MI 3101 EurotestAT: Measurements
2
line/loop impedance
70
PS/2
RS 232
Figure 5.38: Connection of impedance adapter to the instrument
2
line/loop impedance measuring procedure
Connect
Impedance adapter to the instrument (see
figure 5.38
).
Select the functions
Z-LINE
or
Z-LOOP
.
Enable and set
limit
value (optional).
Power
ON
the Impedance adapter (ON/OFF key, green LED will lit).
Connect
Impedance adapter to tested installation.
Press the
TEST
key for measurement.
Store
the result (optional).
Figure 5.39: Example of 2
line/loop measurement results
Displayed results:
Z ........................ Line / loop impedance,
I
SC
...................... Prospective short-circuit current,
R........................ Resistive part of line impedance,
Xl ....................... Reactive part of line impedance.
The following parameters are displayed in sub-screen for single-phase line impedance
measurement:
IscMaxL-N ......... Maximum prospective short-circuit current.
IscMinL-N .......... Minimum prospective short-circuit current.
IscStd ................ Standard prospective short-circuit current.
When testing phase-to-phase line impedance the following parameters are displayed in
sub-screen:
