FI800939A - SKYDDSSTROEMSTAELLARE FOER LAECKSTROEM SOM REAGERAR AEVEN FOER LIKSTROEM - Google Patents

SKYDDSSTROEMSTAELLARE FOER LAECKSTROEM SOM REAGERAR AEVEN FOER LIKSTROEM

Info

Publication number
FI800939A
FI800939A FI800939A FI800939A FI800939A FI 800939 A FI800939 A FI 800939A FI 800939 A FI800939 A FI 800939A FI 800939 A FI800939 A FI 800939A FI 800939 A FI800939 A FI 800939A
Authority
FI
Finland
Prior art keywords
foer
excitation
tripping device
magnetic
skyddsstroemstaellare
Prior art date
Application number
FI800939A
Other languages
Finnish (fi)
Other versions
FI68934B (en
FI68934C (en
Inventor
Shouichi Yamaki
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of FI800939A publication Critical patent/FI800939A/en
Publication of FI68934B publication Critical patent/FI68934B/en
Application granted granted Critical
Publication of FI68934C publication Critical patent/FI68934C/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

Abstract

1. Fault current safety switch for disconnecting users even in the case of direct current fault currents, which operates with a tripping device, a switch lock and a summation current transformer (1) which comprises a first secondary winding (3) connected to an oscillator (9) and comprises a second secondary winding (4) connected to an excitation winding of a magnetic tripping device, characterised in - that the magnetic tripping device (10) has two excitation windings (16, 17), a first (16) and a second (17), on arms of its yoke (12), - that the first excitation winding (16) is connected to the oscillator (9), the second excitation winding (17) being connected to the second secondary winding (4), and - that the two excitation windings (16, 17) are tuned to one another in such manner that on operation of the oscillator (9), the magnetic fluxes produced by said excitation windings in the magnetic circuit of the magnetic tripping device (10) in the fault current free state, are unidirectional and opposite in relation to one another.
FI800939A 1979-03-26 1980-03-26 FELSSTROEMSSKYDDSKOPLARE SOM REAGERAR AEVEN FOER LIKSTROEMSFELTSTROEMMAR FI68934C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3527079A JPS55127826A (en) 1979-03-26 1979-03-26 Leakage breaker
JP3527079 1979-03-26

Publications (3)

Publication Number Publication Date
FI800939A true FI800939A (en) 1980-09-27
FI68934B FI68934B (en) 1985-07-31
FI68934C FI68934C (en) 1985-11-11

Family

ID=12437092

Family Applications (1)

Application Number Title Priority Date Filing Date
FI800939A FI68934C (en) 1979-03-26 1980-03-26 FELSSTROEMSSKYDDSKOPLARE SOM REAGERAR AEVEN FOER LIKSTROEMSFELTSTROEMMAR

Country Status (9)

Country Link
EP (1) EP0016458B1 (en)
JP (1) JPS55127826A (en)
AT (1) ATE2986T1 (en)
DE (1) DE3062581D1 (en)
DK (1) DK146400C (en)
ES (1) ES8103882A1 (en)
FI (1) FI68934C (en)
GR (1) GR67252B (en)
NO (1) NO152394C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509089B1 (en) * 1981-07-06 1986-04-18 Merlin Gerin HIGH SENSITIVITY DIFFERENTIAL PROTECTION DEVICE FOR THE DETECTION OF PHASE OR NEUTRAL EARTH FAULT CURRENTS
AT383906B (en) * 1985-04-16 1987-09-10 Cti Ges Zur Pruefung Elektrote Fault current protection switch for fault change and fault current
GB8913633D0 (en) * 1989-06-14 1989-08-02 Electrolux Northern Electromagnetic actuator arrangement
GB9006834D0 (en) * 1990-03-27 1990-05-23 Watson Michael Cable coupling transformer
DE19523967A1 (en) * 1995-06-30 1997-01-02 Kopp Heinrich Ag Earth current circuit-breaker for insulation monitoring of electric circuits
FI110081B (en) * 1996-02-09 2002-11-29 Metso Paper Inc Device for transporting paper rolls
DE29705030U1 (en) * 1997-03-19 1998-07-23 Siemens Ag Residual current circuit breaker for all-current
DE102010034001A1 (en) 2010-08-11 2012-02-16 Siemens Aktiengesellschaft Direct current (DC) fault current detection and deactivation arrangement for earth-leakage circuit breaker, has magnetic trigger element to open switching contact by not canceling magnetic fluxes during existence of fault current
CN105785095A (en) * 2016-04-21 2016-07-20 中车青岛四方机车车辆股份有限公司 Constant-amplitude DC pulse signal measurement circuit and degaussing method thereof
JP6697745B2 (en) * 2016-11-29 2020-05-27 パナソニックＩｐマネジメント株式会社 DC leakage detector, leakage detector
DE102017217411A1 (en) * 2017-09-29 2019-04-04 Siemens Aktiengesellschaft Residual Current Device
DE102018200714B4 (en) * 2018-01-17 2023-07-06 Siemens Aktiengesellschaft RCDs and procedures

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971476C (en) * 1953-03-07 1959-02-05 Berker Geb Electric circuit breaker with fault current release
FR1365154A (en) * 1963-08-05 1964-06-26 Baldwin & Francis Ltd Improvements to protection devices against leaks and earth faults
CH505391A (en) * 1968-12-03 1971-03-31 Weber Ag Fabrik Elektrotechn A Device for monitoring current differences in an electrical system
US3786356A (en) * 1972-06-30 1974-01-15 Federal Pacific Electric Co Ground fault detector
DE2421747A1 (en) * 1974-05-06 1975-11-20 Bbc Brown Boveri & Cie Failure monitor and protection circuit for AC supply networks - has two toroidal cores around AC lines each with input and output coils
JPS5184048A (en) * 1975-01-20 1976-07-23 Inoue Electric Mfg CHOKURYUFUIIDANOCHIRAKUKENSHUTSUSOCHI
FR2321208A1 (en) * 1975-08-11 1977-03-11 Saparel Detection of leakage current to earth - uses differential current transformer whose core is saturated by leakage current

Also Published As

Publication number Publication date
ATE2986T1 (en) 1983-04-15
DK146400C (en) 1984-03-26
EP0016458B1 (en) 1983-04-06
ES489893A0 (en) 1981-03-16
FI68934B (en) 1985-07-31
DE3062581D1 (en) 1983-05-11
FI68934C (en) 1985-11-11
DK126980A (en) 1980-09-27
NO152394B (en) 1985-06-10
NO152394C (en) 1985-09-18
JPS55127826A (en) 1980-10-03
GR67252B (en) 1981-06-25
ES8103882A1 (en) 1981-03-16
DK146400B (en) 1983-09-26
EP0016458A1 (en) 1980-10-01
NO800845L (en) 1980-09-29

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: FUJI ELECTRIC CO. LTD.