GB718985A - Improvements relating to gas blast circuit breakers - Google Patents

Improvements relating to gas blast circuit breakers

Info

Publication number
GB718985A
GB718985A GB654852A GB654852A GB718985A GB 718985 A GB718985 A GB 718985A GB 654852 A GB654852 A GB 654852A GB 654852 A GB654852 A GB 654852A GB 718985 A GB718985 A GB 718985A
Authority
GB
United Kingdom
Prior art keywords
relay
contacts
energized
circuit
blast
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
GB654852A
Inventor
Austin Frederick Brabant Young
Alfred Erich Zimmermann
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.)
A Reyrolle and Co Ltd
Original Assignee
A Reyrolle and 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 A Reyrolle and Co Ltd filed Critical A Reyrolle and Co Ltd
Priority to GB654852A priority Critical patent/GB718985A/en
Publication of GB718985A publication Critical patent/GB718985A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/593—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for ensuring operation of the switch at a predetermined point of the ac cycle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle

Abstract

718,985. Gas-blast switches. REYROLLE & CO., Ltd., A. March 13, 1953 [March 13, 1952] No. 6548/52. Class 38(5) A gas-blast circuit-breaker having synchronizing means for ensuring initiation of the arc at a predetermined instant in relation to a current zero, is of the type in which the arc is transferred from the moving contact to a stationary arcing electrode before quenching so that " current chopping " in the case of small magnetizing currents is avoided. The circuit-breaker has a blast passage C with a nozzle C<SP>1</SP> serving as an arcing electrode, a fixed contact D and a laterally moving contact E. In operation, a polarized highspeed primary relay K connects secondary relays L, M alternately on successive half cycles to a tripping line A<SP>1</SP>. When the line A<SP>1</SP> is energized by a tripping signal from a source A, the secondary relay L, or M, which is selected at the moment the signal occurs, is energized and is held in over contacts L<SP>1</SP> or M<SP>1</SP>. At the same time a solenoid B is energized to open a blast valve and admit compressed gas to the circuit-breaker. At the end of the half cycle in which the tripping signal is initiated, the relay K changes over its contacts K<SP>1</SP>, K<SP>2</SP> to energize the other secondary relay. L or M and a circuit is then completed through contacts L<SP>2</SP>, M<SP>2</SP> to a delay relay N. When the relay N closes its contacts, a solenoid J is energized to move a detent H and unlock a lever G. The compressed gas in the passage C is now able to move a piston F and open the contacts D, E. The time of delay of the relay N would be so adjusted that the total time elapsing from the first current zero after the initiation of the tripping signal to the instant at which the are has travelled to the nozzle C\ is equal to one cycle. Should the synchronizing control fail to unlock the piston F, a piston R, supplied through a constriction R<SP>2</SP>, is able to turn the detent H through a lost motion connection R<SP>3</SP>.
GB654852A 1952-03-13 1952-03-13 Improvements relating to gas blast circuit breakers Expired GB718985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB654852A GB718985A (en) 1952-03-13 1952-03-13 Improvements relating to gas blast circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB654852A GB718985A (en) 1952-03-13 1952-03-13 Improvements relating to gas blast circuit breakers

Publications (1)

Publication Number Publication Date
GB718985A true GB718985A (en) 1954-11-24

Family

ID=9816504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB654852A Expired GB718985A (en) 1952-03-13 1952-03-13 Improvements relating to gas blast circuit breakers

Country Status (1)

Country Link
GB (1) GB718985A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215797A (en) * 1961-12-28 1965-11-02 Siemens Ag Synchronous-type circuit interrupter with holding magnet for releasing latching means
US3257531A (en) * 1960-08-31 1966-06-21 Siemens Ag Synchronized circuit interrupter with shunting impedance contacts
US3378727A (en) * 1965-05-14 1968-04-16 Siemens Ag Circuit breaker for interrupting at zero current and automatically reclosing after unsuccessful interruption
EP0470678A1 (en) * 1990-08-09 1992-02-12 Siemens Aktiengesellschaft High voltage SF6 circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257531A (en) * 1960-08-31 1966-06-21 Siemens Ag Synchronized circuit interrupter with shunting impedance contacts
US3215797A (en) * 1961-12-28 1965-11-02 Siemens Ag Synchronous-type circuit interrupter with holding magnet for releasing latching means
US3378727A (en) * 1965-05-14 1968-04-16 Siemens Ag Circuit breaker for interrupting at zero current and automatically reclosing after unsuccessful interruption
EP0470678A1 (en) * 1990-08-09 1992-02-12 Siemens Aktiengesellschaft High voltage SF6 circuit breaker
EP0470302A1 (en) * 1990-08-09 1992-02-12 Siemens Aktiengesellschaft High voltage SF6 pressurised gas circuit breaker

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