Tester of dry dielectric strength for insulated electric cable
US4151461A · kind A · utility
3Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Jan 16, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/59
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a tester of dry dielectric strength of the insulating sheath of an electric cable comprising a source of high alternating voltage applied between the core of the cable connected to ground and the external surface of the sheath, in which electrical contact with the sheath is provided only by means of a tube surrounding the cable and filled with an ionized atmosphere, the tension required for ionization being supplied by a generator which is independent of the measuring circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.