Commissioning Inverter; Electrical Inspection; Commissioning Procedure - CanadianSolar CSI-75K-T40001-E User Manual

If the DC input power cable is reversely connected and DC switches are set to ON, do not
immediately turn off the DC switches or reconnect the positive and negative connectors.
Otherwise, the device may be damaged. The caused device damage is not covered under any
NOTICE
warranty. Wait until the solar irradiance declines at night and the PV string current reduces to
below 0.5 A. Then, turn off the three DC switches, remove the positive and negative connectors,
and rectify the connection of the DC input power cable.

6 Commissioning Inverter

6.1 Electrical Inspection

1) The inverter DC switch and external circuit breaker are disconnected
2) The inverter should be accessible for operation, maintenance and service.
3) Nothing is left on the top of the inverter.
4) The inverter is correctly connected to the external devices, and 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 this manual and all applicable local standards.
6) All unused terminals at the bottom of the inverter are properly sealed.
7) Warning signs & labels are suitably affixed and durable.

6.2 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.
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FIG 5-29 DC switch
FIG 5-31 Connect the PV connectors to the inverter
FIG 5-30 Check the polarity of PV string
6 Commissioning Inverter
V
O
mV
V
A
V
mA
OFF
礎