MI 3102(H) BT
Eurotest
XE
Measurements
66
5.13
First fault leakage current – ISFL (MI 3102 BT only)
First fault leakage current measurement is performed in order to verify the maximum current
that could leak into PE from observed line. This current flows through the insulation resistance
and reactance (capacitance) between the other lines and PE when the first fault is applied as
short circuit between observed line and PE.
selection for instructions on
key functionality.
Figure 5.53: ISFL measurement
Test parameters for first fault leakage current measurement
Limit
Maximum leakage current
[OFF, 3.0 mA ÷ 19.5 mA]
Test circuit for first fault leakage current
Figure 5.54: Measurement of highest first fault leakage current with 3-wire test lead
Figure 5.55: Measurement of first fault leakage current for RCD protected circuit with 3-wire test
lead
