METREL EurotestXE User Manual

MI 3102(H) BT EurotestXE Measurements
52
5.7.1 Line impedance and prospective short circuit current
Circuits for measurement of line impedance
Figure 5.31: Phase-neutral or phase-phase line impedance measurement – connection of plug
commander and 3-wire test lead
Line impedance measurement procedure
 Select the Z LINE function using the function selector keys.
 Set sub-function to Zline using UP / DOWN keys.
 Select test parameters (optional).
 Connect test cable to the instrument.
 Connect test leads to the item to be tested (see Figure 5.31).
 Press the TEST key to perform the measurement.
 Store the result by pressing the MEM key (optional).
Figure 5.32: Examples of line impedance measurement result
Displayed results:
Z ............... line impedance
Isc ............ prospective short-circuit current
Lim ........... low limit prospective short-circuit current value
Prospective short circuit current is calculated as follows:
Z
kUn
I
SC
SC


where:
Un ......... Nominal L-N or L1-L2 voltage (see table below),
ksc ........ Correction factor for Isc (see chapter 4.4.6 Isc factor).
U
n
Input voltage range (L-N or L1-L2)
110 V
(93 V  U
L-N
 134 V)
230 V
(185 V  U
L-N
 266 V)
400 V
(321 V  U
L-L
 485 V)

METREL EurotestXE Specifications

General

Brand	METREL
Model	EurotestXE
Category	Measuring Instruments
Language	English