Regarding the power indicated on the motor nameplate and the power displayed by the inverter

2017-05-28View Original

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The nameplates on the two existing pump motors indicate I1=29.4, I2=28.8, and U=380; the power factors are 0.85 for one motor and 0.86 for the other. Why then does the frequency converter show P1=4.1KW and P2=6.4KW? I seek advice from experts

Reply #22017-05-29

This is clearly electric current; i represents electric current

Reply #32017-05-31

I know that I represents current. My question is why the power displayed on the inverter differs significantly from the power specified on the motor’s nameplate (15KW on the nameplate)

Reply #42017-05-31

The nameplate indicates the rated current and power; what about the actual current you measured?

Reply #52017-05-31

A big horse pulling a small cart – low power output

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Regarding the power indicated on the motor nameplate and the power displayed by the inverter

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