The Fluke 1535 and 1537 Insulation Resistance Testers are cracking tools for frontline troubleshooting in industrial and solar applications, delivering precise insulation measurements up to 500 GΩ with selectable test voltages (250/500/1000/2500 V, ±5% accuracy up to 50 GΩ).
Both feature automatic PI/DAR calculations to assess insulation health, while the 1537 enhances diagnostics with dielectric discharge (DD), ramp testing, AC/DC voltage (600 V, ±2%), resistance (60 kΩ), and visual/audible continuity. The 1537 also stores data for PC transfer via USB with included software. Safety is ensured with CAT IV 600 V rating, >30 V live circuit warnings, and fast capacitive discharge (1.5 s/μF).
Weighing 1.3 kg, these IP40-rated testers are powered by eight AA batteries (up to 6500 tests at 250 V or 1300 at 2500 V) and operate in -10 °C to 50 °C. The kit includes test leads, alligator clips, probes, a soft carrying case, and for the 1537, a USB cable and PC software. With a one-year warranty (1535) or three-year (1537), the Fluke 1535 and 1537 are reliable, efficient mates for robust insulation testing in demanding environments.
