Megger WM6, User Manual

GENERAL DESCRIPTION

APPLICATIONS

The WM6 MEGGER

®

Insulation and Continuity Tester

is a completely self contained instrument designed to
give rapid and accurate measurement of insulation
resistance and continuity resistance.

The WM6 uses a low voltage hand-cranked a.c.
brushless generator as the power supply. This
generator is easy to turn and is connected to a
rectifier and d.c. to d.c. converter to provide the test
voltage.

The WM6 uses a moving coil meter with taut band
suspension, white scales on a black scale plate and
an orange ‘dayglow’ pointer. An electronic circuit is
employed to produce a four decade calibrated scale
for insulation resistance measurement from 0 to 
200 M

Ω

.

Two shrouded sockets are provided in the side of the
case for the test leads and a slider switch selects
either insulation or continuity tests (‘M

Ω

’ or ‘

Ω

’). The

case is robust, made of ABS plastic, and the
generator handle folds neatly against it when not in
use.

The WM6 is intended for the direct measurement of
insulation resistance and continuity of domestic and
industrial wiring, cables, transformers, motors,
generators, electrical machinery and appliances.
Because the WM6 is self-powered it is suitable for
use during installation and commissioning work as
well as for service and maintenance applications.

Note:— The cover of this instrument has been given

an antistatic treatment which should be
effective for many months. If in the course of
time the cover is found to retain electrostatic
charges, it should be re-treated with a
suitable antistatic solution.

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