CA995807A - Circuit breaker panelboard with grounded neutral protection - Google Patents

Circuit breaker panelboard with grounded neutral protection

Info

Publication number
CA995807A
CA995807A CA184,007A CA184007A CA995807A CA 995807 A CA995807 A CA 995807A CA 184007 A CA184007 A CA 184007A CA 995807 A CA995807 A CA 995807A
Authority
CA
Canada
Prior art keywords
circuit breaker
grounded neutral
neutral protection
breaker panelboard
panelboard
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
CA184,007A
Other languages
English (en)
Other versions
CA184007S (en
Inventor
Bruce T. Polley
Wallace W. Wahlgren
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of CA995807A publication Critical patent/CA995807A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H3/33—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 using summation current transformers
    • H02H3/331—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 using summation current transformers responsive to earthing of the neutral conductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Distribution Board (AREA)
CA184,007A 1972-10-24 1973-10-23 Circuit breaker panelboard with grounded neutral protection Expired CA995807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29981672A 1972-10-24 1972-10-24

Publications (1)

Publication Number Publication Date
CA995807A true CA995807A (en) 1976-08-24

Family

ID=23156417

Family Applications (1)

Application Number Title Priority Date Filing Date
CA184,007A Expired CA995807A (en) 1972-10-24 1973-10-23 Circuit breaker panelboard with grounded neutral protection

Country Status (7)

Country Link
US (1) US3745415A (xx)
JP (1) JPS5242459B2 (xx)
CA (1) CA995807A (xx)
FR (1) FR2204063B1 (xx)
GB (1) GB1429065A (xx)
IT (1) IT998858B (xx)
ZA (1) ZA737947B (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869649A (en) * 1973-04-13 1975-03-04 Gen Electric Electrical protective panel assembly with sensitive ground fault protecting means
US3932825A (en) * 1974-04-09 1976-01-13 Federal Pacific Electric Company Current limiting circuit breaker system
US3908154A (en) * 1974-09-13 1975-09-23 Ite Imperial Corp Two pole ground fault circuit protector
US4172271A (en) * 1978-05-08 1979-10-23 General Electric Company Fusible circuit interrupter with ground fault circuit protection
US5206777A (en) * 1991-09-23 1993-04-27 Eaton Corporation Three-phase panelboard using standard rated three-pole circuit protective devices in a grounded delta system
JP5905779B2 (ja) * 2012-06-13 2016-04-20 株式会社日立製作所 抵抗器及びそれを備えたスイッチギヤ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611035A (en) * 1970-06-08 1971-10-05 Rucker Co Ground fault protective system having grounded neutral protection

Also Published As

Publication number Publication date
IT998858B (it) 1976-02-20
JPS4993841A (xx) 1974-09-06
ZA737947B (en) 1974-08-28
GB1429065A (en) 1976-03-24
JPS5242459B2 (xx) 1977-10-25
US3745415A (en) 1973-07-10
FR2204063A1 (xx) 1974-05-17
FR2204063B1 (xx) 1976-10-01

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