MIT1525-US part number 1002-909. 15 kV test voltage is an important feature enabling customers to measure motors and generators above 34500 V (NETA ATS 2007. Section 7.15.1) and equipment rated above 35 kV (PEARL Reconditioning Standard / NETA MTS-1997 Table 10.1). The MIT1525 insulation tester offers high altitude operation and the highest safety rating of the range, CAT IV 1000V to 3000 m.