Fluke NORMA 4000 Operator's Manual page 54

NORMA 4000/5000
Operators Manual
L1
L2
L3
P
1
S
1
5-16
I I
3 2
P P P P
2 1 2 1
S
S
S
2
2
1
HI
VOLTAGE
1000 V max
LO
3
PROBE
EXT.SHUNT
10 V max
HI
CURRENT
10 A max
LO
ALL INPUTS MAX 1000V CATII TO
Figure 5-10. 3-Phase (W3) Voltage and Current Transducer Measurement
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.
I V
1 3
P N
C
2
n
c
S
S
2
1
HI
VOLTAGE
1000 V max
LO
2 1
PROBE
EXT.SHUNT
10 V max
HI
CURRENT
10 A max
LO
Note
V V
2 1
B
N A N
b n a n
Load
see Note
Max. 10 m
esn077.eps