There is an overlap between those functions traditionally associated with cable testers and hipot testers. Whether you must use one or the other or both is determined by the number of conductors in a wire harness and the level of test voltage required. If high-voltage testing at greater than 1,500 VDC is needed, a hipot tester is necessary; but if more than 80 wires are involved, you will need a cable tester as well. These numbers are only approximate because vendors are constantly developing new instruments with increased functionality. This means that as cable test and hipot products continue to borrow capabilities from each other, more versatile equipment will become available. Cable testers with extended insulation testing features may have the means to perform both low-cost and rigorous A-620 testing in a single instrument.
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