IT1057577B - EARTH FAULT SWITCH DEVICE - Google Patents

EARTH FAULT SWITCH DEVICE

Info

Publication number
IT1057577B
IT1057577B IT21183/76A IT2118376A IT1057577B IT 1057577 B IT1057577 B IT 1057577B IT 21183/76 A IT21183/76 A IT 21183/76A IT 2118376 A IT2118376 A IT 2118376A IT 1057577 B IT1057577 B IT 1057577B
Authority
IT
Italy
Prior art keywords
switch device
earth fault
fault switch
earth
switch
Prior art date
Application number
IT21183/76A
Other languages
Italian (it)
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 IT1057577B publication Critical patent/IT1057577B/en

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)
  • Protection Of Transformers (AREA)
IT21183/76A 1975-03-14 1976-03-12 EARTH FAULT SWITCH DEVICE IT1057577B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55861875A 1975-03-14 1975-03-14

Publications (1)

Publication Number Publication Date
IT1057577B true IT1057577B (en) 1982-03-30

Family

ID=24230266

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21183/76A IT1057577B (en) 1975-03-14 1976-03-12 EARTH FAULT SWITCH DEVICE

Country Status (6)

Country Link
JP (1) JPS51114650A (en)
AU (1) AU501986B2 (en)
CA (1) CA1065960A (en)
GB (1) GB1531933A (en)
IT (1) IT1057577B (en)
ZA (1) ZA761086B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524071A (en) * 1978-08-11 1980-02-20 Matsushita Electric Ind Co Ltd Drainboard with tableware dryer
GB2077531B (en) * 1980-06-04 1983-06-08 Evans Jacob Donald Fault detection in n-phase system

Also Published As

Publication number Publication date
AU1144576A (en) 1977-09-01
JPS5512815B2 (en) 1980-04-04
GB1531933A (en) 1978-11-15
AU501986B2 (en) 1979-07-12
JPS51114650A (en) 1976-10-08
CA1065960A (en) 1979-11-06
ZA761086B (en) 1977-02-23

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