ATE264544T1 - RESIDUAL POWER DEVICE - Google Patents

RESIDUAL POWER DEVICE

Info

Publication number
ATE264544T1
ATE264544T1 AT99204083T AT99204083T ATE264544T1 AT E264544 T1 ATE264544 T1 AT E264544T1 AT 99204083 T AT99204083 T AT 99204083T AT 99204083 T AT99204083 T AT 99204083T AT E264544 T1 ATE264544 T1 AT E264544T1
Authority
AT
Austria
Prior art keywords
equilibrium position
stable equilibrium
metallic element
detection
operatively connected
Prior art date
Application number
AT99204083T
Other languages
German (de)
Inventor
Pietro Mandurino
Aldo Sciacca
Donato Colonna
Silvia Volponi
Giuseppe Bertolotto Bianc
Original Assignee
Abb Service Srl
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 Service Srl filed Critical Abb Service Srl
Application granted granted Critical
Publication of ATE264544T1 publication Critical patent/ATE264544T1/en

Links

Classifications

    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • 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

Landscapes

  • Breakers (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Amplifiers (AREA)
  • Processing Of Terminals (AREA)

Abstract

A residual current device comprising an actuator which is operatively connected to kinematic elements for opening contacts following the detection, by a sensor, of an earth fault current. The actuator comprises a bistable metallic element which is operatively connected to the kinematic elements and to which at least one piezoelectric element is coupled, the piezoelectric element being excited by an electrical signal as a consequence of the detection of the fault current and inducing a movement of the bistable metallic element from a first stable equilibrium position to a second stable equilibrium position. The device further comprises reset elements which are suitable to return the bistable metallic element into the first stable equilibrium position before the contacts close again. <IMAGE>
AT99204083T 1998-12-24 1999-12-02 RESIDUAL POWER DEVICE ATE264544T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1998MI002830A IT1303666B1 (en) 1998-12-24 1998-12-24 DIFFERENTIAL DEVICE WITH IMPROVED FUNCTIONAL FEATURES

Publications (1)

Publication Number Publication Date
ATE264544T1 true ATE264544T1 (en) 2004-04-15

Family

ID=11381352

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99204083T ATE264544T1 (en) 1998-12-24 1999-12-02 RESIDUAL POWER DEVICE

Country Status (5)

Country Link
EP (1) EP1014416B1 (en)
CN (1) CN1192411C (en)
AT (1) ATE264544T1 (en)
DE (1) DE69916410T2 (en)
IT (1) IT1303666B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2714307C2 (en) * 2015-06-03 2020-02-14 Конинклейке Филипс Н.В. Actuating device
DE102015215035A1 (en) * 2015-08-06 2017-02-09 Bayerische Motoren Werke Aktiengesellschaft Device for protecting an electrical load of a vehicle electrical system against a fault current
CN105571803B (en) * 2016-03-13 2017-11-24 北京工业大学 A kind of bistable state piezoelectric energy collector vibration experiment fixture
CN113241291B (en) * 2021-05-08 2022-08-30 安徽工业大学 Bistable air switch with self-resetting function and self-resetting method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383195A (en) * 1980-10-24 1983-05-10 Piezo Electric Products, Inc. Piezoelectric snap actuator
DE3833158A1 (en) * 1988-09-29 1990-04-12 Siemens Ag Bistable bending (flexural) transducer
DE4142970A1 (en) * 1991-12-24 1993-07-01 Abb Patent Gmbh Fault current and / or differential current circuit breaker

Also Published As

Publication number Publication date
EP1014416B1 (en) 2004-04-14
EP1014416A3 (en) 2001-12-12
EP1014416A2 (en) 2000-06-28
DE69916410D1 (en) 2004-05-19
CN1258124A (en) 2000-06-28
CN1192411C (en) 2005-03-09
ITMI982830A1 (en) 2000-06-24
DE69916410T2 (en) 2005-05-04
IT1303666B1 (en) 2001-02-21

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Legal Events

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