SU121839A1 - Device for the protection of electrical installations - Google Patents
Device for the protection of electrical installationsInfo
- Publication number
- SU121839A1 SU121839A1 SU613280A SU613280A SU121839A1 SU 121839 A1 SU121839 A1 SU 121839A1 SU 613280 A SU613280 A SU 613280A SU 613280 A SU613280 A SU 613280A SU 121839 A1 SU121839 A1 SU 121839A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- protection
- electrical installations
- transformers
- current
- sections
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
Насто щее изобретение относитс к устройствам дл защиты электроустановок на переменном оперативном токе. Известные устройства подобного рода содержат токовые реле, включенные на фазные токи, реле времени и два включенных на разность токов промежуточных трансформатора, питающих реле времени и отключающую катущку.The present invention relates to devices for the protection of electrical installations on an alternating operational current. The known devices of this kind contain current relays connected to phase currents, time relays and two intermediate transformers connected to the difference of currents, supplying the time relays and the disconnecting coil.
Предлагаемое устройство более совершенно по сравнению с известными устройствами подобного рода, так как оно позвол ет осуществл ть токовую отсечку.The proposed device is more perfect than the known devices of this kind, since it allows current cut-off to be realized.
Это достигаетс тем, что последовательно с отключающей катущкой включено сопротивление, щунтируемое контактом реле времени, а дл компенсации индуктивного сопротивлени в одну из вторичных обмоток указанного трансформатора включен конденсатор.This is achieved by the fact that a resistance is connected in series with the tripping coil by a time relay contact, and a capacitor is connected to one of the secondary windings of the indicated transformer to compensate for the inductive resistance.
На чертеже изображена схема предлагаемого устройства.The drawing shows a diagram of the proposed device.
Устройство содержит два максимальных токовых реле 1 и 2, включенных на фазные токи, реле времени 3 и два промежуточные насыщающиес трансформаторы 4 и 5. Первичные обмотки трансформаторов 4 и 5 включены через трансформаторы тока 6 на разность токов двух фаз, а вторичные, состо щие из двух секций, питают реле времени 3 и отключающую катущку 7.The device contains two maximum current relays 1 and 2, connected to phase currents, time relay 3 and two intermediate saturable transformers 4 and 5. The primary windings of transformers 4 and 5 are connected through current transformers 6 to the difference of currents of the two phases, and the secondary ones consisting of two sections, feed the time relay 3 and the disconnecting roller 7.
, Дл работы защиты с токовой отсечкой в цепь отключающей катущки включено сопротивление 8, щунтируемое контактом реле времени . С целью снижени мощности, потребл емой промежуточными трансформаторами , в одну из секций их вторичной обмотки включен конденсатор 9.For the protection operation with a current cut-off, a resistance 8 connected by a time relay contact is switched on in the tripping coil circuit. In order to reduce the power consumed by the intermediate transformers, a capacitor 9 is connected to one of the sections of their secondary winding.
Отключающа катущка 7 выполнена из двух одинаковых секций, соединенных встречно. Потому в нормальном режиме, когда средние точки катущки 7 и вторичной обмотки промежуточного трансформатора 4 не соединены, магнитные потоки секций вычитаютс и катущки почти не создают т гового усили . При замыкании средних точек каThe disconnecting roller 7 is made of two identical sections connected in opposite. Therefore, in the normal mode, when the midpoints of the coil 7 and the secondary windings of the intermediate transformer 4 are not connected, the magnetic fluxes of the sections are subtracted and the coils almost do not generate tractive effort. When closing the midpoints
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU613280A SU121839A1 (en) | 1958-12-04 | 1958-12-04 | Device for the protection of electrical installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU613280A SU121839A1 (en) | 1958-12-04 | 1958-12-04 | Device for the protection of electrical installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU121839A1 true SU121839A1 (en) | 1959-11-30 |
Family
ID=48393597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU613280A SU121839A1 (en) | 1958-12-04 | 1958-12-04 | Device for the protection of electrical installations |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU121839A1 (en) |
-
1958
- 1958-12-04 SU SU613280A patent/SU121839A1/en active
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