GB927548A - Improvements in or relating to oil-poor circuit breakers - Google Patents

Improvements in or relating to oil-poor circuit breakers

Info

Publication number
GB927548A
GB927548A GB28442/61A GB2844261A GB927548A GB 927548 A GB927548 A GB 927548A GB 28442/61 A GB28442/61 A GB 28442/61A GB 2844261 A GB2844261 A GB 2844261A GB 927548 A GB927548 A GB 927548A
Authority
GB
United Kingdom
Prior art keywords
oil
valve
piston
axial
flow
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
GB28442/61A
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.)
Forges et Ateliers de Constructions Electriques de Jeumont SA
Original Assignee
Forges et Ateliers de Constructions Electriques de Jeumont 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 Forges et Ateliers de Constructions Electriques de Jeumont SA filed Critical Forges et Ateliers de Constructions Electriques de Jeumont SA
Publication of GB927548A publication Critical patent/GB927548A/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
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/75—Liquid-break switches, e.g. oil-break
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
    • 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

Landscapes

  • Circuit Breakers (AREA)

Abstract

927,548. Liquid-blast switches. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Aug. 4, 1961 [Aug. 12, 1960], No. 28442/61. Class 38 (5). In a small oil volume circuit-breaker having an intercepting device providing cross-jet and axial-flow arc extinction a plurality of valves are arranged to be operated at different oil pressures so as to provide pressure waves in the intercepting device in dependence upon the arcing conditions. As shown, the circuitbreaker has an intercepter chamber 2 including cross-jet and axial-flow arc extinction elements 5, 6. Valves 12 and 14 are arranged to close at different pressures since the latter is smaller and is spaced by passages 13, 3A at a greater distance from the contacts 3, 4. After the valve 14 is closed, by higher pressure, a valve 15, on which the valve 14 is mounted, is opened by increased pressure against the bias of an adjustable spring 16. The elements 5 are shaped as shown in Fig. 2 so as to shield the oil in areas 5A from arc radiation. The moving contact 4 has a hollow bore 4A including a non-return valve 17 so as to provide an axial stream of oil on low current arc interruption. The moving contact 4 is controlled by an hydraulic ram device 10 having a piston 20 with a conical extension 21 which enters a duct 22 with decreasing clearance to retard the final opening movement. To damp the final closing movement a piston 26 is moved by the piston 20 against the bias of a spring 26A and an oil escape slot 9A in the operating shaft 9 is tapered at its lower end to reduce the oil flow from the space above the pistons 20, 26.
GB28442/61A 1960-08-12 1961-08-04 Improvements in or relating to oil-poor circuit breakers Expired GB927548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR835705A FR1272157A (en) 1960-08-12 1960-08-12 Improvements to low oil volume circuit breakers

Publications (1)

Publication Number Publication Date
GB927548A true GB927548A (en) 1963-05-29

Family

ID=8737338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28442/61A Expired GB927548A (en) 1960-08-12 1961-08-04 Improvements in or relating to oil-poor circuit breakers

Country Status (5)

Country Link
BE (1) BE606696A (en)
CH (1) CH375062A (en)
DE (1) DE1293282B (en)
FR (1) FR1272157A (en)
GB (1) GB927548A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267242A (en) * 1964-03-09 1966-08-16 Ite Circuit Breaker Ltd Arc splitter plate design for oil circuit breaker
US3361885A (en) * 1965-02-26 1968-01-02 Ite Circuit Breaker Ltd Oil circuit breaker interrupter having keyed separable plates with laminar flow preventing projections and connection means for connecting the interrupter tube and stationary contacts within the interrupter tube to a common support

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181222A (en) * 1982-04-19 1983-10-22 株式会社東芝 Dc breaking device
US6111212A (en) * 1998-04-21 2000-08-29 Cooper Industries, Inc. Interrupt assembly for a primary circuit breaker

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671265C (en) * 1937-07-31 1939-02-03 Sachsenwerk Licht & Kraft Ag Fire chamber fluid switch
DE910078C (en) * 1942-03-24 1954-04-29 Voigt & Haeffner Ag Loeschkammer with a differential pumping device
DE905265C (en) * 1943-07-22 1954-03-01 Sachsenwerk Licht & Kraft Ag Low-liquid circuit breaker
DE837722C (en) * 1950-03-18 1952-05-02 Voigt & Haeffner Ag OEarm high-voltage switch with additional device for interrupting small currents
CH321292A (en) * 1954-04-30 1957-04-30 Oerlikon Maschf Extinguishing chamber of a circuit breaker with liquid extinguishing agent
NL97245C (en) * 1954-11-25
BE537744A (en) * 1955-04-28 1955-05-14
BE549271A (en) * 1955-06-08
DE1025487B (en) * 1956-07-30 1958-03-06 Frobert Michaelis Dipl Ing Loeschkammer for high voltage line switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267242A (en) * 1964-03-09 1966-08-16 Ite Circuit Breaker Ltd Arc splitter plate design for oil circuit breaker
US3361885A (en) * 1965-02-26 1968-01-02 Ite Circuit Breaker Ltd Oil circuit breaker interrupter having keyed separable plates with laminar flow preventing projections and connection means for connecting the interrupter tube and stationary contacts within the interrupter tube to a common support

Also Published As

Publication number Publication date
FR1272157A (en) 1961-09-22
CH375062A (en) 1964-02-15
DE1293282B (en) 1969-04-24
BE606696A (en) 1961-11-16

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