Procedure to measure grounding resistances of electrical installations by measuring the loop impedance
US7102360B2 · kind B2 · utility
1Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2005 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Feb 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A procedure to measure the grounding resistances of electrical installations by measuring the loop impedance. According to this procedure, using voltage generator transformers, a current is injected into the loop and this current is measured using current measurement transformers. Two transformers are united into a single transformer, used as impedance transformer, and the loop impedance is established by taking several measurements that allow determining and eliminating parameters of the transformer, by analysis of the measurement results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.