GB884854A - Improvements in air or gas blast electric circuit-breakers - Google Patents

Improvements in air or gas blast electric circuit-breakers

Info

Publication number
GB884854A
GB884854A GB20717/57A GB2071757A GB884854A GB 884854 A GB884854 A GB 884854A GB 20717/57 A GB20717/57 A GB 20717/57A GB 2071757 A GB2071757 A GB 2071757A GB 884854 A GB884854 A GB 884854A
Authority
GB
United Kingdom
Prior art keywords
piston
contacts
contact
flange
spring
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
GB20717/57A
Inventor
Albert Roxburgh
Albert Leigh
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2071657A priority Critical patent/GB884853A/en
Priority to GB20717/57A priority patent/GB884854A/en
Priority to CH6092658A priority patent/CH364830A/en
Priority to US743758A priority patent/US3017482A/en
Priority to US743759A priority patent/US2902570A/en
Priority to CH6092558A priority patent/CH366580A/en
Priority to FR769157A priority patent/FR1214866A/en
Priority to FR1210804D priority patent/FR1210804A/en
Priority to DEB49454A priority patent/DE1168994B/en
Priority to DEB49455A priority patent/DE1201893B/en
Publication of GB884854A publication Critical patent/GB884854A/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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/168—Impedances connected with contacts the impedance being inserted both while closing and while opening the switch
    • 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
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • H01H33/83—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas wherein the contacts are opened by the flow of air or gas

Landscapes

  • Circuit Breakers (AREA)

Abstract

884,854. Gas-blast switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 23, 1958 [July 1, 1957], No. 20717/57. Class 38 (5). A gas-blast circuit-breaker with a resistance and auxiliary contacts in parallel with the main contacts is arranged so that the auxiliary contacts are controlled by the movement of the main contacts to open after and close before the main contacts. As shown, for one unit of a multibreak circuit-breaker, the fixed contact 1 is engaged by a hollow movable contact 2 biased by a spring 20 and having its end formed as a piston 11 slidable in a cylinder 12. A fixed tubular casing 7 surrounds the contact 2 and is apertured at 29 and at 28 in its fixing flange 9. A ring piston 26 has a trunk 27 slidable within the casing 7 and is biased away from a flange 30 on the piston 11 by a light spring 32. When pressure gas is admitted to the passage 6 by a blast valve such as that described in Specification 821,659, it passes through apertures 28 so that the piston 26 is moved to strike the flange 30 and move the contact 2 until the piston 26 is stopped by ends 34 of the part of the casing 12 in which it moves. Pressure gas also passes into the chamber 36 through apertures 29 and passages 35 in the flange 30, and when this is sufficient to overcome the spring 20 the contact 2 is moved further to the left until its end 21 seals the exhaust port 18. The auxiliary moving contact 40 is biased to the open position by a spring 47 and has a sliding pin-and-socket connection with a member 51 on the end of a lever 37 which is pivoted at 38 and carries a roller 52 engaging a cam surface on the piston 11. During the second stage of the contact movement the roller 52 passes down the surface 53 allowing the spring 47 to open the auxiliary contacts. Since the chamber 43 is in communication with the chamber 36, the contacts 40, 42 are surrounded by gas under pressure during their opening. When the passage 6 is vented to the atmosphere the contacts reclose, the auxiliary contacts making first and the chamber 36 being vented to the atmosphere at the end of the closing stroke through a port 12a in the cylinder 12. Passages may be provided between the flange 30 and the interior of the piston 11 to assist in this venting (Fig. 4, not shown). Specification 884,853 also is referred to.
GB20717/57A 1957-07-01 1957-07-01 Improvements in air or gas blast electric circuit-breakers Expired GB884854A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB2071657A GB884853A (en) 1957-07-01 1957-07-01 Improvements in air or gas blast electric circuit-breakers
GB20717/57A GB884854A (en) 1957-07-01 1957-07-01 Improvements in air or gas blast electric circuit-breakers
CH6092658A CH364830A (en) 1957-07-01 1958-06-23 Electric pressure gas switch
US743758A US3017482A (en) 1957-07-01 1958-06-23 Air or gas blast electric circuit breakers
US743759A US2902570A (en) 1957-07-01 1958-06-23 Air or gas blast electric circuit breakers
CH6092558A CH366580A (en) 1957-07-01 1958-06-23 Electric pressure gas switch
FR769157A FR1214866A (en) 1957-07-01 1958-06-30 Improvements to circuit breakers with gas or compressed air blowing
FR1210804D FR1210804A (en) 1957-07-01 1958-06-30 Improvements to compressed air circuit breakers
DEB49454A DE1168994B (en) 1957-07-01 1958-07-01 Contact drive for electrical pressure gas switch
DEB49455A DE1201893B (en) 1957-07-01 1958-07-01 Electric pressure gas switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20717/57A GB884854A (en) 1957-07-01 1957-07-01 Improvements in air or gas blast electric circuit-breakers

