Insulation-Resistance Testers provide a quantifiable resistance value for all of a product's insulation. A direct current (DC) test voltage is applied and the measured current value is used to calculate the resistance of the insulation. Insulation-Resistance Testers are used to detect design flaws or other factors resulting in excessive leakage current flow. Improper insulation can result in shock, injury, or death. If you are looking for an Insulation-Resistance Tester to ensure that your cables, generators, motors, and other equipment are running properly, request a quote at TRS-RenTelco. We offer a wide variety of Insulation-Resistance Testers for sale and rent with 24/7 customer service.