MI 3102(H) BT EurotestXE Measurements
68
5.14 Testing of insulation monitoring devices – IMD (MI 3102
BT only)
This function is intended for checking the alarm threshold of insulation monitor devices (IMD) by
applying a changeable resistance between L1/PE and L2/PE terminals.
See chapter 4.2 Function selection for instructions on
key functionality.
Test parameters for IMD test
Test mode[MANUAL R, MANUAL I, AUTO R, AUTO I]
MANUAL R: Minimum insulation resistance [OFF, 5 k ÷ 640 k]
MANUAL I: Maximum current [OFF, 0.1 mA ÷ 19.9 mA]
AUTO R: Minimum insulation resistance [OFF, 5 k ÷ 640 k], Timer
[1 s ÷ 99 s]
AUTO I: Maximum current [OFF, 0.1 mA ÷ 19.9 mA], Timer [1 s ÷ 99 s]
Test circuit for IMD test
Figure 5.58: Connection with 3-wire test lead