CanadianSolar CSI 23KTL-CT/US-480 User manual

PRELIMINARY
THREE-PHASE
STRING INVERTER
INSTALLATION
MANUAL - 23-28KW

Table of Contents
Before You Start .........................................................................................................................................1
Chapter 1 IMPORTANT SAFETY INSTRUCTIONS............................................................................2
Chapter 2 Overview ........................................................................................................................5
2.1 Inverter for grid-tied PV systems.......................................................................................................5
2.2 Product features..................................................................................................................................5
2.3 Product protection functions .............................................................................................................6
2.4 Circuit structure design ......................................................................................................................6
2.5 Appearance Description .....................................................................................................................7
Chapter 3 Installation .....................................................................................................................8
3.1 Recommendations before installation..............................................................................................9
3.2 Mechanical installation .................................................................................................................... 10
3.3 Electrical installation ........................................................................................................................ 22
3.3.1 DC connection................................................................................................................................ 24
3.3.2 AC and ground connection .......................................................................................................... 33
3.3.3 Communication connection......................................................................................................... 38
Chapter 4 Commissioning.............................................................................................................46
4.1 Commissioning Checklist................................................................................................................. 46
4.1.1 Mechanical installation ................................................................................................................. 46
4.1.2 Cable connections ......................................................................................................................... 46
4.1.3 Electrical check............................................................................................................................... 46
4.2 Commissioning steps....................................................................................................................... 46
Chapter 5 User Interface ..............................................................................................................48
5.1 Description of LCD panel ................................................................................................................ 48
5.2 Operation state................................................................................................................................. 49
5.3 Interface types .................................................................................................................................. 49
5.4 Menu functions................................................................................................................................. 51
5.4.1 Operation information.................................................................................................................. 51
5.4.2 Alarm............................................................................................................................................... 52

5.4.3 History................................................................................................................................................52
5.4.4 System conguration.......................................................................................................................53
5.4.5 Power dispatch .................................................................................................................................55
5.4.6 System protection parameters setup ............................................................................................55
5.4.7 System control parameters.............................................................................................................56
5.4.8 Arcing fault current interruption....................................................................................................62
Chapter 6 Operation........................................................................................................................64
6.1 Start-up .................................................................................................................................................64
6.2 Shut-down ............................................................................................................................................64
6.3 Operation mode ..................................................................................................................................64
6.4 Grid-tied power generation................................................................................................................66
Chapter 7 Maintenance and De-installation ................................................................................67
7.1 Fault shut down and troubleshooting ..............................................................................................67
7.1.1 LED fault and troubleshooting........................................................................................................67
7.1.2 LCD fault and troubleshooting .......................................................................................................67
7.2 Product maintenance..........................................................................................................................73
7.2.1 Check the electrical connection......................................................................................................73
7.2.2 Clean the air vent lter. ...................................................................................................................73
7.2.3 Replace cooling fans ........................................................................................................................73
7.2.4 Replace the inverter.........................................................................................................................74
7.3 De-installing the inverter....................................................................................................................76
Chapter 8 Technical Data................................................................................................................77
Chapter 9 Limited Warranty .....................................................................................................................81
101 Appendix: Instruction of inverter selection.....................................................................................81

Before You Start.
This manual contains important information regarding installation and safe operation of this unit. Be sure
to read this manual carefully before using.
Thank you for choosing this CSI Grid-tied PV Inverter. This PV Inverter is a high performance and highly
reliable product specically designed for the North American Solar market.
If you encounter any problems during installation or operation of this unit, rst check the user manual
before contacting your local dealer or supplier.
This user manual is applicable for the following 2 models:
CSI 23KTL-CT/US-480 and CSI 28KTL-CT/US-480.
Instructions inside this user manual will help you solve most installation and operation diculties.
Contact your local supplier if the problem still exists.
Please keep this user manual on hand for quick reference.
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Chapter 1
IMPORTANT SAFETY INSTRUCTIONS
(SAVE THESE INSTRUCTIONS)
Please read this user manual carefully before product installation. Canadian Solar reserves the right
to refuse warranty claims for equipment damage if the user fails to install the equipment according to the
instructions in this manual.
Warnings and symbols in this document:
DANGER: WARNING:
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: NOTICE:
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate
injury.
NOTICE indicates a hazardous situation which, if not avoided, could result in equipment working
abnormally or property loss.
MARKINGS ON THE PRODUCT
INSTRUCTION: HIGH VOLTAGE:
INSTRUCTION indicates important supplementary information or provides skills or tips that can be used
to help you solve a problem or save you time.
HIGH VOLTAGE indicates the product works with high voltages. All work on the product must only be
performed as described in this document.
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