8 Disconnecting, Dismantling And Disposing Of The Inverter; Disconnecting The Inverter - Sungrow SG3KTL-EC User Manual

8 Disconnecting, Dismantling and
Disposing of the Inverter

8.1 Disconnecting the Inverter

For maintenance or other service work, the inverter must be switched off. In normal
operation, switching off is not necessary.
In order to disconnect the inverter from the AC and DC power sources, proceed as
follows. Lethal voltages or damages to the inverter will follow if otherwise.
1. Stop the inverter through operating the LCD menu. For details, see "10.6
Starting and Stopping the Inverter".
2. Disconnect the external AC circuit breaker and prevent it from reconnecting.
3. Rotate the DC switch to the "OFF" position.
Please strictly follow the above procedures. Otherwise the inverter will not
function properly.
4. Wait for about ten minutes until the capacitors inside the inverter have
discharged.
5. Measure to confirm the AC output at the AC circuit breaker is voltage free.
6. Refer to "5.4.2 Assembling AC Cables to Connector" to release AC
connector out of the inverter in reverse steps.
7. Release the locking part of DC connectors by pressing on the ribbing of the
locking hooks with nipper pliers and pull it outwards.
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