MEGGER MJ15 STATIC SMOOTH DRUM ROLLER

Technical Description

The Megger MJ15 is a rugged, compact analog insulation tester designed for insulation resistance measurements up to 20 GΩ with test voltages selectable at 500 V, 1000 V, 2500 V, and 5000 V DC. It features a resiliently mounted analog scale for durability and ease of reading, along with unique pass/fail scale overlays to facilitate rapid go/no-go testing and reduce operator error. The instrument supports an insulation resistance range from 100 kΩ to 20 GΩ and provides a short circuit current of 1.5 mA ± 0.5 mA. It can handle capacitive loads up to 5 µF and includes a discharge resistor of less than 500 kΩ to safely dissipate charge after testing. The MJ15 operates on a dual power source: a hand-cranked, low-voltage brushless AC generator for battery conservation or when battery power is unavailable, and eight AA-size cells (alkaline or rechargeable). It provides a voltage range readout from 0 to 600 V AC for DC indication and features interference rejection at 1 mA rms for 50 to 60 Hz interference. The test terminals are safety recessed to accommodate locking connectors, ensuring secure and safe connections. The tester is housed in a lightweight, flame-retardant ABS case with a polycarbonate display window, measuring 220 x 160 x 115 mm and weighing approximately 1.6 kg with batteries. The MJ15 meets IEC1010 safety standards and is well-suited for field use with robust mechanical and electrical design for reliable insulation testing in various environments.