GB263598A - Improvements in electric circuit protecting devices - Google Patents

Improvements in electric circuit protecting devices

Info

Publication number
GB263598A
GB263598A GB2989525A GB2989525A GB263598A GB 263598 A GB263598 A GB 263598A GB 2989525 A GB2989525 A GB 2989525A GB 2989525 A GB2989525 A GB 2989525A GB 263598 A GB263598 A GB 263598A
Authority
GB
United Kingdom
Prior art keywords
breaker
feeder
resistance
opens
coils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2989525A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB2989525A priority Critical patent/GB263598A/en
Publication of GB263598A publication Critical patent/GB263598A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection

Landscapes

  • Breakers (AREA)

Abstract

263,598. English Electric Co., Ltd., and Bolton, R. A. R. Nov. 26, 1925. Cut-out arrangements.-In order to ensure the opening of a feeder circuit-breaker 9 when a highspeed breaker 4 opens, on a fault occurring, and inserts a current-limiting resistance 5 in the circuit; an auxiliary coil 13 is provided to assist the overload coil 11 to open the feeder breaker, the coils 13 being connected in parallel across the whole or a part of the resistance 5. The mains are connected to a source and have a normal speed breaker 3 in the + lead, which is connected to the bus-bar 6, the high-speed breaker being in the - lead. On the occurrence of a fault in, for example, feeder T, the breaker 4 opens and inserts the resistance 5, so cutting down the current, which may not be strong enough to bring out the breaker 9. Owing to the P.D. across the resistance 5 the auxiliary coils are energized to assist the ordinary coils, but only in the feeder (in this case, 7) carrying the abnormal current will the combined effect be strong enough to open the breaker 9. The coil 13 is arranged to be disconnected when the feeder breaker opens.
GB2989525A 1925-11-26 1925-11-26 Improvements in electric circuit protecting devices Expired GB263598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2989525A GB263598A (en) 1925-11-26 1925-11-26 Improvements in electric circuit protecting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2989525A GB263598A (en) 1925-11-26 1925-11-26 Improvements in electric circuit protecting devices

Publications (1)

Publication Number Publication Date
GB263598A true GB263598A (en) 1927-01-06

Family

ID=10298915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2989525A Expired GB263598A (en) 1925-11-26 1925-11-26 Improvements in electric circuit protecting devices

Country Status (1)

Country Link
GB (1) GB263598A (en)

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