SU792443A1 - Device for earthing leacage current protection in ac mains - Google Patents
Device for earthing leacage current protection in ac mains Download PDFInfo
- Publication number
- SU792443A1 SU792443A1 SU782694765A SU2694765A SU792443A1 SU 792443 A1 SU792443 A1 SU 792443A1 SU 782694765 A SU782694765 A SU 782694765A SU 2694765 A SU2694765 A SU 2694765A SU 792443 A1 SU792443 A1 SU 792443A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thyristor
- output
- network
- leacage
- earthing
- Prior art date
Links
Description
вичной обмотке указанного трансформатора , а выход чувствительного элемента соединен с блоком управлени тиристорного npeo6pa3OBaTejjH часто .ты.to the private winding of the specified transformer, and the output of the sensitive element is often connected to the thyristor control unit npeo6pa3OBaTejjH.
На чертеже изображена блок-схема устройства дл защиты совместно с преобразователем и т говой сетью.The drawing shows a block diagram of a device for protection together with a converter and a traction network.
Тиристорный преобразователь состоит из выпр мител 1, инвертора 2 и систекы управлени 3. Нагрузка преобразовател - т гова сеть 4 подключена через . выходной трансформатор 5. Источник б оперативного тока устройства дл защиты от утачек одним выводом соединен с землей, а другим через чувствительный орган 7 и резонансный фильтр 8 подключен к защищаемой сети 4, &лход чувствительного органа 7 соединен с тиристором 9, включенным последовательно с резистором 10, а также с системой управлени 3 преобразовател .The thyristor converter consists of rectifier 1, inverter 2 and control system 3. The load of converter 4 of network 4 is connected via. output transformer 5. A source b of the operating current of an anti-utach protection device is connected to ground with one output and to another through a sensing element 7 and a resonant filter 8 connected to the protected network 4, & sensing element 7 connected to a thyristor 9 connected in series with a resistor 10, as well as with the control system 3 of the converter.
Устройство дл защиты от утечек тока на землю работает следующим образом .Device for protection against leakage of current to earth operates as follows.
При снижении сопротивлени изол ции т говой сети 4 повышенной частоты оперативный ток, протекающий от источника, б через чувствительный орган 7 и фильтр присоединени 8,увеличиваетс . Чувствительный орган 7 подает сигнал на срабатывание тиристора 9, который включает дополнительный резистор 10. Одновременно на систему управлени 3 приходит сигнал на сн тие импульсов управлени с тиристоров выпр мител 1 и инвертора 2, Тем самым прекращаетс поступление в преобразователь энергии отBy reducing the insulation resistance of the traction network 4 of increased frequency, the operating current flowing from the source, b through the sensing element 7 and the attachment filter 8, increases. The sensing organ 7 sends a signal to the thyristor 9, which includes an additional resistor 10. At the same time, the control system 3 receives a signal to remove the control pulses from the thyristors of the rectifier 1 and the inverter 2, thereby stopping the flow of energy into the converter
шахтной сети, а запасенна энерги рассеиваетс на резисторе 10, .mine network, and the stored energy is dissipated at the resistor 10,.
Применение предлагаемого устройства позвол ет снизить врем срабатывани защиты от утечек тока на землю в т говой сети повьшенной частоты с 36-40 мс до 4 мс.The use of the proposed device makes it possible to reduce the response time of the protection against leakage of current to earth in a high frequency traction network from 36-40 ms to 4 ms.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782694765A SU792443A1 (en) | 1978-12-12 | 1978-12-12 | Device for earthing leacage current protection in ac mains |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782694765A SU792443A1 (en) | 1978-12-12 | 1978-12-12 | Device for earthing leacage current protection in ac mains |
Publications (1)
Publication Number | Publication Date |
---|---|
SU792443A1 true SU792443A1 (en) | 1980-12-30 |
Family
ID=20797798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782694765A SU792443A1 (en) | 1978-12-12 | 1978-12-12 | Device for earthing leacage current protection in ac mains |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU792443A1 (en) |
-
1978
- 1978-12-12 SU SU782694765A patent/SU792443A1/en active
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