GB1490262A - Circuit interrupter with magnetic induction drive opening means - Google Patents
Circuit interrupter with magnetic induction drive opening meansInfo
- Publication number
- GB1490262A GB1490262A GB1274/75A GB127475A GB1490262A GB 1490262 A GB1490262 A GB 1490262A GB 1274/75 A GB1274/75 A GB 1274/75A GB 127475 A GB127475 A GB 127475A GB 1490262 A GB1490262 A GB 1490262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- keeper
- contacts
- holding
- slot
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
- H01H77/08—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening retained closed by permanent or remanent magnetism and opened by windings acting in opposition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
Abstract
1490262 Electrodynamic protective switches WESTINGHOUSE ELECTRIC CORP 13 Jan 1975 [29 Jan 1974] 1274/75 Heading H1N A circuit interrupter has a magnetic slot motor comprising a structure of laminated magnetic material 59 having a slot 63 in which a movable contact carrier 27 can move up and down rectilinearly out of and into contact respectively with fixed contacts 33, and a magnetic holding device comprising a holding magnet 43 and a keeper 53. The arrangement is such that when the contacts are closed under normal working conditions the keeper cooperates with the magnet to hold the contacts closed against a separating force produced by the reaction between the current in the movable contact carrier and the current in the structure of laminated magnetic material, but under excess current conditions a threshold force is exceeded and the holding force between the magnet and the keeper is overcome and the contact carrier moves in the slot to open the contacts. A nylon pad 69 is used in the slot to buffer the movable contact carrier. The contacts are reclosed by insertion of a tool through an aperture 57 in the housing of the circuit interrupter to depress the keeper 53 into contact with the holding magnet 43 again. In a further embodiment, Fig. 4, not shown, there is an additional contact opening arrangement responsive to lower fault currents wherein the flux of the holding magnet is opposed by flux generated, when such fault currents flow, in a coil associated with the magnet to weaken the field of the holding magnet and allow the keeper to be moved away from it under the influence of a bias spring which also then opens the contacts. The coil associated with the magnet is excited under the control of a bimetallic strip, or manually. Alternatively the keeper can be released from the holding magnet by shunting some of the field of the magnet by a manually operated magnetic shunt. In this embodiment a further movable keeper is interposed between the first keeper and the holding magnet to enable the magnetic holding device to be reset before reclosure of the contacts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43758674A | 1974-01-29 | 1974-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1490262A true GB1490262A (en) | 1977-10-26 |
Family
ID=23737052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1274/75A Expired GB1490262A (en) | 1974-01-29 | 1975-01-13 | Circuit interrupter with magnetic induction drive opening means |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5423102B2 (en) |
| AR (1) | AR204735A1 (en) |
| AU (1) | AU500869B2 (en) |
| BE (1) | BE824674A (en) |
| BR (1) | BR7500385A (en) |
| CA (1) | CA1029781A (en) |
| CH (1) | CH591159A5 (en) |
| DE (2) | DE7501208U (en) |
| ES (1) | ES434156A1 (en) |
| FR (1) | FR2259430B1 (en) |
| GB (1) | GB1490262A (en) |
| IN (1) | IN143218B (en) |
| IT (1) | IT1029031B (en) |
| PH (1) | PH11864A (en) |
| PL (1) | PL106335B1 (en) |
| ZA (1) | ZA75130B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084579A1 (en) * | 2000-04-27 | 2001-11-08 | Moeller Gmbh | Magnetic release for opening a contact system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2559308B1 (en) * | 1984-02-03 | 1986-10-17 | Telemecanique Electrique | CONTACT EQUIPPED WITH A MAGNETIC COMPENSATOR WITH ADJUSTABLE RELEASE THRESHOLD AND CIRCUIT-BREAKER USING SUCH A CONTACT |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1065508B (en) * | 1959-09-17 | |||
| DD36847A (en) * | ||||
| DE1286184B (en) * | 1962-07-13 | 1969-01-02 | Licentia Gmbh | Electrical switch, in particular automatic switch |
| NL6810433A (en) * | 1967-07-24 | 1969-01-28 | ||
| NL158644B (en) * | 1969-03-25 | 1978-11-15 | Hazemeijer Bv | ELECTRIC SWITCH WITH ELECTRODYNAMIC INCREASE IN CONTACT PRESSURE AND SWITCH-OFF SPEED. |
| FR2185853B1 (en) * | 1972-05-26 | 1977-12-30 | Merlin Gerin |
-
1975
- 1975-01-01 AR AR257461A patent/AR204735A1/en active
- 1975-01-07 ZA ZA00750130A patent/ZA75130B/en unknown
- 1975-01-10 PH PH16700A patent/PH11864A/en unknown
- 1975-01-13 GB GB1274/75A patent/GB1490262A/en not_active Expired
- 1975-01-13 IN IN74/CAL/1975A patent/IN143218B/en unknown
- 1975-01-17 DE DE7501208U patent/DE7501208U/en not_active Expired
- 1975-01-17 CA CA218,114A patent/CA1029781A/en not_active Expired
- 1975-01-17 DE DE19752501717 patent/DE2501717A1/en active Granted
- 1975-01-21 BR BR385/75D patent/BR7500385A/en unknown
- 1975-01-22 IT IT41512/75A patent/IT1029031B/en active
- 1975-01-23 AU AU77572/75A patent/AU500869B2/en not_active Expired
- 1975-01-23 FR FR7502104A patent/FR2259430B1/fr not_active Expired
- 1975-01-23 BE BE1006417A patent/BE824674A/en not_active IP Right Cessation
- 1975-01-25 ES ES434156A patent/ES434156A1/en not_active Expired
- 1975-01-28 PL PL1975177640A patent/PL106335B1/en unknown
- 1975-01-28 CH CH99175A patent/CH591159A5/xx not_active IP Right Cessation
- 1975-01-29 JP JP1147175A patent/JPS5423102B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084579A1 (en) * | 2000-04-27 | 2001-11-08 | Moeller Gmbh | Magnetic release for opening a contact system |
Also Published As
| Publication number | Publication date |
|---|---|
| CH591159A5 (en) | 1977-09-15 |
| AU7757275A (en) | 1976-07-29 |
| BR7500385A (en) | 1975-11-04 |
| ZA75130B (en) | 1976-08-25 |
| DE7501208U (en) | 1975-05-22 |
| DE2501717C2 (en) | 1987-11-05 |
| BE824674A (en) | 1975-07-23 |
| AU500869B2 (en) | 1979-06-07 |
| CA1029781A (en) | 1978-04-18 |
| FR2259430A1 (en) | 1975-08-22 |
| FR2259430B1 (en) | 1981-04-30 |
| PL106335B1 (en) | 1979-12-31 |
| ES434156A1 (en) | 1976-12-16 |
| IN143218B (en) | 1977-10-15 |
| JPS5423102B2 (en) | 1979-08-11 |
| IT1029031B (en) | 1979-03-10 |
| PH11864A (en) | 1978-08-03 |
| AR204735A1 (en) | 1976-02-27 |
| DE2501717A1 (en) | 1975-07-31 |
| JPS50108577A (en) | 1975-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19950112 |