SU886263A1 - Device for protecting two-cable communication line - Google Patents
Device for protecting two-cable communication line Download PDFInfo
- Publication number
- SU886263A1 SU886263A1 SU802897530A SU2897530A SU886263A1 SU 886263 A1 SU886263 A1 SU 886263A1 SU 802897530 A SU802897530 A SU 802897530A SU 2897530 A SU2897530 A SU 2897530A SU 886263 A1 SU886263 A1 SU 886263A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cable
- transformer
- reduction
- protection
- winding
- Prior art date
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- Dc Digital Transmission (AREA)
Description
(54) УСТРрЙСТБО ЗАЩИТЫ ДВУХКАБЕПЬНОЙ ЛИНИИ СВЯЗИ(54) DEVELOPMENT OF PROTECTION OF TWO-TERM LINE OF COMMUNICATION
Изобретение относитс к эпектротех- нике Н может использоватьс при прокладке двухкабельных магистралей св зи вблизи линий высокого напр жени The invention relates to a process engineer H can be used when laying two-cable communication lines near high voltage lines.
Известно устройство защиты двухкабельной пинии св зи, содержащее редукционный трансформатор, перва обмотка которого соединена последовательно с изопированными друг от друга оболочками первого кабел , а втора обмотка редукционного трансформатора соединена последовательно с жилами первого кабел l .A device for protection of a two-cable line is known, which contains a reducing transformer, the first winding of which is connected in series with the sheaths of the first cable that are isolated from each other, and the second winding of the reducing transformer is connected in series with the conductors of the first cable l.
Однако известное устройство не обеспечивает достаточной защищенности линии св зи от вли ни внешних источников .However, the known device does not provide sufficient security of the communication line from the influence of external sources.
Цель изобретени - повышение fsaпшщенности от внешних источников.The purpose of the invention is to increase the fs of the external sources.
Поставленна цель достигаетс тем, что редукционный трансформатор выполнен на Ш-образном сердечнике, причем изолированные друг от друга оболочки второго кабел соединены с первой об-The goal is achieved by the fact that the reduction transformer is made on the W-shaped core, and the sheaths of the second cable insulated from each other are connected to the first
моткой редукционного трансформатора, расположенной на центральном магнитопроводе редукционного трансформатора а дополнительна обмотка редукционного трансформатора соединена последовательно с жилами второго кабел . При этом редукционные трансформа- торы Ьключены в линию св зи с интервалом , определ емым из соотношени a coil of a reducing transformer located on the central magnetic circuit of the reducing transformer and the additional winding of the reducing transformer are connected in series with the cores of the second cable. At the same time, the reduction transformers b are connected to the communication line with an interval determined from the ratio
10ten
eiei
РТRT
О .ABOUT .
.и.and
0505
шгshg
1515
где t - длина защищаемиги y aoiAawhere t is the length of the protected y aoiAa
кабел ;cable;
S - требуемый коэффициент защитного действи ;S is the required protective effect factor;
HQJ . - активное сопротивление цепи Hqj - active resistance of the circuit
20 оболочка - земл на длине Е ; ЬОБ индуктивность оболочки кабел 20 shell - earth on the length E; BOB cable inductance
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802897530A SU886263A1 (en) | 1980-03-19 | 1980-03-19 | Device for protecting two-cable communication line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802897530A SU886263A1 (en) | 1980-03-19 | 1980-03-19 | Device for protecting two-cable communication line |
Publications (1)
Publication Number | Publication Date |
---|---|
SU886263A1 true SU886263A1 (en) | 1981-11-30 |
Family
ID=20884206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802897530A SU886263A1 (en) | 1980-03-19 | 1980-03-19 | Device for protecting two-cable communication line |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU886263A1 (en) |
-
1980
- 1980-03-19 SU SU802897530A patent/SU886263A1/en active
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