Fluke 1744 - Manual (Page 33)

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Users Manual
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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 2 3 2 S R IN I3 I2 I1 V3 V2 V1
CURRENT INPUT 10 VRMS MAX L1/A
L2/B
L3/C
N
5 VA 45 -65 Hz
MEASUREMENT INPUT SUPPLY INPUT
830 VRMS MAX CAT 600 V CAT
300 V CAT
100 -350 V
660 V 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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