Calibrated, diagnostic insulation resistance testers, industry standard Megger testers, for testing and maintenance of high voltage electrical equipment, motor windings and HV transmission lines. Hi-pot testers (high potential, or high voltage, or HV testers) can be used to test insulation resistance, earth bonding, and many other applications where a high voltage test needs to be performed. Our brands include Megger, Agilent, Keysight.