Amal Posted September 18, 2008 Report Share Posted September 18, 2008 Hello everyone. I am having an equipment with two 22kW motors controlled by a single 80 kW VFD. Since my process speed has stabilized to a very small range, I am thinking of by-passing the VFD and also about replacing the motors by Eff1 motors. However, I wish to use the VFD as a soft starter. Can this be done? What sort of precautions I must take to prevent damage to the drive. I will have to avoid backfeeding, right? Any ideas on design of the by pass circuit? Also, am I likely to get an improvement in the electrical efficiency by doing all these? Can the gain be around 10%? Thanks. Amal Link to comment Share on other sites More sharing options...
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