MI 3155
Eurotest
XD
Test and measurements
174
Measurement procedure
Enter the
AUTO TN (RCD)
function.
Set test parameters / limits.
Measure the impedance Zref at origin (optional), see chapter
Connect test cable to the instrument.
Connect 3-wire test lead or Plug commander to the object under test, see
Start the Auto test.
Save results (optional).
Figure 7.111: Examples of AUTO TN (RCD) measurement results
Measurement results / sub-results
Uln
Voltage between phase and neutral conductors
ΔU
Voltage drop
Z (LN)
Line impedance
Z (LPE)
Loop impedance
Rpe
PE conductor resistance
Zref
Reference Line impedance
Ipsc (LN)
Prospective short-circuit current
Ipsc (LPE)
Prospective fault current