3. Test of Insulation Resistance.
①ConnectionofTestTerminals
Insert the red test lead into the L socket of the
instrument and the plug of the black test lead with
flat crocodile clamp into the E socket of the
instrument
.
②Test connection
The wiring of E socket of the instrument is the earth wire
;
The wiring of L socket of the instrument is the line wire.
The G terminal socket of the instrument is the shield
wire to test the high insulation resistance. If necessary,
insert the plug ofthe black test wire with probe into the
G terminal socket of the instrument, to eliminate the
measurement error caused by the leak current in the
surface of the product, and ensure the accuracy of the
test
;
③SelectionofRatedVoltage
Select the rated voltage you need to test the insulation
resistance by turning the knob to the relevant voltage
class.
④Test Operation
Connecttheother terminal of the wire to the object
under test
.
Press the Test / Stop key
,
the red
indicator turns on
,
indicating the high voltage output
of test is connected.
When thetest has started, the LCD of the instrument
displays some readings. The value displayed by LCD is
the insulation resistance of the object under test.
When the high voltage indicator is on, it indicates the
test instrument is working properly.
⑤Turn off
Whenthetestisover
,
press the Test / Stop key
,
the
red indicator turns off
,
indicating the test high
voltage has been disconnected
.
Put the DIP switch at
OFF position,LCD displays nothing. For capacitive
load,besure to discharge the residual charges in the
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