SU573836A1 - Device for protection of three-phase circuit from phase break - Google Patents

Device for protection of three-phase circuit from phase break

Info

Publication number
SU573836A1
SU573836A1 SU7502177583A SU2177583A SU573836A1 SU 573836 A1 SU573836 A1 SU 573836A1 SU 7502177583 A SU7502177583 A SU 7502177583A SU 2177583 A SU2177583 A SU 2177583A SU 573836 A1 SU573836 A1 SU 573836A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phase
protection
break
network
circuit
Prior art date
Application number
SU7502177583A
Other languages
Russian (ru)
Inventor
Владимир Александрович Демаков
Original Assignee
Предприятие П/Я В-2141
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-2141 filed Critical Предприятие П/Я В-2141
Priority to SU7502177583A priority Critical patent/SU573836A1/en
Application granted granted Critical
Publication of SU573836A1 publication Critical patent/SU573836A1/en

Links

Description

этому на входе порогового элемента напр жени  нет.This input has no threshold voltage element.

При обрыве фазы в системе без нулевого провода на выходе выпр мител ; возникает напр жение с частотой пульсации 2Гсети. При обрыве фазы в системе с нулевым проводом на выходе выпр мител  возникает напр жение с частотой пульсации f сети g обоих случа х на выходе фильтра 3 по вл ёт с  напр жение и пороговый элемент 4 посылает сигнал на исполнительный элемент 5.When a phase break in the system without a neutral wire at the output of the rectifier voltage arises with a 2G network ripple frequency. When a phase is interrupted in a system with a zero wire, a voltage arises at the output of the rectifier with a ripple frequency f of the network g in both cases at the output of the filter 3 appears with voltage and the threshold element 4 sends a signal to the actuating element 5.

Предлагаемое устройство позвол ет надежно satmiTHTb трехфазную цепь от обрыва фазы.The proposed device reliably satmiTHTb three-phase circuit from phase loss.

Claims (1)

Формула изобретени Invention Formula Устройство дл  защиты трехфазной сети от обрыва фазы, содержащее датII tl IIDevice for protection of a three-phase network against phase failure, containing date II tl II чики токи в каждой фазе, входы которых подключены к источнику оперативного напр жени , а выходы через трехфазный однополупернодный выпр мительный мост и пороговый элемент присоединены к исполнительному элементу, отличающеес  тем, что, с целью повышени  надежности, введен фильтр нижних частот с полосой пропускани  от двойной до тройной часто-ты сети , пклгоченный между fFoporbsa элементом и трехфазным однополупериодным выпр мительным ,The currents in each phase, the inputs of which are connected to a source of operating voltage, and the outputs through a three-phase, one-half-square rectifier bridge and a threshold element are connected to an actuator, characterized in that, in order to increase reliability, a low-pass filter is introduced with a passband from double up to triple frequency of the network, between the fFoporbsa element and the three-phase half-wave rectifier, Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1,Авторское свидетельство СССР № 307458, кл.Н 02 Н 3/34, 1972.1, USSR Author's Certificate No. 307458, cl. H 02 H 3/34, 1972. 2,Автомат отключени  фаз (АОФ-3). Оборудование летательных аппаратов, двигателей и средств их обслуживани . НЙИСУ техническа  инфог лационна  карта и 13-1132,2, Automatic Phase Disconnect (AOF-3). Equipment of aircraft, engines and their maintenance. NYISU technical info card and 13-1132,
SU7502177583A 1975-10-03 1975-10-03 Device for protection of three-phase circuit from phase break SU573836A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7502177583A SU573836A1 (en) 1975-10-03 1975-10-03 Device for protection of three-phase circuit from phase break

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7502177583A SU573836A1 (en) 1975-10-03 1975-10-03 Device for protection of three-phase circuit from phase break

Publications (1)

Publication Number Publication Date
SU573836A1 true SU573836A1 (en) 1977-09-25

Family

ID=20633410

Family Applications (1)

Application Number Title Priority Date Filing Date
SU7502177583A SU573836A1 (en) 1975-10-03 1975-10-03 Device for protection of three-phase circuit from phase break

Country Status (1)

Country Link
SU (1) SU573836A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2520162C2 (en) * 2008-12-19 2014-06-20 Бсх Бош Унд Сименс Хаусгерете Гмбх Monitoring method for controller of three-phase electric motor and/or electric motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2520162C2 (en) * 2008-12-19 2014-06-20 Бсх Бош Унд Сименс Хаусгерете Гмбх Monitoring method for controller of three-phase electric motor and/or electric motor

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