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NORMA 4000/5000
Operators Manual
5-16
HI
VOLTAGE
1000 V max
LO
PROBE
EXT.SHUNT
10 V max
123
HI
CURRENT
10 A max
LO
ALL INPUTS MAX 1000V CATII TO
PROBE
EXT.SHUNT
10 V max
HI
CURRENT
10 A max
LO
HI
VOLTAGE
1000 V max
LO
Max. 10 m
Load
see Note
P
2
I
1
I
2
P
1
S
2
S
1
P
2
P
1
S
2
S
1
I
3
P
2
P
1
S
2
S
1
V
1
V
2
V
3
N
C
c
n
N
n
B
b
N
n
A
a
L1
L2
L3
esn077.eps
Figure 5-10. 3-Phase (W3) Voltage and Current Transducer Measurement
Note
• In 4-wire power systems, is the common “N” of the 3 voltage
transducers connected to the neutral line?
• In 3-wire power systems, is the common “N” of the 3 voltage
transducers left open creating a star point?
• Or, it might be connected to the star point of a wye-connected load.
• Or, it might be connected to earth if the internal star point of the power
system is connected to earth also.
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