| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure a leakage current of a small value passing through an insulator from an electric wire supported at a supporting structure via the insulator without impairing the supporting strength of the insulator. SOLUTION: This insulator leakage current measurement apparatus 10 measures a leakage current passing through the insulator 13 from the electric wire 11 supported at the supporting structure 12 via the insulator 13, is provided with both a plurality of supporting members 16 made of electrically conductive materials and arranged in parallel between the supporting structure 12 and the insulator 13 for mounting the insulator 13 to the supporting structure and current sensitive means 19 each arranged around the supporting members 16 and serially connected to each other for detecting a leakage current passing through the supporting structure 12 from the insulator 13 via each supporting member 16, and measures a current passing through the current sensitive means. The effects of electric induction are excluded from the electric wire 11 by an induction correction means 23. COPYRIGHT: (C)2007,JPO&INPIT
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