Electrical Inspection; Commissioning Procedure - CanadianSolar CSI-75K-T40001-E Quick Installation Manual

5 Commissioning Inverter

5.1 Electrical Inspection

Table 5-1 Inspection before Commissioning
No.
The inverter DC switch and external circuit breaker are disconnected
1
The inverter should be accessible for operation, maintenance and service.
2
Nothing is left on the top of the inverter.
3
The inverter is correctly connected to the external devices.
4
The cables are routed in a safe place or protected against mechanical damage.
5
The selection of the AC circuit breaker is in accordance with the User manual and all
6
applicable local standards.
All unused terminals at the bottom of the inverter are properly sealed.
7
Warning signs & labels are suitably affixed and durable.
8

5.2 Commissioning Procedure

If all of the items mentioned above meet the requirements, proceed as follows to start up the inverter for the first time.
Step 1: Rotate the DC switch of the inverter to "ON" position.
Step 2: Connect the AC switch (if applicable) between the inverter and the grid.
Step 3: Connect the DC switch (if applicable) between the inverter and the PV string.
Step 4: Set initial protection parameters via the CSI Cloud App. If the irradiation and grid conditions meet requirements, the
inverter will normally operate.
Step 5: Observe the LED indicator to ensure that the inverter operates normally.
LED indicator
PV connection indicator
Grid connection indicator
Communications/Maintenance
indicator
Alarm indicator
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Inspection Items
LED state
At least one PV string is properly connected, and the DC input
Steady green
voltage of the corresponding MPPT circuit is at least 200V.
The solar inverter disconnects from all PV strings, or the DC input
Off
voltage of all MPPT circuits is less than 200V.
Steady green The solar inverter is in grid-tied mode.
Blinking green The solar inverter is in self-test mode or wait mode.
Off The solar inverter is not in grid-tied mode.
Blinking green The solar inverter receives communication data normally
The solar inverter has not receives communication data for 10
Off
seconds.
Steady green The solar inverter is in maintenance status
Steady red A major alarm is generated.
Blinking red A minor or warning alarm is generated.
Off No alarm
Definition
EN-Rev 75-120kW QI/V03a December, 2023. CSI Solar Co.,
Result
Yes No