Disclosed is an apparatus and method for continuously detecting skips, protrusions, protuberances and other defects in cable conductor shield, comprising a high voltage electrode, a capacitance bridge filter circuit and a corona discharge detector. A noncontacting coaxial electrode is employed to create...http://www.google.fr/patents/US4387336?utm_source=gb-gplus-shareBrevet US4387336 - Method and apparatus for cable conductor shield fault detection
Method and apparatus for cable conductor shield fault detection
