RESISTANCE RELAY Russian patent published in 2004 - IPC

FIELD: electrical engineering. SUBSTANCE: proposed relay that can be used as remote quadruple-characteristic protective gear depending for its operation on phase comparison of four quantities using single comparison circuit has final element, compared voltages converter built around first, second, third, and fourth comparators, first, second, and third AND gates, first, second, and third OR gates, pulse counter, memory register, monostable multivibrator, clock generator, first short-pulse leading edge shaper, second short-pulse training edge shaper, delay circuit, and compared voltages shaping unit. EFFECT: enhanced precision. 1 cl, 1 dwg