Have a vendor that uses Variable Frequency Drives and when the utilities capacitor banks kick in it causes a distroution in the voltage. Any Ideas on how to start sizing the choke and where can you find them.
Sounds like you need Industrial Grade Voltage Regulator/Power Conditioner ahead of the VFDs http://www.ustpower.com/ Call the power company to tell you what the problem is. If you need tto install voltage regulators you may even get some credit.