GB645348A - Improvements in lightning arresters, or excess voltage protective devices - Google Patents
Improvements in lightning arresters, or excess voltage protective devicesInfo
- Publication number
- GB645348A GB645348A GB2903/47A GB290347A GB645348A GB 645348 A GB645348 A GB 645348A GB 2903/47 A GB2903/47 A GB 2903/47A GB 290347 A GB290347 A GB 290347A GB 645348 A GB645348 A GB 645348A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- less
- excess voltage
- voltage protective
- zinc
- 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
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/24—Selection of materials for electrodes
Landscapes
- Thermistors And Varistors (AREA)
Abstract
645,348. Protective arrangements. STALHANE, B., and ANDERSON, V. Jan. 30, 1947, No. 2903. Convention date, May 13, 1946. [Class 38 (iv)] In order to increase the resistance to atmospheric corrosion and reduce the pitting of the surface by the discharge currents the spark gap electrodes in a lightning arrester or excess voltage protective device for low power, e.g. telephone circuits are made of a copper alloy containing 80 to 97.5 per cent of copper, having a melting point exceeding 1000‹ C., a thermal conductivity exceeding 0.3 gm. cals./ cm.<SP>3</SP>/sec./‹ C., and plasticity to permit coldrolling drawing &c., with the balance constituents consisting of either at least 5 per cent and less than 20 per cent zinc; 3 per cent or less tin ; 3 per cent or less aluminium ; or about 0.5 per cent silicon and 2 per cent nickel. The preferred balance consists of 10-12 per cent zinc.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE645348X | 1946-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645348A true GB645348A (en) | 1950-11-01 |
Family
ID=20313900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2903/47A Expired GB645348A (en) | 1946-05-13 | 1947-01-30 | Improvements in lightning arresters, or excess voltage protective devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3292030A (en) * | 1963-06-26 | 1966-12-13 | Ass Elect Ind | Electrode assemblies for surge diverters |
-
1947
- 1947-01-30 GB GB2903/47A patent/GB645348A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3292030A (en) * | 1963-06-26 | 1966-12-13 | Ass Elect Ind | Electrode assemblies for surge diverters |
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