DE2529713C2 - - Google Patents

Info

Publication number
DE2529713C2
DE2529713C2 DE2529713A DE2529713A DE2529713C2 DE 2529713 C2 DE2529713 C2 DE 2529713C2 DE 2529713 A DE2529713 A DE 2529713A DE 2529713 A DE2529713 A DE 2529713A DE 2529713 C2 DE2529713 C2 DE 2529713C2
Authority
DE
Germany
Prior art keywords
switch
contact
armature
earth fault
circuit breaker
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
DE2529713A
Other languages
German (de)
English (en)
Other versions
DE2529713A1 (de
Inventor
Robert Edward Cedar Rapids Ia. Us Dietz
Henry John Alburnette Ia. Us Zylstra
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.)
Schneider Electric USA Inc
Original Assignee
Square D 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 Square D Co filed Critical Square D Co
Publication of DE2529713A1 publication Critical patent/DE2529713A1/de
Application granted granted Critical
Publication of DE2529713C2 publication Critical patent/DE2529713C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
DE19752529713 1974-07-05 1975-07-03 Leistungsschalter fuer eine elektrische erdschlusschutzschaltung Granted DE2529713A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48604574A 1974-07-05 1974-07-05

Publications (2)

Publication Number Publication Date
DE2529713A1 DE2529713A1 (de) 1976-01-22
DE2529713C2 true DE2529713C2 (it) 1987-10-22

Family

ID=23930390

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752529713 Granted DE2529713A1 (de) 1974-07-05 1975-07-03 Leistungsschalter fuer eine elektrische erdschlusschutzschaltung

Country Status (6)

Country Link
CA (1) CA1058739A (it)
DE (1) DE2529713A1 (it)
FR (1) FR2277429A1 (it)
GB (1) GB1521082A (it)
IT (1) IT1036450B (it)
ZA (1) ZA754168B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5144516A (en) * 1991-02-04 1992-09-01 Wing Shing Products Company, Ltd. Leakage current circuit interrupter device
NO304860B1 (no) * 1991-07-22 1999-02-22 Pdl Holdings Ltd Brytermekanisme

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555360A (en) * 1969-03-20 1971-01-12 Hubbell Inc Harvey Phase controlled ground fault circuit interrupter

Also Published As

Publication number Publication date
FR2277429B1 (it) 1981-05-29
FR2277429A1 (fr) 1976-01-30
DE2529713A1 (de) 1976-01-22
ZA754168B (en) 1976-06-30
CA1058739A (en) 1979-07-17
GB1521082A (en) 1978-08-09
IT1036450B (it) 1979-10-30

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: H02H 3/33

8126 Change of the secondary classification

Ipc: ENTFAELLT

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee