NSX Micrologic VIGI 4 when single-phase configuration.

Below is the connection diagram from network to the load when 3P and 4P vigi for correct operation of the VIGI.

VIGI module is self-powered internally by distribution system voltage. It continues to function even when supplied by only two phases. The internal power supply of the VIGI electronic printing wiring board is realized by the voltage applied on the poles 1-2-3 through internal resistors. The neutral pole do not participate to the power supply. But the neutral pole participates the earth leakage detection.

Moreover, NSXm Micrologic 4.1 MCCB is suitable for for single phase +N running through it. 3P ELCB ((Earth leakage circuit breaker) can be used on a single phase application using P1-P2 or P1-P3 or P2-P3 for connection

Released for: Schneider Electric Thailand