The Fluke 1535 is a compact and lightweight insulation tester that provides fast, accurate and reliable insulation testing up to 2500V. It is designed to simplify on-site troubleshooting, both in industrial and solar systems. The insulation tester offers a selectable test voltage of 250 V/500 V/1000 V/2500 V and resistance measurement up to 500 GOhm. These features allow users to perform a wide range of operations with just one device. The intuitive user interface, a short-circuit current of up to 5 mA and safety in accordance with CAT IV 600 V ensures fast and stable resistance measurements anywhere.