We have a 500 HP motor driven pump. Using a VFD powered from a 300Kw generator.
The pump is operating at the lower end of the operating curve at 38Hz. The drive is showing 150 A at 38HZ. (119Kw)
The generator has a Deep Sea engine controller which shows a load of 42 Kw and 15% load, (57A).
Why does the generator show such a difference in load from the VFD. If we calculated it by 3X (57A) we get closer (141Kw) but why doesn’t the generator controller show a load closer to the VFD value? The only other loads from the motor is a controller at about 30 watt.
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