MI 3102(H) BT
Eurotest
XE
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.
selection for instructions on
key functionality.
Figure 5.57: IMD test
Test parameters for IMD test
Type Test mode
[MANUAL R, MANUAL I, AUTO R, AUTO I]
Limit
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