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Installation Manual
SMA Solar Technology AG
DC-CMB-IA-U10-xx-en
9 Disconnectiong
9 Disconnecting
Danger to life due to electric shock when touching live components of the Combiner Box
• Observe the following safety rules when disconnecting:
– Disconnect from voltage sources.
– Ensure that the device cannot be reconnected.
– Check that no voltage or current is present.
– Ground and short-circuit.
– Cover or isolate any adjacent live components.
Risk of burns from touching hot components
• Wear personal safety equipment when working on the device.
Procedure:
1.
Switch off the DC load-break switch. This ensures that there is no current flow through the Combiner Box.
2.
Disconnect the Sunny Central from voltage sources (see Sunny Central installation manual).
If there are fuses in the Sunny Central, remove them. Use the LV/HRC fuse handle to do this.
or
If there are no fuses in the Sunny Central, remove the fuses in the DC main distributor.
3.
Only open the fuse holders in the Combiner Box with power switched off.
