System Decommissioning; Disconnecting The Inverter - Sungrow SG5KTL-MT User Manual

System Decommissioning

8

8.1 Disconnecting the Inverter

For maintenance or other service work, the inverter must be switched off.
Proceed as follows to disconnect the inverter from the AC and DC power sources.
Lethal voltages or damage to the inverter will follow if otherwise.
step 1 Disconnect the external AC circuit breaker and secure it against reconnection.
step 2 Rotate the DC switch to the "OFF" position and then disconnect all of the PV string
inputs.
Skip performing step 2 when the actual device is not equipped with DC switch.
step 3 Wait about ten minutes until the capacitors inside the inverter completely discharge.
step 4 Ensure that the DC cable is current-free via a current clamp.
step 5 Insert a MC4 wrench into the notch and press the wrench with an appropriate force to
remove the DC connector.
step 6 ( ( O O p p t t i i o o n n a a l l ) ) Remove the block with the Phillips screwdriver.
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