The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1985
Filed:
Aug. 19, 1982
Shogo Tanno, Itami, JP;
Dainichi-Nippon Cables, Ltd., Hyogo, JP;
Abstract
An apparatus for electrically testing a multi-core cable comprises a pick-up unit (6) for picking up a core separately on a one by one basis from a group of cores (101) at one end of the cable (100). Conductor wires of all of a plurality of cores (101) of a cable are collectively rendered conductive by a contact grip (25, 25') at one end of all the conductor wires the opposite ends of which are immersed into a conductive liquid (41) in a vessel (39) at the other end of the cable. The conductor wire of the 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, the conductive liquid, the conductor wires of other cores and through the contact grip to ground. A determining circuit (300) determines in response to the current that the picked up core is in a discontinuity state when the current is smaller than a first value and that an insulation breakdown has occurred between the picked up core and any other core of the cable when the current is larger than a second value which larger than the first value. Thus, both a discontinuity test and a defective insulation test are carried out simultaneously by the present apparatus.