4 Disconnecting and Reconnecting
SMA Solar Technology AG
Maintenance Manual
27
SCCPXT-E7-WA-en-37
4.2.3
Disconnecting the AC Side
1. Switch off the inverter (see Section 4.2.1, page 26).
2. Disconnect the DC side (see Section 4.2.2, page 26).
3. Externally disconnect the AC voltage of the MV transformer.
4. Switch off the AC disconnection unit in the inverter.
5. Ensure that no voltage is present.
6. Cover or isolate any adjacent live components.
4.2.4
Disconnecting the Supply Voltage at the Inverter from Voltage Sources
1. If the supply voltage is only to be disconnected upstream from the
circuit breaker, switch the circuit breaker of the supply voltage off.
2. If the supply voltage is also to be disconnected downstream from the supply voltage circuit breaker, switch the
external circuit breaker of the supply voltage off.
Tip: The external circuit breaker of the supply voltage is usually located in a subordinate distribution station.
3. Disconnect any additional external voltage.
4. Switch the motor-protective circuit-breakers of the grid monitoring
off.
Summary of Contents for SUNNY CENTRAL 1000CP XT
Page 70: ...www SMA Solar com...
