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9 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-10 61
9 Disconnecting the Inverter from Voltage Sources
Prior to performing any work on the inverter, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
NOTICE
Destruction of the measuring device due to overvoltage
Only use measuring devices with a DC input voltage range of 1000V or higher.
Procedure:
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. Set the DC load-break switch of the inverter to O.
3. Wait until the LEDs have gone out.
4. Use a current clamp to ensure that no current is
present in the DC cables.
0.0A
5.
DANGER
Danger to life due to electric shock when touching exposed DC
conductors or DC plug contacts if the DC connectors are damaged or
loose
The DC connectors can break or become damaged, become free of the DC cables, or no
longer be connected correctly if the DC connectors are released and disconnected
incorrectly. This can result in the DC conductors or DC plug contacts being exposed.
Touching live DC conductors or DC plug connectors will result in death or serious injury due
to electric shock.
Wear insulated gloves and use insulated tools when working on the DC connectors.
Ensure that the DC connectors are in perfect condition and that none of the DC
conductors or DC plug contacts are exposed.
Carefully release and remove the DC connectors as described in the following.
61


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