51. Study for Measured Grounding Resistance of a Building Base
- Author
-
Morita, Hiroshi and Nagaoka, Naoto
- Subjects
建築構造体 ,電位降下法 ,電磁界解析 ,簡易接地抵抗計 - Abstract
A simple earth tester, which enables to measure the grounding resistance with a high C-electrode's grounding-resistance of 150 Ω, is developed in this paper. The unique circuit configuration and high sensitivity of the tester reduce the capacity of its current injecting source. It is confirmed that the proposed tester has a sufficient accuracy for a practical application by a comparison with a measured result by a conventional method with a large capacity source. The proposed tester also enables to reduce the length between the P-electrode and the measuring object to half by a proposed correction method with a double P-electrode system. The accuracy of the correction is confumed by a field measurement.
- Published
- 2013