METREL EurotestXC MI 3152, Instruction Manual

Page: 184 / 203

MI 3152(H) Eurotest XC (2,5 kV) Technical specifications
183
12.12
Voltage Drop
ΔU – Voltage drop
Measuring range (%) Resolution (%) Accuracy
0.0 ... 99.9 0.1
Consider accuracy of line
impedance measurement(s)*
Uln, Ipsc, Zref, Z
Refer to chapter 12.10 Z line
– Line impedance and prospective short-circuit current
for
technical specification.
Z
REF
measuring range .....................................
0.00 Ω ... 20.0 Ω
Test current (at 230 V) ........................... 6.5 A (10 ms)
Nominal voltage range ........................... 93 V ... 134 V (45 Hz ... 65 Hz)
185 V ... 266 V (45 Hz ... 65 Hz)
321 V ... 485 V (45 Hz ... 65 Hz)
*See chapter 7.14 Voltage Drop for more information about calculation of voltage drop result.
12.13
Z auto, AUTO TT, AUTO TN, AUTO TN (RCD), AUTO IT
Refer to chapters listed below for detailed technical specification:
12.5.1 RCD Uc
– Contact voltage
,
12.7 Z loop
– Fault loop impedance and prospective fault current
,
12.8 Zs rcd
– Fault loop impedance and prospective fault current in system with RCD
,
12.10 Z line
– Line impedance and prospective short-circuit current
,
12.12 Voltage Drop ,
12.14 Rpe
– PE conductor resistance
,
12.23 ISFL
– First fault leakage current (MI 3152 only)
and
12.24 IMD (MI 3152 only) ,