ZA83477B - Earth leakage circuit breater which responds to fault currents with direct current components - Google Patents

Earth leakage circuit breater which responds to fault currents with direct current components

Info

Publication number
ZA83477B
ZA83477B ZA83477A ZA83477A ZA83477B ZA 83477 B ZA83477 B ZA 83477B ZA 83477 A ZA83477 A ZA 83477A ZA 83477 A ZA83477 A ZA 83477A ZA 83477 B ZA83477 B ZA 83477B
Authority
ZA
South Africa
Prior art keywords
induction
delta
release
winding
direct
Prior art date
Application number
ZA83477A
Inventor
Helmut Roesch
Reinhard Solleder
Karl-Heinz Stich
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
Publication of ZA83477B publication Critical patent/ZA83477B/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)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Control Of Eletrric Generators (AREA)
  • Breakers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Protection Of Transformers (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

1. An earth leakage circuit breaker which responds to fault currents with direct current components, - whose magnetic core (13) of the summation current transformer (2) has an induction stroke which is sufficiently great for a pulsing d.c. fault current flowing in its primary winding (3) to induce in the secondary winding (4) a voltage necessary for actuating the magnetic release device (6) by means of its release winding (5), - which has a capacitor (9) connected between the secondary winding (4) and the release winding (5), - wherein the oscillation circuit thus formed can be set to the frequency of the voltage which is induced in the secondary winding (4) by a pulsing d.c. fault current flowing in the primary winding (3) of the summation current transformer (2), - and wherein the magnetic core (13) has a dynamic differential induction, delta Bdym, between the maximum induction Bmax, and the dynamic residual induction, Brdyn, of see diagramm : EP0084814,P4,F1 and in that - the ratio of the static differential induction, delta Bstat, between the maximum induction Bmax, and the static residual induction, Brstat, to the dynamic differential induction, delta Bdyn, satisfies the equation : see diagramm : EP0084814,P4,F2 characterised in that in an earth leakage circuit breaker - for a nominal fault current of 300 or 500 mA leading to release, the amplitude of the magnetic field strength with alternating current is approximately ^H apprch= 0,03 A/cm and the associated magnetic induction lies approximately at ^B >= 0,5 T, and that - for a nominal fault current leading to release that is smaller than or equal to 10 mA, the ratio of the static differential induction with direct current superimposition, delta Bstat with-direct, to the static differential induction without direct current superimposition, delta Bstat-without-direct, does not fall below a value of 0.85 according to the equation see diagramm : EP0084814,P4,F3
ZA83477A 1982-01-26 1983-01-25 Earth leakage circuit breater which responds to fault currents with direct current components ZA83477B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823202320 DE3202320A1 (en) 1982-01-26 1982-01-26 Fault current protection switch that responds to fault currents with direct current components

Publications (1)

Publication Number Publication Date
ZA83477B true ZA83477B (en) 1983-10-26

Family

ID=6153886

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA83477A ZA83477B (en) 1982-01-26 1983-01-25 Earth leakage circuit breater which responds to fault currents with direct current components

Country Status (7)

Country Link
EP (1) EP0084814B1 (en)
JP (1) JPS58130722A (en)
AT (1) ATE12861T1 (en)
DE (1) DE3202320A1 (en)
DK (1) DK161284C (en)
ES (1) ES8402981A2 (en)
ZA (1) ZA83477B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0575639B1 (en) * 1992-06-16 1996-09-04 Siemens Aktiengesellschaft Ground fault circuit interrupter
DE4429007A1 (en) * 1994-08-16 1996-02-22 Siemens Ag Residual current circuit breaker with energy storage circuit
EP1154539A1 (en) * 2000-05-10 2001-11-14 Siemens Aktiengesellschaft Fault current breaker with summation transformer
CN103078291B (en) * 2012-12-27 2015-07-01 江苏创能电器有限公司 Intelligent residual current leakage sudden-change protection method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH532855A (en) * 1970-07-23 1973-01-15 Siemens Ag Residual current circuit breaker
DE2044302B2 (en) * 1970-09-08 1975-01-23 Siemens Ag, 1000 Berlin Und 8000 Muenchen Residual current circuit breaker
DE2062694B2 (en) * 1970-09-08 1975-05-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Residual current circuit breaker
DE3028595A1 (en) * 1980-07-28 1982-02-25 Siemens AG, 1000 Berlin und 8000 München Fault current protection switch that responds to fault currents with direct current components

Also Published As

Publication number Publication date
DE3202320A1 (en) 1983-07-28
EP0084814B1 (en) 1985-04-17
JPS58130722A (en) 1983-08-04
ES8402981A2 (en) 1984-05-01
DK161284C (en) 1991-12-09
ATE12861T1 (en) 1985-05-15
DK26783D0 (en) 1983-01-25
ES519278A0 (en) 1984-02-16
JPH0353844B2 (en) 1991-08-16
DK161284B (en) 1991-06-17
EP0084814A1 (en) 1983-08-03
DE3202320C2 (en) 1990-07-05
DK26783A (en) 1983-07-27

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