Enphase, Envoy S, Envoy IQ Consumption Monitoring CT, split core current Transformers

The Enphase Envoy-S Metered™ communications gateway enables performance monitoring and remote software and firmware updates of an Enphase Microinverter System. In addition, the Envoy-S Metered provides revenue grade production data and allows for the monitoring of a site’s energy load, thus offering significant advantages over other PV system monitoring equipment. Users can access energy production
and consumption data through Enphase Enlighten™ cloud based monitoring software.
To perform both revenue grade production and energy consumption monitoring, The Envoy-S Metered requires current transformers (CTs). This document provides guidance on assessing a site’s potential for monitoring and includes additional tips to help with CT installation. For assistance with revenue grade production monitoring, please refer to the Enphase Envoy-S Installation and Operation Manual.

Enphase recommends that an installer or site assessor verify that the site can easily accommodate consumption CTs before approving consumption monitoring as part of the project. The Envoy-S installs in most single-phase photovoltaic systems. For sites where consumption monitoring cannot be readily accommodated, this document provides a list of potential modifications to the service wiring to allow for consumption monitoring.

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