5520A
Operators Manual
4-60
4-55. Three-Phase Power Calibration
You can configure three 5520As to calibrate a three-phase power meter. This example
uses the assumption that you want to apply a perfectly balanced calibration output with a
unity power factor. By changing the phase relationships, you can apply other test
stimulus. The figure shows the phase relationship of each 5520A. By changing the phase
relationships, you can apply other test stimulus.
Phase B
Phase C
5520A
10 MHz
OUT
10 MHz
IN
10 MHz
IN
A
5520A
CURRENT
Phase A
VOLTAGE
A
B
C
NEUTRAL
5520A
B
C
nn225f.eps
Figure 4-17. Three-Phase Power Calibration
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