SU898546A1 - Device for protecting steel-armoured metal-sheathed cable from earthing - Google Patents
Device for protecting steel-armoured metal-sheathed cable from earthing Download PDFInfo
- Publication number
- SU898546A1 SU898546A1 SU792730534A SU2730534A SU898546A1 SU 898546 A1 SU898546 A1 SU 898546A1 SU 792730534 A SU792730534 A SU 792730534A SU 2730534 A SU2730534 A SU 2730534A SU 898546 A1 SU898546 A1 SU 898546A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cable
- earthing
- circuit
- armor
- sheathed cable
- Prior art date
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- Emergency Protection Circuit Devices (AREA)
Description
(5А) УСТРОЙСТВО дл ЗАЩИТЫ КАБЕЛЯ СО СТАЛЬНОЙ(5A) DEVICE FOR PROTECTION OF THE CABLE WITH STEEL
БРОНЕЙ И МЕТАЛЛИЧЕСКОЙ ОБОЛОЧКОЙ ОТ ЗАМЫКАНИЯARMS AND METAL SHUTTINGS
II
Изобретение относитс к электротехнике и может быть использовано дл защиты кабельной линии электропередачиоThe invention relates to electrical engineering and can be used to protect a cable power line.
Известны устойства дл защиты кабел от замыкани на землю, содержащие включенный в цепь кабел трансформатор тока нулевой последовательности , к выходу которого присоединен вход реагирующего органа, выход последнего соединен с цеп ми отключени выключател защищаемого кабел р ,There are known devices for protecting a cable against earth fault, containing a zero-sequence current transformer connected to the cable circuit, to the output of which the input of the reacting element is connected, the output of the latter is connected to the tripping circuit of the switch of the protected cable p,
Недостатком данного устойства в- л етс невысока чувствительность, определ ема необходимостью отстройки от бросков тока кабел и небаланса трансформатора.The disadvantage of this device is its low sensitivity, which is determined by the need to detun the cable from inrush current and the unbalance of the transformer.
Наиболее близким по технической сущности к предлагаемому вл етс устройство дл защиты электрического аппарата от замыкани на корпус, содержащее выключатель в цепи защищаемого аппарата и реагирующий орган, вход которого включен между корпусомThe closest in technical essence to the present invention is a device for protecting an electrical apparatus from closing to the housing, comprising a switch in the circuit of the protected apparatus and a reacting organ, the input of which is connected between the housing
НА ЗЕМЛЮTO THE GROUND
аппарата и контуром заземлени , выход реагирующего органа присоединен к цеп м отключател 2.the apparatus and the ground loop, the output of the reacting organ is connected to the circuit of the switch 2.
Недостатком известного устройства вл етс также невысока чувствительность , не позвол юща осуществл ть резервирование защит от замыкани t на землю в цеп х приемников.A disadvantage of the known device is also the low sensitivity, which does not allow for the implementation of redundancy of t-ground protection in the receiver circuits.
Цель изобретени - повышение чувствительности .The purpose of the invention is to increase the sensitivity.
Указанна цель достигаетс тем, что в устройстве дл защиты кабел со стальной броней и металлической оболочкой, содержащем проводник, замыкающий оболочку и броню в конце кабел с контуром заземлени , выключатель в цепи защищаемого кабел , реагирующий орган, первый полюс входа которого присоединен к броне и контуру заземлени , а выход при соединен к цеп м отключени выключател , вто-рой полюс входа реагирующего органа присоединен к металлической оболочке и нулевой жиле в начале кабел .This goal is achieved by the fact that in a device for protecting a cable with steel armor and a metal sheath containing a conductor closing the sheath and armor at the end of the cable with a ground loop, a switch in the circuit of the protected cable, a reacting organ, the first pole of which is connected to the armor and the circuit. grounding, and the output when connected to the circuit breaker circuit breaker, the second pole of the input of the reactive body is attached to the metal sheath and zero conductor at the beginning of the cable.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792730534A SU898546A1 (en) | 1979-02-28 | 1979-02-28 | Device for protecting steel-armoured metal-sheathed cable from earthing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792730534A SU898546A1 (en) | 1979-02-28 | 1979-02-28 | Device for protecting steel-armoured metal-sheathed cable from earthing |
Publications (1)
Publication Number | Publication Date |
---|---|
SU898546A1 true SU898546A1 (en) | 1982-01-15 |
Family
ID=20812620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792730534A SU898546A1 (en) | 1979-02-28 | 1979-02-28 | Device for protecting steel-armoured metal-sheathed cable from earthing |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU898546A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG90267A1 (en) * | 2000-11-10 | 2002-07-23 | Sumitomo Electric Industries | Power cable line |
-
1979
- 1979-02-28 SU SU792730534A patent/SU898546A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG90267A1 (en) * | 2000-11-10 | 2002-07-23 | Sumitomo Electric Industries | Power cable line |
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