| US 7,489,140 B1 | ||
| Apparatus, method and system for spark testing an insulated cable | ||
| Cyrus Scott Butterworth, Heflin, Ala. (US); and Wilber Freeman Powers, Jr., Newnan, Ga. (US) | ||
| Assigned to Southwire Company, Carrollton, Ga. (US) | ||
| Filed on Nov. 05, 2007, as Appl. No. 11/934,881. | ||
| Int. Cl. G01R 31/02 (2006.01) | ||
| U.S. Cl. 324—544 [324/57; 324/536; 324/516; 324/514; 439/66; 439/700; 439/840] | 20 Claims |
| 1. A spark tester apparatus for testing the integrity of insulation surrounding a grounded conductor of a test cable, comprising:
a conductive housing comprising an entry side aperture and an opposing exit side aperture, the conductive housing configured
such that the test cable enters the conductive housing via the entry side aperture and exits the conductive housing via the
exit side aperture;
a rotatable adjustment ring secured within a perimeter of the entry side aperture or the exit side aperture such that the
rotatable adjustment ring may rotate within the entry side aperture or the exit side aperture with respect to the conductive
housing;
at least one elastic electrode connected at a first end to the rotatable adjustment ring and at a second end to the conductive
housing adjacent to the opposing entry side aperture or exit side aperture; and
an electrical contact for receiving a voltage and distributing the voltage across the conductive housing and the at least
one elastic electrode.
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