Method and apparatus to monitor electric isolation of a high-voltage direct current electrical circuit
US8283929B2 · kind B2 · utility
3Cited by
1References
15Claims
0Family size
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Key dates
| Filing date | Jun 1, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrically isolated high-voltage direct-current electric circuit is monitored. Electrical signals are periodically sampled, and ground isolation indexes are calculated. A trend corresponding to trend elements is characterized. The characterized trend is compared with an expected trend with deviations indicative of potential faults.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.