EP0320929A3 - Device for releasing the contacts of differential switches - Google Patents

Device for releasing the contacts of differential switches Download PDF

Info

Publication number
EP0320929A3
EP0320929A3 EP88120979A EP88120979A EP0320929A3 EP 0320929 A3 EP0320929 A3 EP 0320929A3 EP 88120979 A EP88120979 A EP 88120979A EP 88120979 A EP88120979 A EP 88120979A EP 0320929 A3 EP0320929 A3 EP 0320929A3
Authority
EP
European Patent Office
Prior art keywords
lever
arm
resetting
engagement element
contrast
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.)
Withdrawn
Application number
EP88120979A
Other languages
German (de)
French (fr)
Other versions
EP0320929A2 (en
Inventor
Raffaello Monterosso
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 Elettrocondutture SpA
Original Assignee
Elettrocondutture SpA
ABB Elettrocondutture SpA
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 Elettrocondutture SpA, ABB Elettrocondutture SpA filed Critical Elettrocondutture SpA
Publication of EP0320929A2 publication Critical patent/EP0320929A2/en
Publication of EP0320929A3 publication Critical patent/EP0320929A3/en
Withdrawn legal-status Critical Current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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
    • H01H83/04—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 with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • 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
    • H01H83/04—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 with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • 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
    • H01H71/1072—Release mechanisms which are reset by opening movement of contacts

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

This device comprises:
- a first lever (7,7a,7b) having a first arm (7) actuated by the release device, and a second arm (7a) acting on an engagement element (10),
- a second lever having a first arm (11,11a) engageable with said engagement element (10) and a contrast arm (11e) acting on a biasing spring (3),
- a third lever rigidly associated with a resetting knob and having a first arm loading said spring upon each resetting and a second arm (12) in contact with the contrast arm and connected to a pusher rod (13) for actuating a release lever (14),
- a connecting rod (15) pivoted to the knob (1) and said contrast arm (11e) for keeping the second lever in position after each resetting, so that upon each actuation of the first lever (7), the second lever (11,11a,11e) is disengaged from the engagement element (10) and can rotate freely, the third lever (12,12a,12b) rotates under the thrust of the preloaded spring (3) and the connecting rod (13) moves towards the switch release lever (14), thus causing contact opening.
EP88120979A 1987-12-17 1988-12-15 Device for releasing the contacts of differential switches Withdrawn EP0320929A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2306987 1987-12-17
IT23069/87A IT1223520B (en) 1987-12-17 1987-12-17 DEVICE FOR THE RELEASE OF THE CONTACTS OF DIFFERENTIAL SWITCHES

Publications (2)

Publication Number Publication Date
EP0320929A2 EP0320929A2 (en) 1989-06-21
EP0320929A3 true EP0320929A3 (en) 1990-08-29

Family

ID=11203451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120979A Withdrawn EP0320929A3 (en) 1987-12-17 1988-12-15 Device for releasing the contacts of differential switches

Country Status (2)

Country Link
EP (1) EP0320929A3 (en)
IT (1) IT1223520B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662019B1 (en) * 1990-05-10 1992-07-24 Merlin Gerin TEST CIRCUIT FOR A DIFFERENTIAL TRIGGER.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77263E (en) * 1960-02-29 1962-02-09 Prec Mecanique Labinal Improvements made to protection devices, more specifically for three-phase installations
DE1286187B (en) * 1964-04-18 1969-01-02 Licentia Gmbh Latching mechanism for releases of self-switches
FR2500957A1 (en) * 1981-02-28 1982-09-03 Licentia Gmbh MECHANISM FOR LEAKAGE CURRENT TRIGGER COMBINED WITH A LINE PROTECTION CIRCUIT BREAKER

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77263E (en) * 1960-02-29 1962-02-09 Prec Mecanique Labinal Improvements made to protection devices, more specifically for three-phase installations
DE1286187B (en) * 1964-04-18 1969-01-02 Licentia Gmbh Latching mechanism for releases of self-switches
FR2500957A1 (en) * 1981-02-28 1982-09-03 Licentia Gmbh MECHANISM FOR LEAKAGE CURRENT TRIGGER COMBINED WITH A LINE PROTECTION CIRCUIT BREAKER

Also Published As

Publication number Publication date
IT1223520B (en) 1990-09-19
IT8723069A0 (en) 1987-12-17
EP0320929A2 (en) 1989-06-21

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Effective date: 19930819