METREL EurotestXC MI 3152 User Manual

MI 3152(H) EurotestXC (2,5 kV) Tests and measurements
120
Measurement procedure
 Enter the Z line function.
 Set test parameters / limits.
 Connect test cable to the instrument.
 Connect test leads or Plug commander to the object under
test, see Figure 7.43.
 Start the measurement.
 Save results (optional).
Figure 7.44: Examples of Line impedance measurement result
Measurement results / sub-results
Z
Line impedance
Ipsc
Prospective short-circuit current
Uln
Voltage measured between L/L1 – N/L2 test terminals
R
Resistance of line impedance
XL
Reactance of line impedance
Imax3p
Maximal three-phases prospective short-circuit current
Imin3p
Minimal three-phases prospective short-circuit current
Imax2p
Maximal two-phases prospective short-circuit current
Imin2p
Minimal two-phases prospective short-circuit current
Imax
Maximal single-phase prospective short-circuit current
Imin
Minimal single-phase prospective short-circuit current
Prospective short circuit current I
PSC
is calculated as follows:
Z
kU
I
SCN
PSC


where:
U
n
......... Nominal U
L-N
or U
L-L
voltage (see table below),
k
sc
........ Correction factor (Isc factor) for I
PSC
. Refer to chapter 4.6.5 Settings for more
information.
U
n
Input voltage range (L-N or L-L)
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)
Table 7.5: Relationship between Input voltage – U
L-N(L)
and nominal voltage – U
n
used for
calculation

METREL EurotestXC MI 3152 Specifications

General

Brand	METREL
Model	EurotestXC MI 3152
Category	Measuring Instruments
Language	English