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[ Q-RELAY-1P-INT ]
In Enphase installations, the Q Relay (network system relay controller) acts as a physical disconnection device relay controller for single-phase installations. During specified grid abnormalities, the Q Relay disconnects the Enphase Microinverters from the AC grid, and when the voltages return to normal and the grid frequency is in the acceptable range, the Q Relay reconnects the system. The Q Relay works in series with the Envoy-S to break both line and neutral, when needed, per grid requirements.