Amprobe AMB-50 Insulation-Resistance-Tester - Manual (Page 12)

6
B.Measuring Insulation Resistance
� OPERATING CAUTION!
• When performing insulation resistance tests, remove all power from the circuit to be
measured and discharge all the power.
• Operating the Meter must be very careful as it outputs dangerous voltage during
measurement. Must
make sure the tested object is firmed clipped, hands are away from the clips, then press TEST
button
to put high voltage.
• Do not short circuit the testing leads during high voltages output or test insulation resistance
after high voltages output. This kind of incorrect operating may cause sparking and fire,
which damages the Meter and harms to you.
• Do not measure over 10 seconds when:
500V measure resistance lower than 2Me
1000V measure resistance lower than 5Me
2500V measure resistance lower than 10Me
5000V measure resistance lower than 20Me
To measure insulation resistance, set up the Meter as Figure 5 and do the following:
1. Press IR button to select insulation resistance measurement.
2. When there is no testing voltage output, press and button to select voltages of 500V,
1000V, 2500V or 5000V.
3. When performing insulation resistance tests, remove all power from the circuit to be
measured and discharged all the power.
Green
Black
Red