Sungrow SG125HX, User Manual

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72
8
System Decommissioning
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 for disconnecting all of the PV string inputs.
step 3 Wait about 5 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 H4 PLUS wrench into the notch and press the wrench with an appropriate force
to remove the DC connector.
step 6 Ensure that the AC wiring terminals are voltage-free via a multimeter, and remove the
AC wires and communication wires.
step 7 Install the H4 PLUS waterproof plugs.
For further disconnection and reconnection instructions, please visit the
webpage of respective component manufacturer.
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8.2 Dismantling the Inverter
Risk of burn injuries and electric shock!
Do not touch any inner live parts until for at least 5 minutes after disconnecting
the inverter from the utility grid and the PV input.
step 1 Refer to
"
5 Electrical Connection
"
for the inverter disconnection of all cables in reverse
steps.
step 2 Dismantle the inverter referring to
"
4 Mechanical Mounting
"
in reverse steps.
step 3 If necessary, remove the wall-mounting bracket from the wall.
step 4 If the inverter will be reinstalled in the future, please refer to
"
3.2 Inverter Storage
"
for a
proper conservation.
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