Devices for relay protection and automation and energy service companies

  • Three-phase voltamperemeter and phase meter VFM-3

    Number in State Register: 58639-14

    Voltamperemeter and phase meter VFM-3 is designed for simultaneous measurement of effective value of three phase and three phase-to-phase voltages, value of the strength of three alternating currents with simultaneous calculation of active, reactive, full power in the circuit, measurement of frequency and phase-shift angle between phase and phase-to-phase voltages, between currents and voltages, as well as for displaying a vector diagram of the voltages and currents in three-phase systems.

    The device has a built-in function of an electrical energy meter (mode 2).

    The device can be used for complex tests of generators protection, transformers, electric lines, in CT and VT circuits, in setting up phase-sensitive relay protection schemes, for checking whether  electrical energy meters are connected correctly.