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Involar MAC250 - 7 Disconnecting from PV Module

Involar MAC250
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Version 4 Rev 1 Apr 2011 INVOLAR Corporation Ltd. (EUR)
38
7 Disconnecting a Microinverter from the PV Module
To ensure safe disconnection of the microinverter from the PV array, it must NOT be
carried out under load conditions. Ensure the following disconnection steps are
carried out in the order shown:
1. Disconnect the AC by isolating the branch via the circuit breaker.
2. Disconnect the first AC connector in the branch circuit.
3. Cover the PV module (s) with an opaque cover.
4. Using a proved DC current test instrument, verify there is no current flowing in
the DC wires between the PV module and the microinverter.
5. Care should be taken when measuring DC currents, most clamp-on meters
must be zeroed first and tend to drift with time.
6. Disconnect the PV module DC wire connectors from the microinverter.
7. Remove the microinverter from the PV array racking.