FREQUENCY-DIFFERENCE RELAY Russian patent published in 2004 - IPC

Abstract RU 2225653 C1

FIELD: electrical engineering. SUBSTANCE: frequency-difference relay used for adjusting signal being synchronized to input signal has input signal meter, multiplier, two comparators, two final elements, synchronized signal frequency and amplitude meters, algebraic adder, inverter, and division unit. EFFECT: enlarged functional capabilities and enhanced precision. 1 cl, 2 dwg

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RU 2 225 653 C1

Authors

Berezov V.V.

Dates

2004-03-10—Published

2002-10-08—Filed