Phase Selector УВФ-1

The phase selection device (hereinafter УВФ-1) is designed to protect a single-phase consumer of electricity from overvoltages in an alternating current network of voltage 220V, 50 Hz, and also to select the optimal phase in a three-phase network 380V, 50 Hz. The optimal phase in the three-phase network 380V, 50 Hz is selected automatically so that the voltage of the selected phase with respect to the neutral wire is within 220V + 10%.

Fig. 1 - Connection diagram УВФ-1

Specifications

The lower level of consumer voltage at which the selected phase is switched off and switched, V
185
The upper level of the consumer's supply voltage, at which the selected phase is switched off and switched, V
245
Duration of phase shutdown with voltage more than 245 V, ms, no more
20
Duration of full consumer switching between phases, ms, no more
100
Permissible current strength consumed from УВФ-1, A, not more than
25
Weight УВФ-1, kg, no more
2,6
Overall dimensions, mm
250 x 160 x 110
Terms of Use:
– ambient temperature, ° С
от minus 10 до plus 40
– relative humidity at temperature plus 35 ° С,%, no more
80