AVO INTERNATIONAL
MEGGER®
BM2 2 0 SERIES
• Combine d analogue arc/
digital dis play
• Backlit LCD for re ading in
re s tricte d light
• Te s t le ad null facility
• Hands -fre e continuity
te s ting
• Automatic voltage warning
and dis charge of circuit
unde r te s t
Analogue Arc/Digital
Insulation and Continuity Testers
DESCRIPTION
FEATURES AND BENEFITS
The MEGGER® BM220 Series of
Analogue Arc/ Digital Insulation and
Continuity Testers comprises a range
Further indicators illuminate to show
low battery state and if the
protective fuse has ruptured. To
avoid accidental use of the 1000 V
•
Insulation test ranges produce the
rated test voltage into a 1 mA load.
Testing can be carried out to
International Standard
a
of
instruments
which
offers
comprehensive test features in a cost
effective package.
range, an indicator flashes for
seconds when the range is selected
giving a visual warning.
3
requirements.
•
•
Digital display of insulation
measurement up to 999 MWon
either linear or logarithmic backlit
analogue arc digital display.
The instruments will automatically
shut down after 5 minutes of non use
to conserve battery life.
Combining an analogue arc with a
clear 3 digit LCD, the instruments
offer
a
choice of insulation test
voltages, with the option of single,
dual or triple test voltage instruments.
Continuity range has 0,01 W
resolution and a short circuit
current in excess of 200 mA to
meet the requirements of
International Standards.
APPLICATION
A
selectable backlit display is
The
BM220
Series
will
find
incorporated to ensure readings may
be taken in low light areas such as
distribution cupboards.
applications in electrical contracting,
both on domestic and industrial
systems, and in site maintenance and
service departments.
•
•
•
No need to press the test button
when continuity testing, leaving
both hands free.
All instruments detect inadvertent
connection to a live system which is
energised to greater than 25 V,
dependent on model, the instruments
either switch to the default voltmeter
or indicate the presence of voltage by
beeping and flashing the display.
A choice of instruments allows testing
to be carried out on circuits with
rated voltages up to 1000 V and all
instruments may be used on
capacitive circuits since, at the end of
an insulation test, the circuit under
test will be automatically discharged.
Automatic switch-off after 5
minutes’ inactivity conserves
battery life.
Microprocessor control of the
solid state digital/analogue display
ensures that only the correct scale
for the range selected is visible,
avoiding taking readings from the
wrong scale.
Under this condition an insulation or
continuity test cannot be carried out
and the instrument will therefore
automatically inhibit any further
action until the source of voltage has
been removed. Although insulation
tests should only be carried out
The BM220 Series of Insulation and
Continuity Testers are ideal for testing
transformers, motors, generators,
switchgear, domestic
appliances,
power tools etc., as well as fixed
wiring systems. All instruments meet
•
•
•
Automatic voltage detection
avoids accidental contact with
dangerously live circuits.
on
de-energised
systems,
the
the
requirements
of
most
instruments are protected on all
ranges against accidental connection
to phase to earth voltages up to 300 V
a.c. and phase to phase voltages of
400 V a.c., Installation Category III.
International Standards including
VDE0413 Part 1 and BS7671 (the 16th
Edition of the IEE Wiring Regulations).
Auto zero allows automatic
compensation for test lead
resistance.
Buzzer range operates at <5 W.
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