Crestron has been flaunting the GLS-EM-MCU, an Ethernet-based power metering control unit, designed to log overall electricity usage in real time.

It measures and tracks actual energy consumption by attaching to the incoming electrical service and branch circuits. The GLS-EM-MCU also works in unison with the GLS-EM-CTI and GLS-EM-CT to provide more detailed data by tracking individual branch circuits in a home or office. This data is then displayed on a touch panel, mobile device or computer for viewing by users.

In addition the GLS-EM-MCU system interfaces with Fusion EM™ Energy Management Software to provide reports with greater detail to show total building consumption.

The main control unit (MCU) monitors both voltage and current to provide complete statistics of a building’s electricity consumption. To achieve this, the MCU connects to line voltage of each phase (up to three) and neutral. Current transformers (GLS-EM-CTs) clamp around each of the incoming feed wires. These CTs then wire into the MCU’s inputs. With the voltage and current data, the MCU calculates power usage.

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