EP0158520A3 - Load break switch with safety mechanism - Google Patents

Load break switch with safety mechanism Download PDF

Info

Publication number
EP0158520A3
EP0158520A3 EP85302397A EP85302397A EP0158520A3 EP 0158520 A3 EP0158520 A3 EP 0158520A3 EP 85302397 A EP85302397 A EP 85302397A EP 85302397 A EP85302397 A EP 85302397A EP 0158520 A3 EP0158520 A3 EP 0158520A3
Authority
EP
European Patent Office
Prior art keywords
switch
bellows
contact assembly
pressure
load break
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.)
Ceased
Application number
EP85302397A
Other languages
German (de)
French (fr)
Other versions
EP0158520A2 (en
Inventor
Philip Barkan
David Stanton Gere
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.)
Raychem Corp
Original Assignee
Raychem Corp
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 Raychem Corp filed Critical Raychem Corp
Publication of EP0158520A2 publication Critical patent/EP0158520A2/en
Publication of EP0158520A3 publication Critical patent/EP0158520A3/en
Ceased 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H33/563—Gas reservoirs comprising means for monitoring the density of the insulating gas

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Burglar Alarm Systems (AREA)
  • Casings For Electric Apparatus (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

A single-phase ground enclosed load break switch for distribution voltages has a hermetically sealed cylindrical metal housing (210) of from 2 to 6 inches diameter which contains an insulating gas under pressure. The switch has a movable contact assembly to contact a pair of opposed stationary coaxial conductors with the housing. A rocking bellows (266) at the fulcrum of a crank actuator (264) provides a compact hermetic seal for the actuator without excessive strain of the bellows. A safety interlock (302,310,260) with a visual indicator (318,320) locks the contact assembly in case of a loss of pressure. Excessive pressure in the switch causes the bellows (266) to be punctured with consequent locking of the contact assembly. The switch is small enough to be mounted directly on a transformer or placed into a cable, without the need for a separate enclosure.
EP85302397A 1984-04-09 1985-04-04 Load break switch with safety mechanism Ceased EP0158520A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59855884A 1984-04-09 1984-04-09
US598558 1984-04-09

Publications (2)

Publication Number Publication Date
EP0158520A2 EP0158520A2 (en) 1985-10-16
EP0158520A3 true EP0158520A3 (en) 1986-11-12

Family

ID=24396052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85302397A Ceased EP0158520A3 (en) 1984-04-09 1985-04-04 Load break switch with safety mechanism

Country Status (9)

Country Link
EP (1) EP0158520A3 (en)
JP (1) JPS60230324A (en)
AU (1) AU4095385A (en)
BR (1) BR8501630A (en)
CA (1) CA1253184A (en)
DK (1) DK153785A (en)
ES (1) ES8608225A1 (en)
NO (1) NO851407L (en)
ZA (1) ZA852616B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756968B1 (en) * 1996-12-09 1999-01-08 Gec Alsthom T & D Sa CIRCUIT BREAKER WITH REDUCED SF6 VOLUME

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841341A (en) * 1957-09-12 1960-07-13 Asea Ab High-tension air-blast circuit-breaker
US3077527A (en) * 1961-06-21 1963-02-12 S & C Electric Co Circuit interrupter
CH372722A (en) * 1958-01-30 1963-10-31 Continental Elektro Ind Ag High voltage compressed air switch
GB967521A (en) * 1961-09-19 1964-08-26 Westinghouse Electric Corp Improvements in gas-filled electric switches
GB1026435A (en) * 1964-03-09 1966-04-20 S & C Electric Co Pressure relief means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841341A (en) * 1957-09-12 1960-07-13 Asea Ab High-tension air-blast circuit-breaker
CH372722A (en) * 1958-01-30 1963-10-31 Continental Elektro Ind Ag High voltage compressed air switch
US3077527A (en) * 1961-06-21 1963-02-12 S & C Electric Co Circuit interrupter
GB967521A (en) * 1961-09-19 1964-08-26 Westinghouse Electric Corp Improvements in gas-filled electric switches
GB1026435A (en) * 1964-03-09 1966-04-20 S & C Electric Co Pressure relief means

Also Published As

Publication number Publication date
CA1253184A (en) 1989-04-25
AU4095385A (en) 1985-10-17
DK153785A (en) 1985-10-10
BR8501630A (en) 1985-12-03
DK153785D0 (en) 1985-04-03
NO851407L (en) 1985-10-10
EP0158520A2 (en) 1985-10-16
ES542026A0 (en) 1986-06-01
JPS60230324A (en) 1985-11-15
ES8608225A1 (en) 1986-06-01
ZA852616B (en) 1986-12-30

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850415

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19871126

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RAYCHEM CORPORATION (A DELAWARE CORPORATION)

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19921024

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BARKAN, PHILIP

Inventor name: GERE, DAVID STANTON