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9 Disconnecting, Dismantling
and Disposing the PCS
9.1 Disconnecting the PCS
For maintenance work or any service work, PCS must be switched off. In
normal operation, switching off is not necessary.
In order to disconnect the PCS from the AC and DC power sources, you should
proceed as follows. Otherwise you will be exposed to lethal voltages or the PCS
will be damaged.
Step 1 Disconnect the external AC circuit breaker and prevent it from
reconnecting.
Step 2 Turn off the upstream DC circuit break. Rotate BAT switch at the side of
PCS to the “OFF” position.
Please strictly follow the sequence of the above procedures. PCS will
not work normally if otherwise.
Step 3 Wait about 5 minutes until the capacitors inside the PCS have
discharged.
Step 4 Loose the six screws on the lower connection cabinet and then remove
the lid.
Step 5 Measure AC voltage to ground at the AC terminal to confirm AC output of
PCS at the AC circuit breaker is voltage free.
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