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Megger WM6 Insulation Tester, 500V DC

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2 pounds
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Key Features

  • Insulation resistance metere measures continuity and insulation resistance on domestic and industrial wiring, cables, transformers, generators, and other electrical systems
  • Analog meter with manual range selection
  • Powered by a low-voltage, hand-cranked, brushless AC generator
  • Measures insulation resistance from 0 to 200 megaohms and continuity from 0 to 100 ohms
  • Uses a 500V DC test voltage to confirm the compliance of 415/240V AC wiring installations

Package Details

Shipping Weight: 4.5 pounds
Package Size: 12.2 x 10.4 x 8.8 inches

Product Description

The Megger WM6 insulation resistance tester measures insulation resistance and continuity in domestic and industrial wiring, generators, transformers, cables, and other electrical systems. This analog meter has manual range selection for flexibility of use. The unit is powered by a low-voltage, hand-cranked, brushless AC generator, eliminating the need for batteries. The unit measures insulation resistance from 0 to 200 megaohms and continuity from 0 to 100 ohms. The 500V direct current (DC) test voltage is used to confirm the safety compliance of 415/240V alternating current (AC) wiring installations. The WM6 is commonly used by electricians, electrical contractors, and telecommunications workers.


Insulation resistance range 0 to 200 megaohms
Continuity range 0 to 100 ohms
Power supply Hand-cranked generator
Weight 650g / 1.5 lb.
Dimensions 61 x 131 x 98mm / 2.4 x 5.1 x 3.9 inches

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Electrical test meters report electrical circuit properties, such as voltage, resistance, capacitance, and continuity. Available in handheld or benchtop form, they detect electrical problems in equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Single-function meters, such as battery testers and voltage testers, measure one property of a circuit, and multimeters measure multiple properties. Electrical test meters display information either in analog form using a needle that moves on a calibrated scale, or in digital form using digits or a graphic representation on an LED screen. Meters have electrical properties that are to be measured and the anticipated range of results, and should have a rating that is higher than the maximum value of the anticipated range. An electrical test meter has multiple settings corresponding to potential ranges of values for the properties it can measure. A manual ranging meter requires the operator to flip through different settings until the correct range is reached. An autoranging meter cycles through range settings automatically until it reaches the correct range.

Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.

What’s in the Box?
  • WM6 Insulation Tester
  • Test leads set with shrouded crocodile clips
  • Instructions

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