Press the UP or DOWN key to selectthe standard (AS4777, VDE41 05, UL-1741, G59/3, CQC,
User-Deffunction, etc.). Press the ENTER key to confirm the setting. Press the ESC key to
cancel changes and return to the previous menu.
Ul1741 is defaultsetting
for the U.S. and Canada markets. UL1741-Ais the standard for
inverterswith AFCI function.
.28.
5. Once the grid standard has been selected, select SAVE AND SEND on the following
screen to save the newgrid setting.
Save/Cancel 2015-02-23 19 35
•Mh¥4
YES=<ENT> NO=<ESC>
Figure 5.5
~ ~ CanadianSolar
5. Commissioning
5.3 Setting a custom grid standard
WARNING
• Failure to setthe correct grid standard could result in improper operation
of the inverter, inverter damage or the inverter to not operate at all.
• Only certified personnel should
set the grid standard.
• Only
set the grid configuration that is approved by your location and
national grid standards.
1. Please referto section 6.7 "Advanced Settings"
for procedures to create a custom grid
configuration
for User-Defmenu option.
5.4 Preliminary checks
WARNING
High Voltage.
AC and DC measurements should be made
only be certified electricians.
5.4.1 DC Connections
Verify DC connections.
1. Lightlytug on each DC cable to ensure it is
fully captured in the terminal.
2. Visuallycheck
for any wire strands that may not be inserted in the terminal.
3. Checkto ensure the terminal screws are the correcttorque.
5.4.2AC Connections
VerifyAC connections.
1. Lightlytug on each AC cable to ensure it is
fully captured in the terminal.
2. Visually check
for any wire strands that may not be inserted in the terminal.
3. Checkto ensure the terminal screws are the correct torque.
5.4.3 DC configuration
Verify DC configuration.
5.4.3.1 VOC and Polarity
MeasureVOC, and check string polarity.
.29.

5. Commissioning
~ ~ CanadianSolar
.30.
5.4.3.1.1 Check string voltage
To measure the open circuit voltage (VOC) and polarity of the individual strings,
perform the following steps:
WARNING
When the fuse holders are closed, parallel strings on the same MPPT are
connected together.
If there is a voltage difference between the parallel
strings such as different string lengths, current will flow between the
parallel strings. Opening and closing the fuse
holder in this instance is the
same as opening and closing
under load. Damage to equipment and /or
injuryto personnel may occur.
1. Ensure that all fuse holders are open.
2. Connectthe positive lead
of the meterto the positive string cable of the string under
test. Connectthe negative lead
of the meterto the negative string cable of the string
undertest.
3. Measure the voltage present between the positive and negative pole of each string.
If the open circuit voltage of the string is nearthe maximum value accepted by the
inverter, verify the string length. Lowambienttemperatures cause an increase in
the string voltage causing damage to the inverter.
4. Checkthe polarity
of the string. All digital meters have a negative("-") indicatorthat
indicateswhen a voltage is negative; in this case a string connected in reverse polarity.
WARNING
Input voltages higher than the maximum value accepted by the inverter
(see "Specifications" in Section 9) maydamage the inverter.
Although Canadian
Solar inverters feature reverse polarity protection,
prolonged connection in reverse polarity maydamage these protection
circuits
and/or the inverter.
5.4.3.2 Leakage to ground
Measure leakage to ground.
~ ~ CanadianSolar
5. Commissioning
5.4.3.2.1 Detection of leakage to ground
Canadian
Solar inverters are transformerless and do not have an arrayconnection to ground.
Any measurement of a fixed voltage between ground and eitherthe positive or negative string
voltage indicates a leakage (ground fault) to ground and must be corrected priorto energizing
the inverter
or damage to the invertermay result.
To measure leakage to ground, perform the following steps:
1. Ensure that all fuse holders are open.
2. Ensure that neithernegative
nor positive DC conductors are connected to the ground
strip.
3. Measure each string positive connection to ground.
4. Measure each string negative connection to ground.
5. Verify the voltage is "floating", nota consistentvoltage to ground. Make sure you notice
the units
of the measurement. mV is notthe same as V.
6. Do not close the fuse holder and connect the strings if a leakage to ground has been
detected. Improperoperation and damage to the inverter may result.
5.4.4AC configuration
VerifyAC configuration.
5.4.4.1 Measure VAC and frequency
MeasureVAC and verify voltage is within local grid standards.
1. Measure each phase to ground (L-G).
2. Measure phases to the other phases in pairs (L-L). PH A to PH B, PH Bto PH C and
PH Cto PHA.
3. If the meter is equipped, measure the frequency of each phase to ground.
4. Ensure each measurement is within local grid standards and the inverterspecifications
as noted in Section 9 "Specifications".
.31 .

6. Normal operation
~ ~ CanadianSolar
6.3.1 Main menu
There are four sub-menus in the main menu as shown in Figure 6.4. Press ESC from the home
screen to access this menu.
Menu 2015-02-23 1935
~ .... .. .................... ~
~ Information !
-
iffi@!.i41MN
Figure 6.4 Foursub-menus
6.4 Sub-menu "Information"
The inverter LCD provides access to operational data and information (see Figures 6.5 and
6.6). Select the "Information" sub-menu. Move to the next page by scrolling UP or DOWN.
.36.
Information
2015-02-23 19 35
Power:
V_DC1 :
V_DC2:
V_DC3:
V_DC4:
V_A:
V_B:
v_c:
30000W
500.2V
500.5V
499.9V
502.6V
232.0V
231.0V
230.5V
I_DC1:
I_DC2:
I_DC3:
I_DC4:
I_A:
I_B:
I_C:
1/2
Figure 6.51nformation (screen 1)
15.90A
15.70A
15.30A
16.10A
43.5A
43.7A
43.4A
~ ~ CanadianSolar
6. Normal operation
Information 2015-02-23 19 35
Status : Generating
Total Energy :0003687kWh
This
Year: 0000014kWh
Last
Year: 0000001 kWh
This Month : 0508kWh
Last
Month: 2081kWh
Today : 0071.6kWh
Yesterday : 000204kWh
Frequency : 50.01 Hz
Carbon Offset : 0003.67to
Efficiency:
99.99%
2/2
Figure 6.6 Information (screen 2)
6.5 Sub-Menu "Settings"
Figure 6.7 shows the interface as it is displayed when the Settings menu is selected. Press the
UP or DOWN key to select different options, and press the ENTER key to enter the submenu.
Settings 2015-02-23 19 35
-
-
Figure 6.7 Settings menu
.37.