SU573836A1 - Device for protection of three-phase circuit from phase break - Google Patents
Device for protection of three-phase circuit from phase breakInfo
- 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
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)
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)
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 |
-
1975
- 1975-10-03 SU SU7502177583A patent/SU573836A1/en active
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU573836A1 (en) | Device for protection of three-phase circuit from phase break | |
KR830001747A (en) | Protection relay device | |
SE8500641L (en) | SKYDDSRELE | |
KR870001728A (en) | Vertical Detail Information Restoration Circuit | |
US2018241A (en) | Electric protective system | |
US1631667A (en) | Electric-furnace system | |
GB520448A (en) | Multiplex high frequency signal transmission systems | |
ES495196A0 (en) | IMPROVEMENTS IN A CONNECTION PROVISION FOR MULTI-LIKE DEFECT CURRENT PROTECTION SWITCHES | |
SU898548A1 (en) | Device for protecting generator and transformer united in one system from earthing | |
SU902134A1 (en) | Device for protecting dc and ac networks from fault current to earth | |
SU995188A1 (en) | Device for differential-phase protection of electric motor from interphase short-circuitings | |
SU890510A1 (en) | Device for protecting ac electric equipment from current leakage | |
SU851595A1 (en) | Device for indicating and interlocking current protection action | |
SU851603A2 (en) | Device for differential protecting of collecting buses | |
SU89943A1 (en) | Single-system filter current balance protection of two parallel lines | |
SU450366A1 (en) | Majority element | |
SU960993A1 (en) | Three-phase current relay | |
SU1589348A1 (en) | Damage selector for differential protection of double system of busbars | |
SU594555A1 (en) | Phase-comparing device for differential-phase high-frequency protection of power transmission lines | |
SU799063A1 (en) | Device for current protection of branched load | |
SU752549A1 (en) | Device for protecting three-phase bus-bars from interphase arc shortings | |
SU744834A1 (en) | Amplitude-phase relay | |
SU725138A2 (en) | Arrangement for differential protection of collecting bars | |
GB754269A (en) | Improvements in or relating to system for paralleling two alternating current sources | |
SU796975A1 (en) | Device for serviceability testing of protection circuits of three-phase type |