UПЧФ-1 Phase Sequence Indicator for Ensuring Correct Phase Order

The UPCHF-1 devices are designed to determine the forward and reverse sequence of phase alternation in three-phase AC electrical network with grounded neutral with nominal voltage 380/200 V, frequency 50 Hz. The devices can be used in the installation of three-phase phase-dependent electrical consumers, electric motors, pumps, machine tools, three-phase protective disconnection devices and other loads, as well as during adjustment and repair work.