4 If the Live Circuit warning will be displayed on the LCD and/or the buzzer
sounds, do not press the test button but disconnect the instrument from
the circuit. Make the circuit dead before proceeding.
5 Press the test button, the display will show the insulation resistance of the
circuit or the appliance to which the instrument is connected.
6 Note that if the circuit resistance is greater than 20MΩ, the instrument will
autorange to the 200MΩ range. If it is greater than 200MΩ at the 500V
or 1000V range, it will autorange to the 2000MΩ range.
7 When testing is complete release the test button before disconnecting
the test leads from the circuit or from the appliance. This will ensure that
the charge built up by the circuit or the appliance during insulation test
is dissipated in the discharge circuit. In the discharging process, Live
Circuit warning will be displayed on the LCD and the live circuit warning
buzzer will sound.
Fig. 17
Fig. 18
Insulation
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