... 1000V/2500V/5000V . The digital bridge resistance measurements for the insulation resistance test, with the use of lightweight, ... , stable performance, the trial motors, cables, insulation resistance testing needs of mechanical and electrical equipment, telecommunications equipment ... test voltage500V, 1000V, 2500V, 5000VAuto-ranging insulation resistance test can be measured to: 1M-20GΩAC voltage ...