GB1077042A - Improvements in or relating to electric switchgear - Google Patents

Improvements in or relating to electric switchgear

Info

Publication number
GB1077042A
GB1077042A GB678464A GB678464A GB1077042A GB 1077042 A GB1077042 A GB 1077042A GB 678464 A GB678464 A GB 678464A GB 678464 A GB678464 A GB 678464A GB 1077042 A GB1077042 A GB 1077042A
Authority
GB
United Kingdom
Prior art keywords
break
current
ohms
clears
feb
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
GB678464A
Inventor
Edmund Antoni Madenski
Kenneth George Love
Stanislaw Mieczyslaw Gonek
Frederick Peter Matravers
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.)
English Electric Co Ltd
Original Assignee
English 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB678464A priority Critical patent/GB1077042A/en
Priority to DE19651515652 priority patent/DE1515652A1/en
Priority to CH227465A priority patent/CH450523A/en
Priority to FR6087A priority patent/FR1424922A/en
Publication of GB1077042A publication Critical patent/GB1077042A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • 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
    • 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
    • H01H33/86—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve

Abstract

1,077,042. Gas blast switches. ENGLISH ELECTRIC CO. Ltd. Feb. 18, 1965 [Feb. 18, 1964], No. 6784/64. Heading H2B. In a double circuit-breaker generally as described in Specification 983,501, the parallel resistors 14, 16 are of different values, resistor 14 being of the order of 20-100 ohms while resistor 16 is of the order of 2000-12,000 ohms. Under severe overload the voltage is unequally divided so that main break 12 clears first inserting the low resistance 14 in series with the other break 13 causing the current to change from reactive to resistive and therefore bringing the current into phase with the voltage so that break 13 clears at the next current zero. Parallel capacitors 18, 19 equalize the voltages after interruption.
GB678464A 1964-02-18 1964-02-18 Improvements in or relating to electric switchgear Expired GB1077042A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB678464A GB1077042A (en) 1964-02-18 1964-02-18 Improvements in or relating to electric switchgear
DE19651515652 DE1515652A1 (en) 1964-02-18 1965-02-17 Electrical switchgear
CH227465A CH450523A (en) 1964-02-18 1965-02-18 Electrical switch-off device
FR6087A FR1424922A (en) 1964-02-18 1965-02-18 Electrical switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB678464A GB1077042A (en) 1964-02-18 1964-02-18 Improvements in or relating to electric switchgear

Publications (1)

Publication Number Publication Date
GB1077042A true GB1077042A (en) 1967-07-26

Family

ID=9820688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB678464A Expired GB1077042A (en) 1964-02-18 1964-02-18 Improvements in or relating to electric switchgear

Country Status (4)

Country Link
CH (1) CH450523A (en)
DE (1) DE1515652A1 (en)
FR (1) FR1424922A (en)
GB (1) GB1077042A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451011C2 (en) * 1974-10-26 1984-06-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt High-voltage circuit breakers with on and off resistors
JPS5840715A (en) * 1981-09-04 1983-03-09 株式会社東芝 Breaker
JPS59105226A (en) * 1982-12-09 1984-06-18 株式会社日立製作所 Breaker
FR2655188B1 (en) * 1989-11-29 1992-02-07 Alsthom Gec HIGH VOLTAGE CIRCUIT BREAKER AT VARISTANCES.

Also Published As

Publication number Publication date
FR1424922A (en) 1966-01-14
DE1515652A1 (en) 1969-12-11
CH450523A (en) 1968-01-31

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