AU7565374A - Improvements in or relating to ground fault circuit breaker with cold temperature bimetal construction - Google Patents

Improvements in or relating to ground fault circuit breaker with cold temperature bimetal construction

Info

Publication number
AU7565374A
AU7565374A AU75653/74A AU7565374A AU7565374A AU 7565374 A AU7565374 A AU 7565374A AU 75653/74 A AU75653/74 A AU 75653/74A AU 7565374 A AU7565374 A AU 7565374A AU 7565374 A AU7565374 A AU 7565374A
Authority
AU
Australia
Prior art keywords
relating
circuit breaker
ground fault
cold temperature
fault circuit
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
AU75653/74A
Other versions
AU493717B2 (en
Inventor
Joseph Misencik John
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.)
CBS Corp
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
Application granted granted Critical
Publication of AU7565374A publication Critical patent/AU7565374A/en
Publication of AU493717B2 publication Critical patent/AU493717B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
AU75653/74A 1973-12-04 1974-11-22 Improvements in or relating to ground fault circuit breaker with cold temperature bimetal construction Expired AU493717B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USUS421573 1973-12-04
US00421573A US3858130A (en) 1973-12-04 1973-12-04 Ground fault circuit breaker with cold temperature bimetal constriction

Publications (2)

Publication Number Publication Date
AU7565374A true AU7565374A (en) 1976-05-27
AU493717B2 AU493717B2 (en) 1976-05-27

Family

ID=

Also Published As

Publication number Publication date
GB1483914A (en) 1977-08-24
CA1013846A (en) 1977-07-12
ZA747346B (en) 1975-11-26
US3858130A (en) 1974-12-31

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