G - Physics – 01 – R
Patent
G - Physics
01
R
324/29.2
G01R 31/02 (2006.01) H01B 13/00 (2006.01)
Patent
CA 1194114
ABSTRACT OF THE DISCLOSURE An apparatus for electrically testing a multi- core cable comprises a pick-up unit for picking up cores individually from a group of cores at one end of the cable. The conductor wires of the cable are collectively electrically interconnected by a contact gripping device at one end of all the conductor wires, the opposite ends of which are immersed in a conductive liquid in a vessel at the other end of the cable. The conductor wire of each picked up core is electrically separated from the other cores and power is supplied to the picked up conductor wire so that a current flows through the picked up wire through the conductive liquid, conductor wires of other cores and the contact gripping device to the ground. A determining circuit determines in response to the current that any picked up core is in a discontinuity state when the current is less than a first value and that an insulation breakdown has occurred between any picked up core and any other core of the cable when the current is greater than a second value which is greater than the first value. Thus, both discontinuity testing and defective insulation testing are carried out simultaneously by the present apparatus.
409379
Dainichi-Nippon Cables Ltd.
G. Ronald Bell & Associates
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