GB828865A - Electric circuits for preventing or minimizing arcing at circuit-breaker or switch contacts - Google Patents
Electric circuits for preventing or minimizing arcing at circuit-breaker or switch contactsInfo
- Publication number
- GB828865A GB828865A GB1150457A GB1150457A GB828865A GB 828865 A GB828865 A GB 828865A GB 1150457 A GB1150457 A GB 1150457A GB 1150457 A GB1150457 A GB 1150457A GB 828865 A GB828865 A GB 828865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- preventing
- contacts
- switch contacts
- arcing
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
Landscapes
- Breakers (AREA)
Abstract
828,865. Arcing preventing in switches. VANG, A. April 9, 1957, No. 11504/57. Class 38 (5). An arrangement for preventing or minimizing arcing at switch contacts 13, 19 when a load circuit is opened, comprises a condenser 14, means for charging the condenser and means for discharging the condenser across the switch contacts in opposition to the load current when the contacts are opened. The means for discharging the condenser comprise a transductor or (as shown) a gas-filled triode 18 which is normally non-conducting due to the negative bias applied to the control grid 28 from a bias source 30. The switch blade 13 has an extension 20 which remains in contact with an auxiliary contact 21 when the contacts 13, 19 initially open so that a pulse is applied to the primary winding 22 of a transformer 23 and induces a pulse in its secondary winding 27. This renders the control grid 28 sufficiently positive for the triode to fire and permit the condenser to discharge. The arrangement shown is for D.C. circuits but Fig. 2 (not shown) illustrates a similar arrangement having two oppositely-polarized condensers and two triodes for application to A.C. circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1150457A GB828865A (en) | 1957-04-09 | 1957-04-09 | Electric circuits for preventing or minimizing arcing at circuit-breaker or switch contacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1150457A GB828865A (en) | 1957-04-09 | 1957-04-09 | Electric circuits for preventing or minimizing arcing at circuit-breaker or switch contacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB828865A true GB828865A (en) | 1960-02-24 |
Family
ID=9987467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1150457A Expired GB828865A (en) | 1957-04-09 | 1957-04-09 | Electric circuits for preventing or minimizing arcing at circuit-breaker or switch contacts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB828865A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4938113A (en) * | 1988-12-29 | 1990-07-03 | Westinghouse Electric Corp. | Electromagnetic projectile launcher with reduced muzzle arcing and associated method |
| WO1998045864A1 (en) * | 1997-04-08 | 1998-10-15 | Globlex Tech. Inc. | Arc extinction method and switch based on the method |
| WO1999023735A1 (en) * | 1997-11-05 | 1999-05-14 | Kim, Andrew | Method and apparatus for using an arc-dipole in an opening switch to generate a power pulse |
| EP0991093A1 (en) * | 1998-10-01 | 2000-04-05 | Schneider Electric Industries SA | Method and device to interrupt electrical current |
-
1957
- 1957-04-09 GB GB1150457A patent/GB828865A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4938113A (en) * | 1988-12-29 | 1990-07-03 | Westinghouse Electric Corp. | Electromagnetic projectile launcher with reduced muzzle arcing and associated method |
| WO1998045864A1 (en) * | 1997-04-08 | 1998-10-15 | Globlex Tech. Inc. | Arc extinction method and switch based on the method |
| WO1999023735A1 (en) * | 1997-11-05 | 1999-05-14 | Kim, Andrew | Method and apparatus for using an arc-dipole in an opening switch to generate a power pulse |
| EP0991093A1 (en) * | 1998-10-01 | 2000-04-05 | Schneider Electric Industries SA | Method and device to interrupt electrical current |
| FR2784223A1 (en) * | 1998-10-01 | 2000-04-07 | Schneider Electric Sa | METHOD AND DEVICE FOR CUTTING ELECTRIC CURRENT |
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