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Bendix 60B4-1-A AC/DC Insulation Tester

(Retronics section)

Bendix 60B4-1-A AC/DC Insulation Tester
The theory behind insulation and dielectric testing is that if the insulation system in the equipment under test can withstand a deliberate overvoltage stress, it will easily operate under all specified normal and abnormal electrical and environmental conditions for its entire design life. The original insulation test method used a high voltage AC power supply with an external milliammeter to read the leakage current. Back in the late 1950’s Bendix decided to design a more versatile AC-DC high-voltage insulation tester. It was assigned Bendix type number 60B4-1-A.
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