MI 3101 EurotestAT: Appendix H
DK modifications
135
Circuits for measurement of fault loop impedance
L1
L2
L3
N
PE
R
E
Ro
L
PE
N
L/L
1
N/L2
PE/L3
Figure H.2: Connection of plug cable and universal test cable
Fault loop impedance measurement procedure
Select the
Z-LOOP
function.
Select test
parameters
(optional).
Connect
test cable to the EurotestAT
.
Connect
test leads to the tested object (see
figure H.2
).
Press the
TEST
key.
After the measurement is finished
store
the result (optional).
Figure H.3: Examples of loop impedance measurement results
Displayed results:
Z ..............Fault loop impedance,
I
SC
............Prospective fault current,
R..............Resistive part of loop impedance,
Xl .............Reactive part of loop impedance,
