VFD were used in the 1930s
of course werner von siemens!
around here there oldest drives I have ever seen are Graham drives from the late 70's early 80's.
i have one graham drive only 25 hp
it is 6x6x2!!!
Originally Posted by ncboston
VFD's have been around for quite a while. At least 15 that I know of. I believe the ECM motors are fairly new.
I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!