ennoLogic eM870M Insulation Multimeter
Function Descriptions
34
3.2.10 Insulation Resistance Measurement
To measure insulation resistance, set up the meter as shown in Figure 3-10:
1.
Turn on the power switch and set the rotary switch to position .
2.
Connect the red and black test leads to the
INS
and
mA/µA
terminals respectively. (
NOT
to the COM terminal!)
3.
Connect the red probe and the black probe to the two ends of the measured insulator. Press the RANGE key to select a
suitable test voltage range (50V, 100V, 250V, 500V, or 1000V). The measurement range for insulation resistance
corresponds to the available test voltage ranges as follows: 50V---10kΩ~50MΩ, 100V---10kΩ~100MΩ,
250V---100kΩ~250MΩ, 500V---100kΩ~500MΩ, 1000V---100kΩ~2GΩ). Note: There is no auto ranging when
performing insulation resistance measurements.
Warning: After pressing the TEST key, the meter will generate a high voltage of up to 1000V! Do not touch
the leads or probes when the test is active to avoid the risk of shock!
4.
Press the
TEST
key to start measuring. The meter will apply a test voltage to the insulator up to the selected range to
determine the insulation resistance. If the measured insulation resistance is lower than the meter’s measurement range, the
meter will stop measuring automatically. Otherwise the meter will display the result of the test (the insulation resistance).
Press the
TEST
key again to stop measuring.
Notes: When using this function, the meter generates a high voltage up to 1000V. Please be careful to avoid the risk of
shock. Also note that the automatic shutdown feature is disabled when performing insulation resistance measurements.
INS
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