GB278018A - Improvements in automatic reclosing gear for circuit breakers - Google Patents

Improvements in automatic reclosing gear for circuit breakers

Info

Publication number
GB278018A
GB278018A GB25485/27A GB2548527A GB278018A GB 278018 A GB278018 A GB 278018A GB 25485/27 A GB25485/27 A GB 25485/27A GB 2548527 A GB2548527 A GB 2548527A GB 278018 A GB278018 A GB 278018A
Authority
GB
United Kingdom
Prior art keywords
relay
thermal
time
lag
reclosing
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
GB25485/27A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB278018A publication Critical patent/GB278018A/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
    • H02H3/06—Details with automatic reconnection
    • H02H3/07—Details with automatic reconnection and with permanent disconnection after a predetermined number of reconnection cycles

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

278,018. Akt.-Ges. Brown, Boveri, et Cie. Sept. 27, 1926, [Convention date]. Void [Published under Scct. 91 of the Acts]. Addition to 186,036. Cut-out arrangements.-In the automaticallyreclosing circuit breaker system of the parent Specification in which the reclosure is held up after a given number of times by an electromagnetic relay with a mechanical line-lag, this relay is replaced by a thermal relay which has an inherent time-lag. As shown, when the circuitbreaker b trips it closes back contacts k which complete the energizing of the mechanical short time-limit relay f from the auxiliary transformer h and at the same time supply current from the same source to the thermal element p of the thermal long time limit relay. The closure of the relay f completes the circuit from the sourceh of the reclosing magnet m which recloses thecircuit-breaker after the short interval imposed by the relay f. This reclosing action continues. Owing to the thermal inertia of the heated element, after being heated up cumulatively a given number of times corresponding to the allowed number of reclosures, the thermal relay p opens and is retained in the open position by the catches o. The thermal relay remains open until reclosed by hand. The time-setting of the thermal relay may be adjusted by means of the resistance r.
GB25485/27A 1926-09-27 1927-09-27 Improvements in automatic reclosing gear for circuit breakers Expired GB278018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE278018X 1926-09-27

Publications (1)

Publication Number Publication Date
GB278018A true GB278018A (en) 1927-10-27

Family

ID=6028451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25485/27A Expired GB278018A (en) 1926-09-27 1927-09-27 Improvements in automatic reclosing gear for circuit breakers

Country Status (1)

Country Link
GB (1) GB278018A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463469A (en) * 1945-10-04 1949-03-01 Waldes Kohinoor Inc Time delay switching means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463469A (en) * 1945-10-04 1949-03-01 Waldes Kohinoor Inc Time delay switching means

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