Connections for Medium-Voltage Networks
In a 3-phase 3-wire (Delta) system with three separate voltage converters and
three current transformers, the Logger can measure phase-phase (P-P, Delta) or
phase-N (P-N, Wye). See Figure 7.
L1
L2
L3
Figure 7. Measuring 3-Phase Voltages in a 3-Wire (Delta) System with
L1
L1
L2
L3
N
Three Voltage Converters
Power Quality Logger
Using the Logger
L2
L3
CURRENT INPUT
MEASUREMENT INPUT
10 V
MAX
L1/A
RMS
L2 / B
L3 / C
N
830 V
MAX CAT
RMS
1743
POWER LOGGER
START
STOP
I
I
I
I
V
V
N
3
2
1
3
Supply
SUPPLY INPUT
660 V
MAX
88 -660 V
45 -65 Hz
100 -350 V
5 VA
600 V CAT
300 V CAT
V
2
1
POWER
egb006.eps
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