Ground resistance measuring method for electrical installation, involves measuring loop impedances using inductance and frequency values to determine and eliminate parameters of impedance transformer obtained by combining two transformers,申请号FR20040001624-传众专利搜索

Ground resistance measuring method for electrical installation, involves measuring loop impedances using inductance and frequency values to determine and eliminate parameters of impedance transformer obtained by combining two transformers

申请公布号：FR2866432(A1)

申请号：FR20040001624

申请日期：2004.02.18

申请公布日期：2005.08.19

申请人：

CHAUVIN ARNOUX

发明人：BOUGAUD PATRICK;KANTOROWSKI BERNARD;ARNOUX DANIEL;ARNOUX AXEL

分类号：G01R27/18;(IPC1-7):G01R27/18

主分类号：G01R27/18

摘要：<p>The method involves injecting and measuring a current in a loop using a voltage generating transformer and an instrument current transformer, respectively. The transformers are combined into a single transformer used as an impedance transformer. Loop impedances (ZX) are measured using different inductance and frequency values to determine and eliminate parameters of the impedance transformer during establishment of the impedance.</p>