Partial discharge detecting device for resin-molded transformer
US5233305A · kind A · utility
12Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/1227
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Typically, in a partial discharge detecting device for a resin-molded transformer with tap terminals of a no-load switching type on the high voltage winding, the output signal of a partial discharge detecting sensor connected between the tap terminals is applied through an amplifier circuit to an indicator. The sensor is arranged on the high potential side whose potential corresponds to the potential to ground of the tap terminals. This construction contributes to detection of void coronas formed in the transformer with high accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.