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Technical Brief: Secondary Protection for Customer Self Supply

When zero-export is required, the Envoy-S Metered regulates Microinverter output, but secondary protection may also be required.

If zero-export is required, the Envoy-S Metered regulates the Enphase Microinverter output to ensure that the PV production is not exported to the grid. Some utilities may require that a secondary protection circuit is provided. In that case, the normally opened contact within the Envoy-S Metered can be used to drive a contactor to provide this secondary level of protection.

Related Categories: Envoy