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DK0755108T3 - Fault current protection circuits in three-phase systems - Google Patents

Fault current protection circuits in three-phase systems

Info

Publication number
DK0755108T3
DK0755108T3 DK95111531T DK95111531T DK0755108T3 DK 0755108 T3 DK0755108 T3 DK 0755108T3 DK 95111531 T DK95111531 T DK 95111531T DK 95111531 T DK95111531 T DK 95111531T DK 0755108 T3 DK0755108 T3 DK 0755108T3
Authority
DK
Denmark
Prior art keywords
switch
current
fault current
current protection
protection
Prior art date
Application number
DK95111531T
Other languages
Danish (da)
Inventor
Reinhard Dipl-Ing Fh Solleder
Reinhard Dipl-Ing Schmid
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of DK0755108T3 publication Critical patent/DK0755108T3/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
    • H02H3/332—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

The protection circuit uses all-current responsive fault protection switches, or differential current protection switches, cooperating with an all-current responsive fault current detection system, with a release device, a switch lock (5), switch contacts (4) and switch chambers for each monitored current conductor. The all-current responsive fault current protection switch is inserted in the neutral path without switch contacts and a switch chamber. The DC switching load is protected by a DC fault current protection switch.
DK95111531T 1995-07-21 1995-07-21 Fault current protection circuits in three-phase systems DK0755108T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95111531A EP0755108B1 (en) 1995-07-21 1995-07-21 Earth leakage protective circuit in three-phase systems

Publications (1)

Publication Number Publication Date
DK0755108T3 true DK0755108T3 (en) 1999-11-29

Family

ID=8219456

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95111531T DK0755108T3 (en) 1995-07-21 1995-07-21 Fault current protection circuits in three-phase systems

Country Status (5)

Country Link
EP (1) EP0755108B1 (en)
AT (1) ATE180113T1 (en)
DE (1) DE59505919D1 (en)
DK (1) DK0755108T3 (en)
ES (1) ES2134380T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT507202B1 (en) 2008-12-02 2010-03-15 Moeller Gebaeudeautomation Gmb FAULT CIRCUIT BREAKER
US8344724B2 (en) 2009-11-06 2013-01-01 Massachusetts Institute Of Technology Non-intrusive monitoring of power and other parameters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445917A1 (en) * 1974-09-26 1976-04-15 Berliner Verkehrs Betriebe Bvg Arrangement of two fault current protective switches - for protection of AC operated devices against shock hazard voltage uses summing transformer

Also Published As

Publication number Publication date
EP0755108B1 (en) 1999-05-12
DE59505919D1 (en) 1999-06-17
ATE180113T1 (en) 1999-05-15
ES2134380T3 (en) 1999-10-01
EP0755108A1 (en) 1997-01-22

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