Hioki Power HiTester 3193, Instruction Manual

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8.4 Example Measurement
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8.4.5 Efficiency Measurement of an Inverter (3
φ
3W) and Motor
Input side (3φ3W)
50/60 Hz
P
123
P
456
Output side (3φ3W)
Basic wave: 0.5-100 Hz
Carrier: 2-20 kHz
Inverter
Torque
meter
Motor
Number
of rotating
(chB)
Torque value
(chA)
NOTE
When channel 1, 2, 3 are the input and channel 4, 5, 6 the output:
Channel 1, 2, 3: input side, channel 4, 5, 6: output side
Input: 3V3A, AC mode / output: 3V3A, AC or AC+DC mode
Analog output from the torque meter: to channel A of the 9603
Analog output from the rotation counter: to channel B of the 9603
Motor power:
P m
・
Efficiency of an inverter :
P
456
η
1 = ─── ×100
P
123
・ Efficiency of a motor :
P
m
η
2 = ─── ×100
P
456
・ Efficiency of total :
P
m
η
3 = ─── ×100
P
123
Measuring the efficiency of an inverter (3
φ
3W) and motor
The torque meter and rotation counter analog outputs used should be chosen
to have as fast as possible a response.