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It seems that only recently a new wave of electrical safety testing equipment came to market promising to make production line testing safer, faster and more efficient. Although skeptical of these new and unfamiliar microprocessor controlled testers, electrical product manufacturers slowly began replacing their transformer-in-a-box equipment and immediately saw big benefits. Microprocessor-based hipot, ground bond, insulation resistance, and line leakage testers entered the market with advanced features like high and low trip current limits, multiple memory locations, and ground fault circuit interrupters. These testers helped reduce setup time, all but eliminate operator error, and make electrical safety testing a more streamlined and manageable process for manufacturers of electrically powered products.