GB887260A - Improvements in oil-blast electric circuit breakers - Google Patents

Improvements in oil-blast electric circuit breakers

Info

Publication number
GB887260A
GB887260A GB16914/60A GB1691460A GB887260A GB 887260 A GB887260 A GB 887260A GB 16914/60 A GB16914/60 A GB 16914/60A GB 1691460 A GB1691460 A GB 1691460A GB 887260 A GB887260 A GB 887260A
Authority
GB
United Kingdom
Prior art keywords
oil
chamber
compartments
channel
arc
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
GB16914/60A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB887260A publication Critical patent/GB887260A/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

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

887,260. Liquid-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. May 13, 1960 [May 15, 1959], No. 16914/60. Class 38 (5). The extinguishing chamber 1 of an oilblast circuit-breaker is immersed in oil and contains an arcing chamber forming a channel 2 for a moving contact 5 engageable with a fixed contact 4, the oil level in the chamber 1 being determined by the position of an opening 10. The arcing chamber has internal and external recesses 6, 7 arranged in adjacent superimposed pairs to form outlet and inlet slots which are controlled by non-return valves 8, 8<SP>1</SP> and connect the channel 2 with compartments 12, 12<SP>1</SP> and 13, 13<SP>1</SP> formed by vertical walls 11 and communicating with each other through the top of the chamber 1. When the contacts 4, 5 open, oil and arc gases are forced through the inlet slots into compartments 12, 12<SP>1</SP> thus compressing gas in the space 14, which gas, at the first current zero, expands to force oil from the compartments 13, 13<SP>1</SP> through the outlet slots into the channel 2 to extinguish the arc, the whole process being repeated if necessary. After arc extinction oil flows through openings 9 to refill the chamber 1.
GB16914/60A 1959-05-15 1960-05-13 Improvements in oil-blast electric circuit breakers Expired GB887260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE887260X 1959-05-15

Publications (1)

Publication Number Publication Date
GB887260A true GB887260A (en) 1962-01-17

Family

ID=20374579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16914/60A Expired GB887260A (en) 1959-05-15 1960-05-13 Improvements in oil-blast electric circuit breakers

Country Status (3)

Country Link
US (1) US3056873A (en)
DE (1) DE1131299B (en)
GB (1) GB887260A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999054902A1 (en) * 1998-04-21 1999-10-28 Cooper Industries, Inc. An interrupt assembly for a primary circuit breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166659A (en) * 1959-12-16 1965-01-19 Asea Ab Oil circuit breaker comprising an extinguishing chamber for high voltages

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389346A (en) * 1942-08-08 1945-11-20 Westinghouse Electric Corp Circuit interrupter
US2806111A (en) * 1954-04-26 1957-09-10 Westinghouse Electric Corp Circuit interrupters
DE1023111B (en) * 1954-06-04 1958-01-23 Asea Ab Fire chamber for low-oil electrical circuit breakers
DE1017684B (en) * 1954-07-17 1957-10-17 Sachsenwerk Licht & Kraft Ag Fire chamber for low-oil electrical circuit breakers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999054902A1 (en) * 1998-04-21 1999-10-28 Cooper Industries, Inc. An interrupt assembly for a primary circuit breaker
US6111212A (en) * 1998-04-21 2000-08-29 Cooper Industries, Inc. Interrupt assembly for a primary circuit breaker

Also Published As

Publication number Publication date
DE1131299B (en) 1962-06-14
US3056873A (en) 1962-10-02

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