TESTBOY TV 430 N Bedienungsanleitung Seite 13

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When resistance < 1M, the
Buzzer
buzzer will sound.
Operating Instructions
Voltage test
WARNING:
To avoid electric shock, be cautious.
Alter you finish insulation resistance test, discharge die tested object fully.
To avoid electric shock, do not touch the object under test and any naked part with your hand or skin. Always
place your finger behind the Finger guards an the fest leads when using the probes.
Before you do insulation resistance test, you should do the followings: make sure that the object to be tested
has no Charge, connect the object to ground and discharge the object fully.
When you do Insulation resistance test, don't apply other voltage to the test loop.
Before test, make sure that the rotary switch is in correct range and all the connections are tight.
After you set the rotary switch in "2000M/250V", "2000M/500V" or "2000M 1000V" range positions and
then press "TEST' button, the "E" and "L" terminals will output high voltage of 250V‐1000V. Don`t touch the
naked parts of the meter and the object under tast, otherwise, electric shock will occur.
AC Voltage Test
Don`t attempt to test the voltage which is more than 600V
Insert the plug of the high‐voltage test lead Info ACV jack, the plug of the normal test lead into G jack
Set the rotary switch in V‐range. Connect the probes across the object to be measured.
Read the reading an the display
Resistance and Continuity Measurements:
Make sure that the object to be measured has no charge. Disconnect power to the object which you want to
measure.
Insert the plug of the high‐voltage test lead into ACVQ jack, the plug of the normal test lead into G jack.
Set the rotary switch in "" range, Connect the probes across the load to be measured.
Read the reading on the display. If the resistance <50 , the built‐in buzzer will sound.
Insulation Resistance Measurement
Insert the plug of the high‐voltage test lead into "L" jack, the plug of the test lead which has a big test clip end
into E jack, and die plug of the normal test lead into G jack.
The test lead from E jack is a ground line.
The test lead from L jack is a live line
The test lead from G jack is a shielding line, it is to be connected to the outside surface of the object which you
want to measure, this Iine's function is to avoid that the possible leakage current affects measurement. Set die
rotary switch to OFF position. Connect the big test clip to the test point of the object to be measured, connect
the probe (or alligator clip) of the normal fest lead to the outside surface of the object to avoid leakage
current.
Choose rated voltage:
To choose the desired rated voltage, set the rotary switch to corresponding voltage position.
Touch the probe of the high‐voltage test lead to another test point of the object.
Press TEST button. That High Voltage Indicator lights means high voltage has being outputted. Read the
reading on the display.
When the insulation resistance <1M , the buzzer will Sound.
Stop the measurement:
After you press TEST button, High Voltage indicator lights, it means high voltage is being outputted. About 30
seconds later, High Voltage indicator goes oft, it means the high voltage output Stops, meanwhile the
measurement stops automatically.
If you want to do measurement in continuous duration, you should press LOCK key before High Voltage
Indicator goes off.
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