ZA712480B - An improvement in or relating to circuit breaker including improved overcurrent protective device - Google Patents

An improvement in or relating to circuit breaker including improved overcurrent protective device

Info

Publication number
ZA712480B
ZA712480B ZA712480A ZA712480A ZA712480B ZA 712480 B ZA712480 B ZA 712480B ZA 712480 A ZA712480 A ZA 712480A ZA 712480 A ZA712480 A ZA 712480A ZA 712480 B ZA712480 B ZA 712480B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
circuit breaker
protective device
including improved
Prior art date
Application number
ZA712480A
Inventor
J Wilson
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ZA712480B publication Critical patent/ZA712480B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
ZA712480A 1970-05-07 1971-04-19 An improvement in or relating to circuit breaker including improved overcurrent protective device ZA712480B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54090070A 1970-05-07 1970-05-07
US35409A US3634730A (en) 1970-05-07 1970-05-07 Circuit breaker including improved overcurrent protective device

Publications (1)

Publication Number Publication Date
ZA712480B true ZA712480B (en) 1972-01-26

Family

ID=69419836

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA712480A ZA712480B (en) 1970-05-07 1971-04-19 An improvement in or relating to circuit breaker including improved overcurrent protective device

Country Status (5)

Country Link
US (1) US3634730A (en)
JP (2) JPS466178A (en)
BR (1) BR7002780D0 (en)
CA (1) CA912690A (en)
ZA (1) ZA712480B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713004A (en) * 1972-03-30 1973-01-23 Westinghouse Electric Corp Circuit breaker including improved protective device
US3713005A (en) * 1972-03-30 1973-01-23 Westinghouse Electric Corp Circuit breaker including improved overcurrent protective device
JPS4939045A (en) * 1972-08-21 1974-04-11
CH566009A5 (en) * 1973-12-14 1975-08-29 Secheron Atel
JPS5335140A (en) * 1976-09-13 1978-04-01 Terasaki Denki Sangyo Kk Circuit breaker tripping unit
US4104691A (en) * 1976-09-30 1978-08-01 Westinghouse Electric Corp. Circuit breaker apparatus including asymmetrical fault detector
FR2547122B1 (en) * 1983-06-03 1985-07-05 Merlin Gerin SELECTIVE ELECTRONIC TRIGGER ASSOCIATED WITH A LIMITING CIRCUIT BREAKER
US4704546A (en) * 1986-07-31 1987-11-03 Westinghouse Electric Corp. Auctioneering circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25762A (en) * 1859-10-11 Lasting-pincers
US3419757A (en) * 1966-04-08 1968-12-31 Gen Electric Overcurrent protective means
US3444434A (en) * 1967-03-06 1969-05-13 Ite Imperial Corp Static time-overcurrent relay
US3484652A (en) * 1967-07-17 1969-12-16 Allis Chalmers Mfg Co Protection of a pulse modulated power system
JPS4946178A (en) * 1972-09-12 1974-05-02

Also Published As

Publication number Publication date
JPS466178A (en) 1971-12-07
CA912690A (en) 1972-10-17
JPS5392140U (en) 1978-07-27
US3634730A (en) 1972-01-11
BR7002780D0 (en) 1973-04-17

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