GB1438708A - Electrical circuit breaker - Google Patents

Electrical circuit breaker

Info

Publication number
GB1438708A
GB1438708A GB5816373A GB5816373A GB1438708A GB 1438708 A GB1438708 A GB 1438708A GB 5816373 A GB5816373 A GB 5816373A GB 5816373 A GB5816373 A GB 5816373A GB 1438708 A GB1438708 A GB 1438708A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
gas
cylinder
breaker
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
GB5816373A
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of GB1438708A publication Critical patent/GB1438708A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/905—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the compression volume being formed by a movable cylinder and a semi-mobile piston

Landscapes

  • Circuit Breakers (AREA)

Abstract

1438708 Gas-blast circuit-breaker FUJI ELECTRIC CO Ltd 14 Dec 1973 [14 Dec 1972] 58163/73 Heading H1N A gas-blast circuit-breaker with a moving cylinder 3 and fixed first-piston 4 has the cylinder space divided into main and auxiliary regions A and B respectively by means of a resiliently-mounted second-piston 7 which is provided with a one-way valve 9 to allow gas to transfer from region B to region A when pressure in A falls below that in B. The spring 8 maintains the piston 3 in position against the pressure in A during contact opening until a predetermined value has been reached, at which point it yields allowing the pressure in B to increase. This is stated to give an improved P/V characteristic as indicated in curves given in Fig. 4 (not shown) and thus reduce the arc-quenching time. When the contacts part and quenching gas, e.g. SF 6 , is discharged on to the arc, the fall in pressure in A is partly compensated for by the opening of the valve 9. An alternative arrangement in which piston 7 is mounted on the cylinder is envisaged but not described.
GB5816373A 1972-12-14 1973-12-14 Electrical circuit breaker Expired GB1438708A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12549472A JPS4981874A (en) 1972-12-14 1972-12-14

Publications (1)

Publication Number Publication Date
GB1438708A true GB1438708A (en) 1976-06-09

Family

ID=14911474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5816373A Expired GB1438708A (en) 1972-12-14 1973-12-14 Electrical circuit breaker

Country Status (6)

Country Link
JP (1) JPS4981874A (en)
DE (1) DE2363171A1 (en)
FR (1) FR2210814B1 (en)
GB (1) GB1438708A (en)
IT (1) IT1002225B (en)
NL (1) NL7317004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042770C (en) * 1992-09-29 1999-03-31 Gec阿尔斯托姆T&D公司 Disjoncteur a haute tension a auto-soufflage ayant une chambre de coupure a compressing de gaz reduite

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291601A1 (en) * 1974-11-15 1976-06-11 Alsthom Cgee Arc extinction by aurocompression in circuit breakers - involves use of cylinder type unit which has piston in centre delayed by spring
DE2529623A1 (en) * 1975-07-03 1977-01-20 Licentia Gmbh ELECTRIC COMPRESSION SWITCH
CH590552A5 (en) * 1975-09-26 1977-08-15 Sprecher & Schuh Ag
JPS55139728A (en) * 1979-04-18 1980-10-31 Mitsubishi Electric Corp Switching device
DE3104411A1 (en) * 1981-02-09 1982-08-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrical compression switch
DE3322597A1 (en) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau EXHAUST GAS SWITCH
DE4015179C2 (en) * 1990-05-11 1994-03-10 Licentia Gmbh Gas pressure switch
SE466979B (en) * 1990-09-11 1992-05-04 Asea Brown Boveri SELF-Blow type high voltage switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042770C (en) * 1992-09-29 1999-03-31 Gec阿尔斯托姆T&D公司 Disjoncteur a haute tension a auto-soufflage ayant une chambre de coupure a compressing de gaz reduite

Also Published As

Publication number Publication date
DE2363171A1 (en) 1974-06-20
FR2210814A1 (en) 1974-07-12
IT1002225B (en) 1976-05-20
FR2210814B1 (en) 1979-01-26
NL7317004A (en) 1974-06-18
JPS4981874A (en) 1974-08-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee