Automatic phase switch PF-431 with priority phase, I = 16A, 3 modules

Direct connection 16 A. With priority phase.
The automatic phase switch is used to maintain the continuity of power supply to a single-phase receiver in the event of loss of one of the supply phases or a drop in parameters below the standard.





Action
Three-phase voltage is supplied to the input of the switch (3 × 230 V+N). Single-phase voltage (230 V AC) is directed to the output of the switch, i.e. the phase voltage of one of the phases. 195 V. The phase with correct parameters is directed to the switch output. The lighting of the appropriate green LED indicates that the given phase is on to the switch output. The L1 phase is the priority phase, i.e. if its parameters are correct, this phase will always be connected to the output. In the event of a