TRMS Multimeter, motor development and insulation tester with 30,000 digits. The METRAHIT COIL is a digital multimeter with insulation measurement and winding short-circuit detection. It is robust and reliable for professional use and features an attractive design with impact-resistant plastic housing and state-of-the-art technology. The METRAHIT COIL is a portable and sturdy measuring device, especially for servicing electric machines and vehicles, such as generators, industrial trucks, or forklifts. It is field-ready and has an internal battery-independent power supply. TRMS multimeter with ± 30,000 digits resolution for voltage, current, temperature, etc. Insulation resistance measurement with test voltages from 50 to 1000 V and foreign voltage detection. Winding short-circuit detection with a test voltage of 1,000 V (surge test). Compact tester for electric machines, drives, and generators. Detection of insulation faults and winding short-circuits, including those that only occur under load, with a test voltage greater than the operating voltage. Extensive multimeter functions for service and diagnostics, e.g., with ratio measurement for adjusting parallel-running motors. The METRAHIT COIL enables easy and efficient diagnosis of winding short-circuits in electric machines, both in the lab and on-site. The device is particularly used in the service of machines and vehicles with electric drives. It is field-ready and has an internal battery-independent power supply. DAkkS calibration certificate included. 36 months warranty against material and manufacturing defects. COIL test adapter for motors with other inductances available upon request. Delivery includes: 1 x METRAHIT COIL multimeter, 1 x COIL test adapter 10 mH to 50 mH, 1 pair of safety test leads (1.5 m) with 4-mm test probes, 1000 V CAT III, 600 V CAT IV, 2 x 1.5 V batteries, type AA, 1 x quick start guide in German/English, 1 x DAkkS calibration certificate, 1 x rubber protective cover.