IT1088165B - SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE - Google Patents

SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE

Info

Publication number
IT1088165B
IT1088165B IT2917377A IT2917377A IT1088165B IT 1088165 B IT1088165 B IT 1088165B IT 2917377 A IT2917377 A IT 2917377A IT 2917377 A IT2917377 A IT 2917377A IT 1088165 B IT1088165 B IT 1088165B
Authority
IT
Italy
Prior art keywords
release
safety device
electrical systems
differential transformer
transformer type
Prior art date
Application number
IT2917377A
Other languages
Italian (it)
Inventor
Giorgio Giardini
Original Assignee
Elettrocondutture
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 Elettrocondutture filed Critical Elettrocondutture
Priority to IT2917377A priority Critical patent/IT1088165B/en
Priority to DE19782845993 priority patent/DE2845993A1/en
Priority to GB7842549A priority patent/GB2012127B/en
Application granted granted Critical
Publication of IT1088165B publication Critical patent/IT1088165B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • 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
    • H02H3/332—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 with means responsive to dc component in the fault current
    • 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
    • H02H3/334—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 with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H02H3/335—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 with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
    • 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
    • H02H3/338—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 also responsive to wiring error, e.g. loss of neutral, break

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Relating To Insulation (AREA)
  • Emergency Protection Circuit Devices (AREA)
IT2917377A 1977-10-31 1977-10-31 SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE IT1088165B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT2917377A IT1088165B (en) 1977-10-31 1977-10-31 SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE
DE19782845993 DE2845993A1 (en) 1977-10-31 1978-10-23 FAULT CIRCUIT ARRANGEMENT
GB7842549A GB2012127B (en) 1977-10-31 1978-10-31 Fault-current circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2917377A IT1088165B (en) 1977-10-31 1977-10-31 SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE

Publications (1)

Publication Number Publication Date
IT1088165B true IT1088165B (en) 1985-06-10

Family

ID=11226484

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2917377A IT1088165B (en) 1977-10-31 1977-10-31 SAFETY DEVICE FOR ELECTRICAL SYSTEMS, OF THE DIFFERENTIAL TRANSFORMER TYPE WITH RELEASE

Country Status (3)

Country Link
DE (1) DE2845993A1 (en)
GB (1) GB2012127B (en)
IT (1) IT1088165B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938971A1 (en) * 1979-09-26 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Fault current protection switch with pre-magnetized core
DE3007227A1 (en) * 1980-02-27 1981-10-22 Schupa Elektro-GmbH + Co KG, 5885 Schalksmühle HIGH-SENSITIVE, ALL-CURRENT-SENSITIVE FAULT CURRENT SWITCH
DE3106960A1 (en) * 1981-02-25 1982-09-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Residual current device
DE3230557A1 (en) 1982-08-17 1984-02-23 Siemens AG, 1000 Berlin und 8000 München Fault current protection switch
DE3429381A1 (en) * 1984-08-09 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Differential-current protection circuit breaker
IT1185437B (en) * 1985-10-15 1987-11-12 Elettrocondutture STATIC AMPLIFIER WITH WEAK SIGNALS WITHOUT AUXILIARY POWER SUPPLY
GB9908930D0 (en) * 1999-04-19 1999-06-16 Pbt Limited Active material low power electrical switching mechanism
EP1150412A1 (en) 2000-04-25 2001-10-31 Siemens Aktiengesellschaft Earth fault circuit breaker and method for testing the proper operation of an earth fault circuit breaker

Also Published As

Publication number Publication date
GB2012127A (en) 1979-07-18
DE2845993A1 (en) 1979-05-10
GB2012127B (en) 1982-03-24

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