GB1523375A - Surge arrester - Google Patents
Surge arresterInfo
- Publication number
- GB1523375A GB1523375A GB562976A GB562976A GB1523375A GB 1523375 A GB1523375 A GB 1523375A GB 562976 A GB562976 A GB 562976A GB 562976 A GB562976 A GB 562976A GB 1523375 A GB1523375 A GB 1523375A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- gaps
- electrodes
- areas
- gas
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Landscapes
- Thermistors And Varistors (AREA)
- Glass Compositions (AREA)
Abstract
1523375 Spark-gaps MITSUBISHI MINING & CEMENT CO Ltd 12 Feb 1976 [22 Feb 1975 4 July 1975] 05629/76 Heading H1D A surge diverter comprises an insulating body 1 carrying two or more areas 2 of conducting thin film separated by narrow gaps 3 of 10-100 micron, each area 2 carrying an incorrodible conducting electrode 6 and the whole being sealed with insulating covering material 5 to enclose a gas between the electrodes. The film may be made from Ag paste or solder conducting paint, or Ag, Cu, Al or C film, the metals being vacuum deposited and the carbon cracked from hydrocarbon, e.g. benzene. The electrodes 6 made from one of Cu, Zn, Ni, Al, Fe or from brass, phosphor bronze or stainless steel carry soldered leads 8. The gas may be O 2 free such as Ar, He, Ne, Kr, N 2 , Cl 2 , H 2 , CO, CO 2 , SF 6 or a mixture, at any pressure, or O 2 containing gas such as air at sub-atmospheric pressure. The diverter is sealed in epoxy resin or a glass such as lead, soda, borosilicate or silica glass. The gaps separating the film areas may be made by laser or diamond scribing. Structures with three electrodes forming parallel centre-to-end paths (Fig. 3, not shown) and with the film areas on the outer periphery of a body (Fig. 7, not shown). The inter-electrode capacitance with 50 Ám. gaps between C films is of the order of 5 pF, and in atmospheric argon, when compared with atmospheric air, the spark-over voltage is reduced to 320V from 500V, the life on 3 kV. surges of (1 x 40) Á.sec. waveform is increased from 1000 to 1500 surges, time lag at 320 V is 1 Á.sec. falling to less than 0À1 Ásec. at 400 V., and in spite of a direct bias of 100 V., a 10A surge current is cut off without follow current. The results for the other example shown are similar.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2218575A JPS5645263B2 (en) | 1975-02-22 | 1975-02-22 | |
JP50082598A JPS526956A (en) | 1975-07-04 | 1975-07-04 | Surge absorptive element |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1523375A true GB1523375A (en) | 1978-08-31 |
Family
ID=26359364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB562976A Expired GB1523375A (en) | 1975-02-22 | 1976-02-12 | Surge arrester |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2606722B2 (en) |
FR (1) | FR2301915A1 (en) |
GB (1) | GB1523375A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2133209A (en) * | 1982-12-24 | 1984-07-18 | English Electric Valve Co Ltd | A triggered vacuum gap device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3401367A1 (en) * | 1984-01-17 | 1985-07-25 | Elektrowerk Mündersbach GmbH, 5419 Mündersbach | Method for producing a spark gap which is encapsulated in a gas-tight manner in a housing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE460868C (en) * | 1925-09-02 | 1928-06-06 | Elektrophysikalische Werkstaet | Extinguishing spark gap |
US2960632A (en) * | 1955-09-01 | 1960-11-15 | Vickers Electrical Co Ltd | Electrical spark-over protective devices |
US3391371A (en) * | 1966-07-06 | 1968-07-02 | Erie Technological Prod Inc | Overvoltage protective device |
US3961225A (en) * | 1974-02-26 | 1976-06-01 | Mitsubishi Mining & Cement Company, Ltd. | Surge absorber |
-
1976
- 1976-02-12 GB GB562976A patent/GB1523375A/en not_active Expired
- 1976-02-19 DE DE19762606722 patent/DE2606722B2/en not_active Withdrawn
- 1976-02-20 FR FR7604822A patent/FR2301915A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2133209A (en) * | 1982-12-24 | 1984-07-18 | English Electric Valve Co Ltd | A triggered vacuum gap device |
Also Published As
Publication number | Publication date |
---|---|
DE2606722B2 (en) | 1979-02-22 |
FR2301915A1 (en) | 1976-09-17 |
FR2301915B1 (en) | 1979-04-06 |
DE2606722A1 (en) | 1976-09-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19960211 |