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Users Manual
24
1. Connect the voltage test leads to the outputs of the voltage
transformers (VTs).
2. In PQ Log, select the measuring range with P-N logging and
matching nominal voltage.
3. Enter the correct converter/transformer ratio for current and voltage.
Note
Current clamp sets are available for 1 A current transformers.
Logging with Two Voltage Converters and Two Current
Transformers
In 3-phase 3-wire systems with two voltage converters (VTs) and two current
transformers (CTs) in an Aron or Blondel measuring circuit, the Logger can
measure only phase-phase (P-P, Delta).
L1
L2, N
L1
L3
L2
L3
POWER LOGGER
1743
START
STOP
POWER
232SR
I
N
I
3
I
2
I
1
V
3
V
2
V
1
CURRENT INPUT
10V
RMS
MAX
L
1
/A
L
2
/B
L
3
/C
N
5VA
45-65 Hz
MEASUREMENT INPUT
SUPPLY INPUT
830V
RMS
MAX CAT
600V CAT
300V CAT
100-350 V
660V MAX
88-660 V
egb009.eps
Figure 10. Measuring 3-Phase Voltages in a 3-Wire System with Potential
Transformers (Aron Measuring Circuit)
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