Publications (1)

Publication Number Publication Date
GB884854A true GB884854A (en) 1961-12-20

Family

ID=10150488

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20717/57A Expired GB884854A (en) 1957-07-01 1957-07-01 Improvements in air or gas blast electric circuit-breakers

Country Status (5)

Country Link
US (2) US3017482A (en)
CH (1) CH364830A (en)
DE (2) DE1168994B (en)
FR (2) FR1210804A (en)
GB (1) GB884854A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117975A (en) * 1982-03-31 1983-10-19 Westinghouse Electric Corp Circuit interrupter closing resistance mechanism
FR2550004A1 (en) * 1983-07-29 1985-02-01 Alsthom Atlantique High-voltage circuit breaker provided with a device for inserting resistors upon closure of the circuit breaker.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB884854A (en) * 1957-07-01 1961-12-20 Ass Elect Ind Improvements in air or gas blast electric circuit-breakers
US3087035A (en) * 1959-03-20 1963-04-23 Asea Ab Fluid operated circuit breaker
DE1244915B (en) * 1959-04-10 1967-07-20 Licentia Gmbh Pressurized gas switch, especially the wall construction type
DE1163940B (en) * 1960-02-25 1964-02-27 Asea Ab Compressed air switch with a series-connected separation point in one bushing
US3267241A (en) * 1964-10-05 1966-08-16 Gen Electric Multiple break high voltage circuit breaker with variable length gap control means
GB1162501A (en) * 1965-09-27 1969-08-27 English Electric Co Ltd Improvements in and relating to Protective Switching Devices.
US3482069A (en) * 1966-12-12 1969-12-02 Gen Electric Voltage controlling shunting resistor with operating cam contour modifying means
US4383150A (en) * 1978-09-12 1983-05-10 Westinghouse Electric Corp. Circuit-interrupters having shunting capacitance around the separable power contacts with capacitance disconnecting means therefor

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR636699A (en) * 1926-04-10 1928-04-14
DE588693C (en) * 1928-10-02 1933-11-28 Sigwart Ruppel Dipl Ing Switch with arc extinguishing by compressed gas
DE599314C (en) * 1932-03-16 1934-07-30 Bbc Brown Boveri & Cie Switch with arc extinguishing by flowing compressed gas
NL49406C (en) * 1936-12-30
GB541941A (en) * 1940-06-17 1941-12-18 Reyrolle A & Co Ltd Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type
BE447471A (en) * 1942-02-19
US2447656A (en) * 1944-05-24 1948-08-24 Westinghouse Electric Corp Compressed gas-operated circuit interrupter with position indicator
CH276833A (en) * 1947-05-15 1951-07-31 Usines Tchecoslovaques Metallu Compressed air switch with disconnector.
FR963331A (en) * 1947-09-24 1950-07-05
NL73206C (en) * 1948-07-23
BE490328A (en) * 1948-07-31
US2645697A (en) * 1949-12-21 1953-07-14 Gen Electric Electric circuit breaker
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance
CH316267A (en) * 1953-01-24 1956-09-30 Bbc Brown Boveri & Cie Switching device with switching points in series for power interruption and voltage isolation
DE933819C (en) * 1953-10-23 1955-10-06 Liebknecht Transformat Arrangement for switching off the protective resistors of high-voltage switches with compressed gas drive
DE1050857B (en) * 1954-03-02 1959-02-19
BE557909A (en) * 1956-07-10 Merlin Gerin
GB884854A (en) * 1957-07-01 1961-12-20 Ass Elect Ind Improvements in air or gas blast electric circuit-breakers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117975A (en) * 1982-03-31 1983-10-19 Westinghouse Electric Corp Circuit interrupter closing resistance mechanism
FR2550004A1 (en) * 1983-07-29 1985-02-01 Alsthom Atlantique High-voltage circuit breaker provided with a device for inserting resistors upon closure of the circuit breaker.

Also Published As

Publication number Publication date
FR1210804A (en) 1960-03-10
DE1168994B (en) 1964-04-30
CH364830A (en) 1962-10-15
US2902570A (en) 1959-09-01
DE1201893B (en) 1965-09-30
US3017482A (en) 1962-01-16
FR1214866A (en) 1960-04-12

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