The Fluke 1535 and 1537 Insulation Resistance Testers and Megohmmeters are engineered to simplify frontline troubleshooting whether on the factory floor or working in the field at a solar installation. With user selectable test voltages from 250 V to 2,500 V and resistance measurements up to 500 GΩ these testers allow users to cover more workload with a single tool. Equipped with an intuitive user interface, a short circuit current of up to 5 mA and a CAT IV 600 V rating these portable high-voltage insulation testers can deliver rapid and stable resistance measurements. The 1537 Insulation Resistance Tester also allows the user to store measurements for later review or PC transfer, using the provided software.

The Fluke 1537 has these additional features: Extended Measurements with AC/DC voltage and resistance measurements; Stable Resistance Measurements with short circuit current up to 5mA; Fine-tunable Test Voltage from 250 V to 2500 V in 100 V increments; Dielectric Discharge Rate Calculation; Ramp Test Mode; Visual and Audio Continuity Indicator; Customizable Testing Parameters; Effortless Data Management with provided PC software; Extended 3-year warranty.