METREL EurotestXC MI 3152 - IMD - Testing of Insulation Monitoring Devices (MI 3152 Only)

MI 3152(H) EurotestXC (2,5 kV) Tests and measurements
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7.22 IMD – Testing of insulation monitoring devices (MI
3152 only)
This function checks the alarm threshold of insulation monitor devices (IMD) by applying a
changeable resistance between L1/PE and L2/PE terminals.
Figure 7.75: IMD test menu
Test parameters / limits
Test
Test mode [MANUAL R, MANUAL I, AUTO R, AUTO I]
t step
Timer (AUTO R and AUTO I test modes) [1 s ... 99 s]
Rmin(R1,R2)
Min. insulation resistance [Off, 5 k ... 640 k],
Imax(I1,I2)
Max. fault current [Off, 0.1 mA ... 19.9 mA]
Connection diagram
Figure 7.76: Connection with 3-wire test lead