Introducing the 1537 insulation measuring device with advanced functions for service technicians, electricians and companies that maintain motors, transformers, switch cabinets and solar systems, for example. This measuring device offers finely adjustable test voltages from 250 to 2,500 V, resistance measurements up to 500 GO and a short-circuit current of up to 5 mA, thus enabling fast and stable measurements. Improve productivity and plant safety with a single tool that simplifies troubleshooting and delivers fast and accurate results. With intelligent measurement functions such as automatic calculation of polarisation index (PI) and dielectric absorption ratio (DAR), wide measurement ranges and high safety according to CAT IV 600 V as well as the integrated voltage alarm, the Fluke1537 offers reliable and stable insulation tests with a compact device. Additional functions such as voltage and resistance measurements for DC and AC and easy data management with the included software package make it the best choice for insulation testing.