CA958802A - Electrical apparatus including a ground fault sensor - Google Patents

Electrical apparatus including a ground fault sensor

Info

Publication number
CA958802A
CA958802A CA149,078A CA149078A CA958802A CA 958802 A CA958802 A CA 958802A CA 149078 A CA149078 A CA 149078A CA 958802 A CA958802 A CA 958802A
Authority
CA
Canada
Prior art keywords
apparatus including
ground fault
electrical apparatus
fault sensor
sensor
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
CA149,078A
Other languages
English (en)
Other versions
CA149078S (en
Inventor
Michael B. Brennen
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.)
Westinghouse Electric 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 CA958802A publication Critical patent/CA958802A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/347—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Emergency Protection Circuit Devices (AREA)
CA149,078A 1971-08-30 1972-08-10 Electrical apparatus including a ground fault sensor Expired CA958802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17588071A 1971-08-30 1971-08-30

Publications (1)

Publication Number Publication Date
CA958802A true CA958802A (en) 1974-12-03

Family

ID=22642037

Family Applications (1)

Application Number Title Priority Date Filing Date
CA149,078A Expired CA958802A (en) 1971-08-30 1972-08-10 Electrical apparatus including a ground fault sensor

Country Status (4)

Country Link
US (1) US3721862A (fr)
BE (1) BE788106A (fr)
CA (1) CA958802A (fr)
ZA (1) ZA724895B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801758A (zh) * 2018-01-16 2020-10-20 伊顿智能动力有限公司 具有触点载体位置感测的接触器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949272A (en) * 1974-11-19 1976-04-06 General Electric Company Ground-fault protective scheme for multiple-source electric distribution system
US4063299A (en) * 1975-10-24 1977-12-13 Eagle Electric Mfg. Co. Inc. Magnetically latched ground fault circuit interrupter
FR2444359A1 (fr) * 1978-12-12 1980-07-11 Barthelemy Louis Procede et dispositif pour la protection des personnes contre une electrocution
US7609492B2 (en) * 2006-06-30 2009-10-27 Hamilton Sundstrand Corporation Ground fault interrupts for solid state power controllers
US8618456B2 (en) * 2010-02-16 2013-12-31 Western Gas And Electric Company Inverter for a three-phase AC photovoltaic system
US8564916B2 (en) * 2010-02-16 2013-10-22 Western Gas And Electric Company Photovoltaic array ground fault detection method for utility-scale grounded solar electric power generating systems
US20120026631A1 (en) * 2010-08-02 2012-02-02 Greenvolts, Inc Photovoltaic array ground fault detection in an ungrounded solar electric power generating system and techniques to transition onto and off the utility grid
US10090665B2 (en) * 2014-02-21 2018-10-02 The Uab Research Foundation Method for detecting an open-phase condition of a transformer
US9793702B2 (en) 2014-12-19 2017-10-17 Hubbell Incorporated Delay circuit for circuit interrupting device
CN108604790B (zh) * 2015-12-18 2020-06-19 豪倍公司 用于电路中断装置的延迟电路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539866A (en) * 1967-10-11 1970-11-10 Federal Pacific Electric Co Multi-zone fault protection systems
US3567997A (en) * 1968-07-01 1971-03-02 Mc Graw Edison Co Fault sensing and actuating means for repeating circuit interrupter
US3496417A (en) * 1968-08-05 1970-02-17 Westinghouse Electric Corp Electric relay system
CA855386A (en) * 1968-10-07 1970-11-03 Westinghouse Electric Corporation Overcurrent protective device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801758A (zh) * 2018-01-16 2020-10-20 伊顿智能动力有限公司 具有触点载体位置感测的接触器
CN111801758B (zh) * 2018-01-16 2022-08-23 伊顿智能动力有限公司 具有触点载体位置感测的接触器

Also Published As

Publication number Publication date
US3721862A (en) 1973-03-20
ZA724895B (en) 1973-04-25
BE788106A (fr) 1973-02-28

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