MI 3325 MultiServicerXD
109
Test results / sub-results
Z
Loop impedance
Ipsc
Standard prospective fault current
Imax
Maximal prospective fault current
Imin
Minimal prospective fault current
Ub
Contact voltage at maximal prospective fault current (contact voltage measured
against Probe S if used)
R
Resistance of loop impedance
XL
Reactance of loop impedance
Ulpe
Voltage L-PE
Freq
Frequency
Standard prospective fault current I
PSC
is calculated as follows:
𝐼
𝑃𝑆𝐶
=
230 𝑉
𝑍
where
𝑈
𝐿−𝑃𝐸
= 230 𝑉 ± 10 %
The prospective fault currents I
Min
and I
Max
are calculated as follows:
𝐼
𝑀𝑖𝑛
=
𝐶
𝑚𝑖𝑛
𝑈
𝑁(𝐿−𝑃𝐸)
𝑍
(𝐿−𝑃𝐸)ℎ𝑜𝑡
where
𝑍
(𝐿−𝑃𝐸)ℎ𝑜𝑡
= √(1.5𝑅
𝐿−𝑃𝐸
)
2
+ 𝑋
𝐿−𝑃𝐸
2
𝐶
𝑚𝑖𝑛
= {
0.95; 𝑈
𝑁(𝐿−𝑃𝐸)
= 230 𝑉 ± 10 %
1.00; 𝑜𝑡ℎ𝑒𝑟𝑤𝑖𝑠𝑒
and
𝐼
𝑀𝑎𝑥
=
𝐶
𝑚𝑎𝑥
𝑈
𝑁(𝐿−𝑃𝐸)
𝑍
𝐿−𝑃𝐸
where
𝑍
𝐿−𝑃𝐸
= √𝑅
𝐿−𝑃𝐸
2
+ 𝑋
𝐿−𝑃𝐸
2
𝐶
𝑚𝑎𝑥
= {
1.05; 𝑈
𝑁(𝐿−𝑃𝐸)
= 230 𝑉 ± 10 %
1.10; 𝑜𝑡ℎ𝑒𝑟𝑤𝑖𝑠𝑒
Refer to
A 1143
– Euro Z 290 A adapter Instruction manual
for detailed information.
Test parameters
Fuse Type
Selection of fuse type [gG, NV, B, C, D, K, Off, Custom]
Fuse I
Rated current of selected fuse
Fuse t
Maximum breaking time of selected fuse
Test
1)
Test [-, L/PE, L1/PE, L2/PE, L3/PE]
1)
The measurement doesn’t depend on the setting. The parameter is meant for
documentation.
Refer to
Fuse tables guide
for detailed information on fuse data.
Test limits
Ia(Ipsc)
Minimum fault current for selected fuse
