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Opening and Closing
SMA Solar Technology AG
8.2 Disconnecting the Inverter from Voltage Sources
1. Disconnect the miniature circuit-breaker and secure against accidental or inadvertent
re-connection.
2. If a multi-function relay is connected, disconnect its supply voltage and ensure that the device
cannot be unintentionally or inadvertently reconnected.
3. If an external DC switch-disconnector is used, disconnect it.
4. If an ESS is in use, disconnect the ESS.
5. Loosen all six captive screws and remove the lower
enclosure lid. Use an Allen key (width across
flats 3) for this.
6. Use a current clamp to make sure all DC cables are
current free.
☑ If current is present, check the installation.
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Installation Manual