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Measures leakage current while applying a dc voltage at or above the insulation sys­tem's operating level. This measurement aids in determining the insulation system's ability to withstand overvoltages such as lightning strikes and switching surges. Unit is compact and portable, air-insulated, uses no oil, and has a plus or minus 2 per­cent accuracy. Unit measures current as low as 0.1 microamperes and has a continu­ously variable test voltage with zero-start safety interlock. Unit provides fast charging of high-capacitance samples. Includes a current guard circuit for highly accurate measure­ments. An optional strip chart recorder for hard copies is available.

Complete with separate measuring and charging modules. A Kelvin-type, four-wire mea­surement eliminates errors caused by lead and contact resistances Digital readout with automatic zero. Range: 0 to 6 ohms in 5 ranges. Resolution: 1.0 microhms. Includes a 7-foot (2 meter) helical lead set.

Channel disturbance waveform analyzer

Dielectric test set

Digital ground, resistance tester

15-11

TM 5-684/NAVFAC MO-200/AFJMAN 32-1082

Table 15-1. Suggested list of minimum facility-wide field test equipment (continued)

Test equipment Infrared imager................

Description

Provides an infrared thermal measuring and imaging system with thermoelectric cool­ing.

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