Energy per Phase

Presentation

The Energy per Phase Digital Module enables the analysis of energy consumption per phase. It is especially recommended for low voltage installations having a large amount of unbalanced loads. At the point of measurement, it allows the calculation of and displays the received and delivered energy on each phase of the network. It calculates and displays active, reactive and apparent energy per phase.

The energy per phase is calculated using the method described for calculating energy.

The Energy per Phase Digital Module can be installed:

oOn a 4-pole MasterPact MTZ circuit breaker.

oOn a 3-pole MasterPact MTZ circuit breaker with neutral connected to the VN terminal and with ENVT wired and configured.

Prerequisites

Energy per phase is available when the Energy per Phase Digital Module is purchased and installed on a MicroLogic X control unit.

The Energy per Phase Digital Module is compatible with:

oMicroLogic 2.0 X, 5.0 X, 6.0 X, and 7.0 X control units for IEC standard

oMicroLogic 3.0 X, 5.0 X, and 6.0 X control units for UL standard

oMicroLogic X control units with firmware version greater than or equal to 001.000.000

Data from the Digital Module is available remotely through IFE/EIFE or IFM communication interfaces, if the IFE/EIFE or IFM firmware version is compatible with the Digital Module. For more information, refer to firmware compatibility of the communication interfaces.

Energy Meter Characteristics

Measurement	Unit	Range	Accuracy	Accuracy range
Total active energy per phase Epdelivered(1,2,3)	kWh	-10,000,000 to 10,000,000 kWh	+/-1%	See NOTE below
Total active energy per phase Epreceived(1,2,3)	kWh	-10,000,000 to 10,000,000 kWh	+/-1%	See NOTE below
Total reactive energy per phase Eqdelivered(1,2,3)	kVARh	-10,000,000 to 10,000,000 kVARh	+/-1%	See NOTE below
Total reactive energy per phase Eqreceived(1,2,3)	kVARh	-10,000,000 to 10,000,000 kVARh	+/-1%	See NOTE below
Total apparent energy per phase Es(1,2,3)	kVARh	0 to 10,000,000 kVARh	+/-1%	See NOTE below

NOTE: The accuracy for the energy measurement range according to IEC 61557-12 is defined by current range, voltage, and power factor values.

Availability of Resettable Energy Meters

Measurement	MicroLogic X HMI	EcoStruxure Power Device app	EcoStruxure Power Commission software	FDM128	Communication	IFE/EIFE webpages
Total active energy per phase: Epdelivered(1,2,3), and Epreceived(1,2,3)	–	✔	✔	✔	✔	–
Total reactive energy per phase: Eqdelivered(1,2,3), and Eqreceived(1,2,3)	–	✔	✔	✔	✔	–
Total apparent energy per phase: Es(1,2,3)	–	✔	✔	✔	✔	–

Availability of Non-Resettable Energy Meters

Measurement	MicroLogic X HMI	EcoStruxure Power Device app	EcoStruxure Power Commission software	FDM128	Communication TCP/IP	IFE/EIFE webpages
Total active energy value Ep	–	–	✔	–	✔	–
Total active energy values: Epdelivered, and Epreceived	–	–	✔	✔	✔	–
Total reactive energy value Eq	–	–	✔	–	✔	–
Total reactive energy values: Eqdelivered, and Eqreceived	–	–	✔	–	✔	–
Total apparent energy value Es	–	–	✔	–	✔	–

Resetting Energy Per Phase

Energy per phase resettable meters can be reset as other energy measurements.