Voltage Drop; Z Auto, Auto Tt, Auto Tn, Auto Tn (Rcd), Auto It - METREL EurotestXC MI 3152 Instruction Manual

MI 3152(H) EurotestXC (2,5 kV)

12.12 Voltage Drop

ΔU – Voltage drop
Measuring range (%)
0.0 ... 99.9
Uln, Ipsc, Zref, Z
Refer to chapter 12.10 Z line – Line impedance and prospective short-circuit current for
technical specification.
measuring range ..................................... 0.00 Ω ... 20.0 Ω
Z
REF
Test current (at 230 V) ........................... 6.5 A (10 ms)
Nominal voltage range ........................... 93 V ... 134 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),
Resolution (%)
0.1
185 V ... 266 V (45 Hz ... 65 Hz)
321 V ... 485 V (45 Hz ... 65 Hz)
183
Technical specifications
Accuracy
Consider accuracy of line
impedance measurement(s)*