GB936142A - Improvements in and relating to contact systems for electrical switchgear - Google Patents
Improvements in and relating to contact systems for electrical switchgearInfo
- Publication number
- GB936142A GB936142A GB4202058A GB4202058A GB936142A GB 936142 A GB936142 A GB 936142A GB 4202058 A GB4202058 A GB 4202058A GB 4202058 A GB4202058 A GB 4202058A GB 936142 A GB936142 A GB 936142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fingers
- contact
- currents
- blade
- action
- 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
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
Landscapes
- Contacts (AREA)
Abstract
936,142. Oil-break switches; switch contacts. ENGLISH ELECTRIC CO. Ltd. Dec. 21, 1959 [Dec. 30, 1958], No. 42020/58. Class 38 (5). A moving blade 11 which may be that of the oil switch of Specification 936,141 has contact fingers 11a joined by springs 11c which maintain pressure between the tips 11b and a fixed contact 10a<SP>1</SP> for normal currents, the length of fingers 11a being such that the electromagnetic interaction between the currents in fingers 11a exceeds the opposing action between the currents in members 10a<SP>1</SP>, 11a, thus increasing the contact pressure during fault conditions. The separating action between members 10a<SP>1</SP>, 11a is reduced by using a plurality of contact fingers and similar action between the blade 11 and a fixed conductor 12 at the blade hinge 13 is prevented by providing the latter with a spring contact-closing force. When the blade 11 is opened a limit spacer (not shown) maintains the fingers 11a apart. The fingers may be made of different material to unbalance their currents and alter the electromagnetic force between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4202058A GB936142A (en) | 1958-12-30 | 1958-12-30 | Improvements in and relating to contact systems for electrical switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4202058A GB936142A (en) | 1958-12-30 | 1958-12-30 | Improvements in and relating to contact systems for electrical switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB936142A true GB936142A (en) | 1963-09-04 |
Family
ID=10422460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4202058A Expired GB936142A (en) | 1958-12-30 | 1958-12-30 | Improvements in and relating to contact systems for electrical switchgear |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB936142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2516096A (en) * | 2013-07-11 | 2015-01-14 | Johnson Electric Sa | Electrical contactor |
| GB2517137A (en) * | 2013-07-11 | 2015-02-18 | Johnson Electric Sa | Electrical contactor |
-
1958
- 1958-12-30 GB GB4202058A patent/GB936142A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2516096A (en) * | 2013-07-11 | 2015-01-14 | Johnson Electric Sa | Electrical contactor |
| GB2517137A (en) * | 2013-07-11 | 2015-02-18 | Johnson Electric Sa | Electrical contactor |
| US9136068B2 (en) | 2013-07-11 | 2015-09-15 | Johnson Electric S.A. | Electrical contactor |
| US9218919B2 (en) | 2013-07-11 | 2015-12-22 | Johnson Electric S.A. | Electrical contactor |
| GB2517137B (en) * | 2013-07-11 | 2021-04-14 | Johnson Electric Int Ag | Electrical contactor |
| GB2516096B (en) * | 2013-07-11 | 2021-04-14 | Johnson Electric Int Ag | Electrical contactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1189948A (en) | An Automatic Circuit Breaker | |
| US2098801A (en) | High voltage electric circuit interrupter | |
| GB904160A (en) | Improvements in gas-blast electric circuit interrupters | |
| GB876336A (en) | Cam-operable electric switches | |
| GB925401A (en) | High-voltage circuit-breaker | |
| GB936142A (en) | Improvements in and relating to contact systems for electrical switchgear | |
| GB1028719A (en) | Improvements in and relating to electric switchgear | |
| GB1522570A (en) | Quick-break electric switch | |
| GB940109A (en) | Electric circuit breakers | |
| GB1091643A (en) | High voltage switch construction | |
| GB1156919A (en) | Improvements in and relating to Circuit Breakers | |
| GB1216977A (en) | Improvements in and relating to electric circuit breakers | |
| GB1227729A (en) | ||
| GB1496732A (en) | Short-circuit current limiter | |
| US3674959A (en) | Circuit interrupter closing resistors | |
| GB847968A (en) | Improvements in or relating to electric circuit interrupters | |
| GB1231897A (en) | ||
| GB974156A (en) | Electric disconnecting switch | |
| GB1084543A (en) | Improvements in and relating to electric switchgear | |
| GB848184A (en) | Improvements in or relating to electric circuit interrupters | |
| US3184573A (en) | Laminated electrical contact assembly | |
| CN110060904B (en) | Novel isolating switch contact structure | |
| US3492452A (en) | Protective switching devices for capacitors,with movable contacts within arcing electrodes and exhaust valve means | |
| GB889621A (en) | A load-break disconnecting switch | |
| GB882691A (en) | Improvements relating to electric circuit-breakers |