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Thread: Interesting 3P motor
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10th Mar 2015, 10:46 PM #31Member: Blue and white apron brigade
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A couple of things I forgot to mention about the fan on this motor
1) When naked it sure pumps a lot of air but the restrictive grille on the front of the fan cover knocks the stuff ing out of the air flow. I will rebuild the grill using some mesh
2) The fan is very quite even at 70Hz , pity the motor still squeals a little even with the more efficient of the two VFD
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12th Mar 2015, 08:30 PM #32Member: Blue and white apron brigade
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OK I reset the VFD to the factory settings and the current drawn by the motor dropped by about 30% but it's still almost double what the other 4kW VFD delivers to the same motor.
Now I'm frustratedly stuck in the rut where the VFD Pot only allows the RPM get reach half the max RPM AHRGGGH!
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