• Pocket-sized, self-powered instrument - no battery maintenance problems
• Tests at 500 volts DC
• Powered by an easy-to-turn, low-voltage, AC brushless generator

Megger WM6 tester is a self-contained instrument designed to give rapid and accurate resistance measurements. The hand-operated generator is coupled with the latest electronic technology, thus allowing theWM6 to test insulation at 500 V DC up to 200 MΩ.

A low-voltage, hand-cranked, AC brushless generator, which is easy to turn by hand, is the power source. It is connected to a stabilized electronic inverter to provide the test voltage. All resistance readings are given directly on a moving-coil meter with a rugged taut-band suspension movement, a white-on-black scale and an orange "dayglow" pointer. This gives good legibility in most lighting conditions. An electronic circuit is used to give a four-decade resistance scale for insulation measurement

There is a slider switch for selection of either the insulation resistance or continuity functions, and the strong ABS plastic case has a recess to accommodate the folded-away generator handle for compactness. Two 4-mmterminal sockets are fitted into the side of the case for connecting the test leads.