EP0548732A3 - - Google Patents

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Publication number
EP0548732A3
EP0548732A3 EP19920121254 EP92121254A EP0548732A3 EP 0548732 A3 EP0548732 A3 EP 0548732A3 EP 19920121254 EP19920121254 EP 19920121254 EP 92121254 A EP92121254 A EP 92121254A EP 0548732 A3 EP0548732 A3 EP 0548732A3
Authority
EP
European Patent Office
Prior art keywords
supply
signal
return
conductor
trip device
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP19920121254
Other versions
EP0548732B1 (en
EP0548732A2 (en
Inventor
Erhard Runtsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0548732A2 publication Critical patent/EP0548732A2/en
Publication of EP0548732A3 publication Critical patent/EP0548732A3/xx
Application granted granted Critical
Publication of EP0548732B1 publication Critical patent/EP0548732B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/127—Automatic release mechanisms with or without manual release using piezoelectric, electrostrictive or magnetostrictive trip units
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H57/00—Electrostrictive relays; Piezo-electric relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Abstract

A residual current device having at least one supply conductor and one return conductor which form the primary windings for a summing current transformer, its secondary winding emitting a signal if a fault current occurs in the supply and return conductors, which signal drives a trip device which unlatches the latching point of a latching mechanism, as a result of which contact points which are located in the supply and return conductors are opened, the trip device having an element consisting of electrostrictive material whose one end is held in a fixed position in the switch and whose other end, which deflects in the case of a signal, acts on the latching point. <IMAGE>
EP92121254A 1991-12-24 1992-12-14 Earth leakage circuit breaker Expired - Lifetime EP0548732B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142969A DE4142969A1 (en) 1991-12-24 1991-12-24 Fault current protection switch
DE4142969 1991-12-24

Publications (3)

Publication Number Publication Date
EP0548732A2 EP0548732A2 (en) 1993-06-30
EP0548732A3 true EP0548732A3 (en) 1994-01-26
EP0548732B1 EP0548732B1 (en) 1996-05-01

Family

ID=6448134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121254A Expired - Lifetime EP0548732B1 (en) 1991-12-24 1992-12-14 Earth leakage circuit breaker

Country Status (3)

Country Link
EP (1) EP0548732B1 (en)
AT (1) ATE137604T1 (en)
DE (2) DE4142969A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443520A1 (en) * 1994-12-07 1996-06-13 Abb Patent Gmbh Fault-current circuit breaker
US5936536A (en) * 1997-04-08 1999-08-10 Medicor Corporation Electrical insulation testing device and method for electrosurgical instruments
DE19739822A1 (en) * 1997-09-11 1999-03-18 Abb Patent Gmbh Residual current circuit breaker
IT1303664B1 (en) * 1998-12-24 2001-02-21 Abb Ricerca Spa ELECTRONIC PILOTING CIRCUIT FOR BISTABLE ACTUATOR ACTIVATED BY PIEZOELECTRIC, PARTICULARLY FOR DEVICES
WO2002050856A1 (en) * 2000-12-19 2002-06-27 Siemens Aktiengesellschaft Trip for circuit breaker
DE10112563A1 (en) * 2001-03-15 2002-09-19 Kopp Heinrich Ag Device for actuating a trigger mechanism
DE10340003B4 (en) * 2003-08-29 2006-02-16 Siemens Ag Short-circuit and overload release for a switching device
DE102006018669A1 (en) * 2006-04-21 2007-07-05 Siemens Ag Electromechanical switching device for connecting two electrical contact points, has mobile contact element, which is adjustable by piezo-element between two switching positions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042967A (en) * 1975-10-28 1977-08-16 Yujiro Yamamoto Ground fault sensor
EP0285594A1 (en) * 1987-04-02 1988-10-05 Felten & Guilleaume Austria Ag Fault current interruptor with short time delay
EP0412401A2 (en) * 1989-08-10 1991-02-13 Siemens Aktiengesellschaft High-speed circuit breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835761A (en) * 1953-05-25 1958-05-20 Electric Machinery Mfg Co Electrostrictive ceramic actuator
DE1463583A1 (en) * 1964-03-17 1969-03-27 Siemens Ag Arrangement for controlling or defining the response and release times of piezoelectric relays
SU1513561A1 (en) * 1986-05-23 1989-10-07 Всесоюзный научно-исследовательский институт электрификации сельского хозяйства Arrangement for protection from damage in three-phase electric installation
SU1686575A1 (en) * 1989-07-14 1991-10-23 Душанбинское Проектно-Конструкторское Технологическое Бюро "Системавтоматика" Device for protective switching-off of a c network in case of current leak to ground
JPH06248220A (en) * 1993-02-23 1994-09-06 San Chitsupu:Kk Nontoxic solid drawing material composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042967A (en) * 1975-10-28 1977-08-16 Yujiro Yamamoto Ground fault sensor
EP0285594A1 (en) * 1987-04-02 1988-10-05 Felten & Guilleaume Austria Ag Fault current interruptor with short time delay
EP0412401A2 (en) * 1989-08-10 1991-02-13 Siemens Aktiengesellschaft High-speed circuit breaker

Also Published As

Publication number Publication date
DE59206179D1 (en) 1996-06-05
EP0548732B1 (en) 1996-05-01
DE4142969A1 (en) 1993-07-01
ATE137604T1 (en) 1996-05-15
EP0548732A2 (en) 1993-06-30

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