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KUSAM-MECO Feb 2018
®
LED Successive Indication, Battery-less
Test the tester on a known functioning circuit or
component shortly before and after use to verify
tester functioning.
LCD Numeric Indication KM 69, Battery operated
Equip with a battery-operated LCD numeric display
for complementary operating voltage indication.
WARNING
do not touch the contact electrode during use. The
tester turns on automatically at threshold voltages as
specified in the specification section.
When significant operating ACV is being detected,
v
LEDs (
+v
LED &
-v
LED) turn on. When
significant operating DCV is being detected,
+v
LED
turns on for correct test probes polarity, and
-v
LED
turns on for reversed polarity. Operating voltage
levels are indicated as a series of LEDs in a
successive indication manner. These indicating
LEDs actually get power from the system under test
without the need of internal battery supply
(battery-less).
~
ELV (Extra Low Voltage) Limit Indication
This feature is to warn the user of the presence of a
voltage above the ELV limit, not for its evaluation.
WARNING
When an operating voltage above the ELV limit
(50Vac and/or 120Vdc) is being detected, the ELV-
LED turns on. The indicating LED gets power from
the system under test without the need of internal
battery supply (battery-less).
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KUSAM-MECO Feb 2018
®
WARNING
When activated, the tester actually connects to a low
impedance load of nominal 6.1k
W
to draw a leakage
current of
³
30mA typical at 230VAC to trip RCD
circuit breakers. In the event of a full continuous 5
second activation interval, the protection PTC will
heat up and affect the load current magnitude
thereafter. Allow cooling for 120 seconds before the
next activation then.
—
With proper line voltage level indicating, press
momentarily the RCD button to activate. The tester
gives flashing RCD-LED accompanied with beep
sound as warning during activation. Each activation
interval is automatically limited to 5 seconds
maximum.
RCD (Residual Current Devices) Leakage-Path KM 69
As illustrated, connect the tester to the receptacle
under test by measuring the voltage across L and
PE (live conductor and a protective earth ground)
The tester should indicate proper line voltage level.
—
RCD Leakage-Path activation is inhibited at
<201V or >264V to avoid misuse.
—
If the RCD circuit breaker does not trip (line
voltage is still on) within a reasonable short period of
time (mostly a fraction of a second), the breakeris
either not working properly or there is a wiring
problem.
—
If the RCD circuit breaker trips (line voltage is cut
off), the flashing RCD-LED as well as the voltage
indication should turn off.