METREL EurotestXC MI 3152 Instruction Manual page 128

MI 3152(H) EurotestXC (2,5 kV)
Measurement results / sub-results
ΔU
Voltage drop
Ipsc Prospective short-circuit current
Un Voltage L-N
Zref Reference line impedance
Z Line impedance
Voltage drop is calculated as follows:
where:
ΔU
Calculated Voltage drop
Zref Impedance at reference point (at origin)
Z Impedance at test point
U Nominal voltage
n
I
Rated current of selected fuse (Fuse I) or custom value I (U)
n
Table 7.6: Relationship between Input voltage – U

 
( Z
 
U %
U Input voltage range (L-N or L-L)
n
110 V (93 V  U  134 V)
L-N
230 V (185 V  U
L-N
400 V (321 V  U
L-L
calculation
127

Z ) I
REF N 
100
U
N
 266 V)
 485 V)
and nominal voltage – U
L-N(L)
Tests and measurements
used for
n