FREQUENCY RELAY Russian patent published in 2004 - IPC

Abstract RU 2239905 C1

FIELD: electrical engineering; electronic frequency relays.

SUBSTANCE: proposed relay designed to perform both functions of frequency rising and reducing has frequency-dependent component, four threshold units, two OR gates, pulse counter, two final elements, clock generator, monostable multivibrator whose trigger input functions as frequency relay input, averaging filter, two short-pulse shapers, and RS flip-flop.

EFFECT: enlarged functional capabilities.

1 cl, 5 dwg

Similar patents RU2239905C1

Title	Year	Author	Number
PHASE-FREQUENCY RELAY	2003	Shurdov M.A.	RU2239904C1
PHASE-DIFFERENCE RELAY	2003	Shurdov M.A.	RU2241273C1
FREQUENCY-PHASE RELAY	2016	Almazov Vladimir Aleksandrovich Anisov Yan Ivanovich Gusev Aleksandr Nikolaevich Kirillov Nikolaj Petrovich Polyanskij Vladimir Ivanovich	RU2641096C2
PHASE DIFFERENCE RELAY	2016	Anisov Yan Ivanovich Kvasov Evgenij Gennadevich Kirillov Nikolaj Petrovich Marakulin Yurij Vladimirovich Polyanskij Vladimir Ivanovich	RU2639891C2
PHASE DIFFERENCE RELAY	2016	Anisov Yan Ivanovich Kvasov Evgenij Gennadevich Kirillov Nikolaj Petrovich Marakulin Yurij Vladimirovich Polyanskij Vladimir Ivanovich	RU2636750C1
PHASE-FREQUENCY RELAY	2002	Shaposhnikov A.N.	RU2213387C1
DIFFERENCE-FREQUENCY RELAY	2002	Berezov V.V.	RU2208866C1
PHASE DIFFERENCE RELAY	2011	Mosienko Andrej Viktorovich Borisov Ehduard Vasil'Evich Kazarin Vladimir Efimovich Bezborodov Aleksandr Sergeevich Tatsyshin Nikolaj Nikolaevich Kupach Oleg Sergeevich	RU2484547C1
PHASE-DIFFERENCE RELAY	2002	Shurdov M.A.	RU2213388C1
PHASE-DIFFERENCE RELAY	2003	Berezov V.V.	RU2237312C1

RU 2 239 905 C1

Authors

Shurdov M.A.

Dates

2004-11-10—Published

2003-05-15—Filed