DETECTING METHOD OF SHIELD TAPE DISCONNECTION OF HIGH- TENSION CABLE, DETECTOR FOR SHIELD TAPE DISCONNECTION, AND JUDGMENT DEVICE FOR SHIELD TAPE DISCONNECTION

摘要

PROBLEM TO BE SOLVED: To provide a detecting method and device for shield tape disconnection of high-tension cable capable of regularly detecting the disconnection of the shield tape wire of a leading-in cable in a non-contact manner. SOLUTION: This device comprises a superposing CT 10 for injecting a measuring monitoring voltage to the shield tape 3S of the leading-in cable 3 in a non-contact manner and current detectors 11, 12 and 13 for detecting the current in no contact every shield tape 3R, 3T and 3S. In this device, a shield tape disconnection judgment device 15 compares the detection current from each current detector 11, 12 or 13 with a preset reference current while transmitting a monitor signal of a prescribed frequency different from commercial power by use of the superposing CT 10 and judges and reports the disconnection of each shield tape.