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Inverter current value
I have two systems to drive motors, one with the commercial power supply and the other with the inverter.
The mechanical load is the same for both systems.
I measured the current value using a clamp meter during operation, and it was approximately 10 A for the system with the commercial power supply and approximately 1.5 A for the system with the inverter.
What is the possible reason for this difference?
The mechanical load is the same for both systems.
I measured the current value using a clamp meter during operation, and it was approximately 10 A for the system with the commercial power supply and approximately 1.5 A for the system with the inverter.
What is the possible reason for this difference?
- Category :
Answer
1. As the measurement condition is unknown, the possible cases are as follows:
- If you measured the current on the input side of the inverter, since the current waveform is distorted, it cannot be measured correctly with the clamp meter.
- If you measured the current on the output side of the inverter, the running frequency is different from the frequency for commercial power supply operation.
2. When the inverter operate at the same frequency as that of the commercial power supply, the energy consumption increases for the amount of loss by the inverter itself. The energy saving effect is obtained by lowering the running frequency.
- If you measured the current on the input side of the inverter, since the current waveform is distorted, it cannot be measured correctly with the clamp meter.
- If you measured the current on the output side of the inverter, the running frequency is different from the frequency for commercial power supply operation.
2. When the inverter operate at the same frequency as that of the commercial power supply, the energy consumption increases for the amount of loss by the inverter itself. The energy saving effect is obtained by lowering the running frequency.
- Product Name
- Inverter, magnet motor drive
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