SU886137A1 - Device for protecting network by current-limiting automatic switches - Google Patents
Device for protecting network by current-limiting automatic switches Download PDFInfo
- Publication number
- SU886137A1 SU886137A1 SU792817067A SU2817067A SU886137A1 SU 886137 A1 SU886137 A1 SU 886137A1 SU 792817067 A SU792817067 A SU 792817067A SU 2817067 A SU2817067 A SU 2817067A SU 886137 A1 SU886137 A1 SU 886137A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- current
- automatic switches
- protecting network
- limiting automatic
- protection
- Prior art date
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- Emergency Protection Circuit Devices (AREA)
Description
(5) УСТРОЙСТВО ДЛЯ ЗАЩИТЫ СЕТИ ТОКООГРАНИЧИВАЮЩИМИ АВТОМАТИЧЕСКИМИ ВЫКЛЮЧАТЕЛЯМИ(5) DEVICE FOR PROTECTION OF A NETWORK WITH TO-LIMITING AUTOMATIC SWITCHES
. V . : .,. V. :.,
Изобретение относитс к устройсТвам защиты сети низковольтными аппаратами защиты от токов короткого замыкани .This invention relates to network protection devices for low-voltage short-circuit protection devices.
Дл селективной защиты низковольтных распределительных сетей в основном примен ют автоматические выключатели с независимыми от тока выдержками времени, величиныкоторых ступенчато возрастают по направлению к источнику питани .For the selective protection of low-voltage distribution networks, circuit breakers with current-independent time delays, whose magnitudes increase stepwise towards the power source, are mainly used.
Известным недостатком данной защиты вл етс повышенна длительность отключени .тока короткого замыкани , в особенности, вблизи источника питани , где величина toKa и степень его отрицательного воздействи на сеть и электрооборудование максимальны.A known disadvantage of this protection is the increased duration of the short-circuit current shutdown, especially near the power supply, where the toKa value and the degree of its negative effect on the network and electrical equipment are maximum.
Частичное.устранение этого недо-, статка возможно путем применени селективно- токоограничивающих выключателей , у которых при повышенных величинах токов короткого замыкани Partial elimination of this underflow is possible through the use of selectively-current-limiting switches that have short circuit currents at elevated values
срабатывание происходит без принудительной выдержки времени.Triggering occurs without forced time delay.
Однако данна защита не обеспечивает , селективной защиты при предельных величинах токов короткого замыкани .However, this protection does not provide selective protection for the limiting values of short circuit currents.
Наиболее эффективным и универсальным вл етс применение различного рода дифференциальных защит 21.The most effective and versatile is the use of various kinds of differential protection 21.
Однако вследствие ifix сложности и, However, due to ifix complexity and
10 в особенности, необходимости прокладки дополнительных кабелей управлени между выключател ми применение этих защит в низковольтных сет х возможно только дл наиболее ответственных 10 in particular, the need to lay additional control cables between switches, the application of these protections in low-voltage networks is possible only for the most responsible
IS участков сети. .IS network plots. .
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792817067A SU886137A1 (en) | 1979-09-13 | 1979-09-13 | Device for protecting network by current-limiting automatic switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792817067A SU886137A1 (en) | 1979-09-13 | 1979-09-13 | Device for protecting network by current-limiting automatic switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU886137A1 true SU886137A1 (en) | 1981-11-30 |
Family
ID=20849512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792817067A SU886137A1 (en) | 1979-09-13 | 1979-09-13 | Device for protecting network by current-limiting automatic switches |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU886137A1 (en) |
-
1979
- 1979-09-13 SU SU792817067A patent/SU886137A1/en active
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