Recommended measurement device chart – GE Industrial Solutions AF-300 MICRO-$AVER II User Manual
Page 67
7-3
Figure 7-2. MEASUREMENT LOCATIONS AND DEVICES EXAMPLE
MEASUREMENT POINTS AND METERS
Since the Drive's input/output voltage and current contain high frequencies, selection of the wrong measuring device
can lead to gross miscalculations. When using a CT (current-detection transformer) to measure the current, the amount
of error will be large if the frequency is low. Because of this, always use a CT with as large a capacity as possible. See
the following chart and Figure 7-2 for recommended measurement devices.
RECOMMENDED MEASUREMENT DEVICE CHART
Item
Simple Measurement
Precision Measurement
Input Voltage
Tester - (Voltmeter)
Moving-Iron type voltmeter
Input Current
Clamp Meter
Moving-Iron type ammeter
Input Power
—
Electrodynamometer type wattmeter
Output Voltage
Tester - (Voltmeter)
Rectifier type voltmeter
Output Current
Clamp Meter
Moving-Iron type ammeter
Output Power
—
Electrodynamometer type wattmeter