ZA747346B - An improvement in or relating to ground fault circuit breakers with cold temperature bimetal construction - Google Patents

An improvement in or relating to ground fault circuit breakers with cold temperature bimetal construction

Info

Publication number
ZA747346B
ZA747346B ZA00747346A ZA747346A ZA747346B ZA 747346 B ZA747346 B ZA 747346B ZA 00747346 A ZA00747346 A ZA 00747346A ZA 747346 A ZA747346 A ZA 747346A ZA 747346 B ZA747346 B ZA 747346B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
ground fault
circuit breakers
cold temperature
Prior art date
Application number
ZA00747346A
Inventor
J Misencik
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 ZA747346B publication Critical patent/ZA747346B/en

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)
ZA00747346A 1973-12-04 1974-11-15 An improvement in or relating to ground fault circuit breakers with cold temperature bimetal construction ZA747346B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA747346B true ZA747346B (en) 1975-11-26

Family

ID=23671119

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00747346A ZA747346B (en) 1973-12-04 1974-11-15 An improvement in or relating to ground fault circuit breakers with cold temperature bimetal construction

Country Status (4)

Country Link
US (1) US3858130A (en)
CA (1) CA1013846A (en)
GB (1) GB1483914A (en)
ZA (1) ZA747346B (en)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999103A (en) * 1975-03-14 1976-12-21 Westinghouse Electric Corporation Multi-pole ground fault circuit breaker
IT1223522B (en) * 1987-12-17 1990-09-19 Elettrocondutture DIFFERENTIAL CURRENT DETECTOR DEVICE IN ELECTRICAL SYSTEMS, STRUCTURED IN A WAY TO BE COUPLED, IN A CLOSED POSITION, TO NORMAL SWITCHES WITHOUT DANGER OF ACCIDENTAL ASSEMBLY ERRORS
US5012382A (en) * 1990-06-14 1991-04-30 Teal Electronics Corporation Low impedance power conditioner apparatus and method
ZA926652B (en) * 1991-09-26 1993-03-16 Westinghouse Electric Corp Circuit breaker with protection against sputtering arc faults
US5224006A (en) * 1991-09-26 1993-06-29 Westinghouse Electric Corp. Electronic circuit breaker with protection against sputtering arc faults and ground faults
US5434509A (en) * 1992-07-30 1995-07-18 Blades; Frederick K. Method and apparatus for detecting arcing in alternating-current power systems by monitoring high-frequency noise
US5432455A (en) * 1992-07-30 1995-07-11 Blades; Frederick K. Method and apparatus for detecting arcing in alternating current power systems by monitoring high-frequency noise
ZA941138B (en) * 1993-02-26 1994-08-29 Westinghouse Electric Corp Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault.
US5420740A (en) * 1993-09-15 1995-05-30 Eaton Corporation Ground fault circuit interrupter with immunity to wide band noise
US6452767B1 (en) 1995-03-13 2002-09-17 Square D Company Arcing fault detection system for a secondary line of a current transformer
US6313642B1 (en) 1995-03-13 2001-11-06 Square D Company Apparatus and method for testing an arcing fault detection system
US6259996B1 (en) 1998-02-19 2001-07-10 Square D Company Arc fault detection system
US6532424B1 (en) 1995-03-13 2003-03-11 Square D Company Electrical fault detection circuit with dual-mode power supply
US6246556B1 (en) 1995-03-13 2001-06-12 Square D Company Electrical fault detection system
US6377427B1 (en) 1995-03-13 2002-04-23 Square D Company Arc fault protected electrical receptacle
US6034611A (en) * 1997-02-04 2000-03-07 Square D Company Electrical isolation device
US6242993B1 (en) 1995-03-13 2001-06-05 Square D Company Apparatus for use in arcing fault detection systems
US6313641B1 (en) 1995-03-13 2001-11-06 Square D Company Method and system for detecting arcing faults and testing such system
US5682101A (en) 1995-03-13 1997-10-28 Square D Company Arcing fault detection system
US5825598A (en) * 1997-02-11 1998-10-20 Square D Company Arcing fault detection system installed in a panelboard
US5834940A (en) * 1996-09-24 1998-11-10 Brooks; Stanley J. Arcing fault detector testing and demonstration system
US5847913A (en) * 1997-02-21 1998-12-08 Square D Company Trip indicators for circuit protection devices
US5946179A (en) * 1997-03-25 1999-08-31 Square D Company Electronically controlled circuit breaker with integrated latch tripping
US5839092A (en) * 1997-03-26 1998-11-17 Square D Company Arcing fault detection system using fluctuations in current peaks and waveforms
US5969921A (en) * 1998-01-29 1999-10-19 Eaton Corporation Ground fault electrical switching apparatus for coordinating tripping with a downstream ground fault switch
US6782329B2 (en) 1998-02-19 2004-08-24 Square D Company Detection of arcing faults using bifurcated wiring system
US5986860A (en) * 1998-02-19 1999-11-16 Square D Company Zone arc fault detection
US6477021B1 (en) 1998-02-19 2002-11-05 Square D Company Blocking/inhibiting operation in an arc fault detection system
US6567250B1 (en) 1998-02-19 2003-05-20 Square D Company Arc fault protected device
US6625550B1 (en) 1998-02-19 2003-09-23 Square D Company Arc fault detection for aircraft
US6621669B1 (en) 1998-02-19 2003-09-16 Square D Company Arc fault receptacle with a feed-through connection
US7136265B2 (en) 2001-10-17 2006-11-14 Square D Company Load recognition and series arc detection using bandpass filter signatures
US7151656B2 (en) 2001-10-17 2006-12-19 Square D Company Arc fault circuit interrupter system
US7068480B2 (en) 2001-10-17 2006-06-27 Square D Company Arc detection using load recognition, harmonic content and broadband noise
US6822543B1 (en) 2003-09-24 2004-11-23 General Electric Company System and method for controlling trip unit mechanical stress
AT504607A1 (en) * 2004-04-19 2008-06-15 Moeller Gebaeudeautomation Kg SWITCHGEAR
US7041921B2 (en) * 2004-04-19 2006-05-09 Moeller Gebäudeautomation KG Switching device
US7253637B2 (en) 2005-09-13 2007-08-07 Square D Company Arc fault circuit interrupter system
CN101145478B (en) * 2007-10-12 2010-07-28 温州市新蓝天电器有限公司 Circuit breaker with leakage, overloading and short circuit protector
US8729988B1 (en) * 2013-03-13 2014-05-20 Eaton Corporation Trip device support frame and top frame calibration method
US8872606B1 (en) 2013-04-23 2014-10-28 Eaton Corporation Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same
US10535484B2 (en) * 2017-11-29 2020-01-14 Schneider Electric USA, Inc. Noncontact solenoid for miniature circuit breakers with a movable frame and magnetic coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691708A (en) * 1951-10-10 1954-10-12 Westinghouse Electric Corp Circuit breaker
US2786917A (en) * 1954-06-04 1957-03-26 Gen Electric Circuit breaker trip device
US3636482A (en) * 1970-05-25 1972-01-18 Federal Pacific Electric Co Modular circuit breakers and panelboards with ground-fault protection

Also Published As

Publication number Publication date
GB1483914A (en) 1977-08-24
CA1013846A (en) 1977-07-12
US3858130A (en) 1974-12-31
AU7565374A (en) 1976-05-27

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