GB1321381A - Protective circuit assemblies including explosively operated electrical switches - Google Patents
Protective circuit assemblies including explosively operated electrical switchesInfo
- Publication number
- GB1321381A GB1321381A GB1321381DA GB1321381A GB 1321381 A GB1321381 A GB 1321381A GB 1321381D A GB1321381D A GB 1321381DA GB 1321381 A GB1321381 A GB 1321381A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- slug
- protective circuit
- polepieces
- cover
- 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
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/004—Closing switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
Abstract
1321381 Actuation of switches; switch contacts; switch indicators POST OFFICE 2 Dec 1971 [20 Jan 1971] 2750/71 Heading H1N [Also in Division H2] A protective circuit assembly (see Division H2) includes an explosion-operated switch comprising a body 1 of epoxide paper-based material and an electrically-fired detonator 6 which drives a slug 7, normally retained by a lead wire 9, along a groove 5 into a tapered gap 10 between copper polepieces 3 to provide a short-circuit therebetween. The slug 7 and ends of the pieces 3 are preferably silver plated. Expansion chambers 11 relieve pressure in the switch, which is closed by a cover (2, Figs. 1 and 4, not shown) screwed to body 1 and sealed by epoxy resin. A sealed window (14, Fig. 4, not shown) in cover (2) in the vicinity of the gap 10 indicates switch operation by becoming opaque. A desicator 16 removes excess moisture. Should the shortcircuit current melt slug 7, a small well 19 ensures that a circuit is maintained for at least 50 ms. between the ends of polepieces 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB275071 | 1971-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1321381A true GB1321381A (en) | 1973-06-27 |
Family
ID=9745192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1321381D Expired GB1321381A (en) | 1971-01-20 | 1971-01-20 | Protective circuit assemblies including explosively operated electrical switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1321381A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153609A (en) * | 1984-02-02 | 1985-08-21 | Lucas Elect Electron Syst | Surge suppressor |
| WO1997041582A1 (en) * | 1996-04-27 | 1997-11-06 | Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik | Pyrotechnic switching element for electric circuits |
| DE19712387B4 (en) * | 1996-04-27 | 2005-12-08 | Delphi Technologies, Inc., Troy | Pyrotechnic switching element for electrical circuits |
| WO2007095873A1 (en) * | 2006-02-23 | 2007-08-30 | Siemens Aktiengesellschaft | Device for short-circuiting power semiconductor modules |
| CN117747337A (en) * | 2024-02-21 | 2024-03-22 | 山西王家岭煤业有限公司 | Mine tunnel high-voltage explosion-proof circuit breaker |
-
1971
- 1971-01-20 GB GB1321381D patent/GB1321381A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153609A (en) * | 1984-02-02 | 1985-08-21 | Lucas Elect Electron Syst | Surge suppressor |
| WO1997041582A1 (en) * | 1996-04-27 | 1997-11-06 | Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik | Pyrotechnic switching element for electric circuits |
| DE19712387B4 (en) * | 1996-04-27 | 2005-12-08 | Delphi Technologies, Inc., Troy | Pyrotechnic switching element for electrical circuits |
| WO2007095873A1 (en) * | 2006-02-23 | 2007-08-30 | Siemens Aktiengesellschaft | Device for short-circuiting power semiconductor modules |
| US8164868B2 (en) | 2006-02-23 | 2012-04-24 | Siemens Aktiengesellschaft | Device for short-circuiting power semiconductor modules |
| CN117747337A (en) * | 2024-02-21 | 2024-03-22 | 山西王家岭煤业有限公司 | Mine tunnel high-voltage explosion-proof circuit breaker |
| CN117747337B (en) * | 2024-02-21 | 2024-04-12 | 山西王家岭煤业有限公司 | Mine tunnel high-voltage explosion-proof circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |