MDtest (100-140 V) - User’s Manual 4 Measurements
• Do not touch the exposed conductive parts of the tested appliance
while measurement is in progress – RISK OF ELECTRIC
SHOCK!
• Do not disconnect the test leads while measurement is in progress
or immediately after finishing the measurement. The capacitive
component of the tested appliance can be charged to a voltage
of up to 300 V; after the [TEST] key is released, this voltage is
automatically discharged.
• Make sure the tested appliance is de-energized – its mains voltage
must be disconnected before the start of the measurement!
• Before measuring resistance, the MDtest device checks if the
DUT is de-energized. If so, then an acoustic signal sounds and
the display shows a warning message (Interference voltage at
the input).
• Resistance measurement is also possible if the MDtest is con-
nected to the IT mains.
Procedure:
• Press the [6 RISO] key and release it.
• Press one of the function keys to select the type of measuring you require.
• Connect the appliance for testing:
– For a one-phase appliance with a movable power supply cord – plug in
its mains plug to Test Socket 1.
– For a three-phase appliance with movable power supply cord – connect
the PE pin of its plug to the instrument’s PE terminal by means of
the optional test lead + crocodile clip. Then connect the remaining
current-carrying conductors by means of the test lead + test tip to the
instrument’s RISO / IALT terminal.
– For a hard-wired appliance – first disconnect the appliance from
the mains! Connect the point of the PE connection to the instrument’s
PE terminal by means of the optional test lead + crocodile clip. Then
connect the remaining current-carrying conductors by means of the test
lead + test tip to the instrument’s RISO / IALT terminal.
• If an applied part is measured, plug it into the PAT terminal.
• Switch on the tested appliance’s mains switch.
• Press the [TEST] key. It is recommended that you hold the [TEST] key
down for 5-10 seconds (or even longer if the displayed result is not stabilized);
the influence of the tested appliance’s internal capacitance can be eliminated
by this method.
• After finishing the measurement the last measured value is displayed.
c
2018 ILLKO, s.r.o. www.illko.cz Page 24
To Next Page
Loading...