EP0320929A3 - Device for releasing the contacts of differential switches - Google Patents
Device for releasing the contacts of differential switches Download PDFInfo
- 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- Withdrawn
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
- 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.
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)
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)
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 |
-
1987
- 1987-12-17 IT IT23069/87A patent/IT1223520B/en active
-
1988
- 1988-12-15 EP EP88120979A patent/EP0320929A3/en not_active Withdrawn
Patent Citations (3)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19901215 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ABB ELETTROCONDUTTURE S.P.A. |
|
17Q | First examination report despatched |
Effective date: 19930408 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19930819 |