MI 3101 EurotestAT: Measurements
2
line/loop impedance
69
Note
:
Distance units can be selected in Miscellaneous/Initial settings/Other settings menu,
see 4.4.5.
5.8 2
line/loop impedance
The measurement extends application range of the instrument and is performed with
Impedance adapter A1143 connected to the instrument via RS 232 interface. It is
automatically recognized in Z-LINE and Z-LOOP functions. With this adapter, low
impedances up to 1999 m
can be measured. The measurement is covered by
requirements of the EN 61557-3 standard.
See chapter
4.2 Single test
for functionality of keys.
Figure 5.37: Impedance adapter
connected
Test parameters for 2
line/loop impedance measurement
Function Z-LINE
Test
Impedance function
[m
L-N, m
L-L]
Functions Z-LINE and Z-LOOP
FUSE type
Selection of
fuse
type
[---, NV, gG, B, C, K, D] *
FUSE I
Rated current
of selected fuse
FUSE T
Maximum
breaking time
of selected fuse
Isc_lim
Minimum short circuit
current
for selected fuse combination.
See Appendix A for reference fuse data.
*--- Means no fuse selected
Additional key:
F2
Toggles between result screens.
Test setup for 2
line/loop impedance measurement
