MI 3325 MultiServicerXD
177
11.23
Z loop – Fault loop impedance and prospective fault
current
Fault loop impedance
Range
Resolution
Accuracy
Z
0.12
... 9.99
0.01
(5 % of r 5 digits)
10.0
... 99.9
0.1
100
... 999
1
10 % of reading
1.00 k
... 9.99 k
10
Measuring range according to EN 61557 is 0.12
... 9.99 k
.
Prospective fault current
Range (A)
Resolution
Accuracy
Ipsc
0.00 A ... 9.99 A
0.01 A
Consider accuracy of fault loop
resistance measurement
10.0 A ... 99.9 A
0.1 A
100 A ... 999 A
1 A
1.00 kA ... 9.99 kA
10 A
10.0 kA ... 23.0 kA
100 A
Voltage Ulpe
Range
Resolution
Accuracy
Ulpe
0 V ... 550 V
1 V
(2 % of r 2 digits)
The accuracy is valid if mains voltage is stabile during the measurement.
Test current (at 230 V) ............................ 20 A (10 ms)
Nominal voltage range ............................ 93 V ... 134 V
(16 Hz … 400 Hz)
185 V ... 266 V
(16 Hz … 400 Hz)
R, X
L
values are indicative.
11.24
Zs rcd – Fault loop impedance and prospective fault
current in system with RCD
Fault loop impedance
Range
Resolution
Accuracy
Itest=normal
Accuracy
Itest=low
Z
0.00
... 9.99
0.01
(5 % of r 10
digits)
(5 % of r 12
digits)
10.0
... 99.9
0.1
100
... 999
1
10 % of reading
10 % of reading
1.00 k
... 9.99 k
10
Measuring range according to EN 61557 is 0.46
... 9.99 k
for Itest = normal and 0.48
...
9.99 k
for Itest = low.
Accuracy may be impaired in case of heavy noise on mains voltage.
