16 A direct connection. With priority phase.
The automatic phase switch is used to maintain continuity of power supply to a single-phase consumer in case of a loss of one of the supply phases or a drop in parameters below normal.
Operation
Three-phase voltage (3 × 230 V+N) is supplied to the input of the switch. To the output of the switch is directed a single-phase voltage (230 V AC), i.e. the phase voltage of one of the phases. The electronic circuit of the switch controls the voltage values of the supplied phases so that the output voltage is not less than 195 V. The phase with the correct parameters is directed to the switch output. The illumination of the corresponding green LED, indicates that the phase is connected to the switch output. Phase L1 is the priority phase, i.e. if its parameters are correct, this phase will always be switched on to the output. If the voltage of the L1 phase drops below 190 V or disappears (the green L1 LED goes out), the electronics will switch the L2 phase to the output (if its parameters are correct). In case of simultaneous absence of correct voltages in phases L1 and L2 (green LEDs L3 and L2 go out), phase L3 will be switched to the output. If the correct supply voltage in phase L1 returns (above 195 V), the system will switch on this phase to the output.

Technical data