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What is the function of External neutral voltage tap (ENVT) in Compact NSX?

Issue: ENVT in Compact NSX.
Environment: Compact NSX.
Resolution: This connection is required for accurate power measurements on 3-pole circuit breakers equipped with Micrologic 5 / 6 E trip units in installations with a distributed neutral. It can be used to measure phase-neutral voltages and calculate power using the 3-wattmeter method.
The phase to neutral voltage is always available for 4 poles circuit breakers, while for 3 poles circuit breakers, the connection of the Micrologic 5 / 6 E to the neutral using ENVT is a must. This is to guarantee the accuracy for the active power measurement.
Compact NSX 3-pole circuit breakers come with a wire installed on the device for the connection to the ENVT.
ENCT_WIRING

Released for: Schneider Electric United Arab Emirates
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Range:
Compact NSX <630
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