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Questions

  • No : 21340
  • Release Date : 2018/08/22 16:27
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Input phase loss

The current values of the input side and output side are measured with the clamp meter.

The output current is 1.4 A, but the current of the input side are 0.1 A for S phase, and 1.4 A for R and T phases.
Why is only the current value of the S phase small?

And does the inverter output the output current even the input side is lost?
Category : 

Answer

Check if the input side voltage is equally applied to all three phases.

The S phase voltage may be low because the input current flows when the voltage of the input side is higher than the voltage inside the inverter.  
Even one phase is lost, the output current flows since the current is supplied from other two phases.
Product Name
Inverter, magnet motor drive
Product Category
Inverter
Series
FR-E700, FR-D700, FR-F700PJ, FR-A700, FR-F700P, FR-F700
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