FIELD: measurement of electrical quantities.
SUBSTANCE: invention relates to the indication of high voltage in three-phase networks 6-35 kV. The high voltage indicator comprises capacitive high voltage sensors and an indication unit with testing to check the integrity of the circuit, a rechargeable test source, transformers, varistors, switching relays, rectifiers, high voltage LED indicators, a sound emitter warning about opening the doors of protective devices of electrical equipment under voltage , test button, two-color TEST LED indicator, control unit, generator, tuneable narrow-band filters, high-frequency rectifiers, smoothing filters, comparators, logic element and triggers.
EFFECT: increased glow of the LEDs of the display unit, galvanic isolation, audible warning of the presence of high voltage and multiple testing, which increases the safety of use and reliability of the device.
1 cl, 1 dwg
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