Hi , We have many generators for using oil well. I am facing problem regarding generator loading. At many of our oil well location if we increased vfd frequency above certain limit than VFD always trip even if the total load of generator in not more than 40%. If we replace the generator with little higher rating than it will be fine. For example if i am facing same problem with 320kva generator and if i am replacing it with 400kva even if the load is not even 50% , the problem will be solved.