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CASE STUDY 1
Inrush Current and Current RMS Value of an Industrial Dryer
Environment:
Problem:
Analysis:
Target: 1-phase 2-wire, 100V circuit
This is a simple simulation example.
By using an industrial dryer (100V
AC, 1kW, 50/60Hz), the RMS
fluctuation and inrush current are
measured while switching the dryer
from "OFF=>ON=>COLD=>OFF."
Note:
Model 9694 Clamp on Sensor is
clamped to the 10-turn coil with a CT
setting 0.1.
To record the inrush current event waveform, use the current peak event.
To record the waveform while the dryer is continuously operating in HOT, using the manual event
([ESC]+[EVENT]) is effective.
Current RMS Value Fluctuation
OFF HOT HOTCOLD
The current value while a dryer is working is
10Arms, but the start-up current rises to
10.951Arms.
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