Posted by leroy in ne on June 26, 2008 at 17:01:18 from (67.63.106.62):
In Reply to: VFD posted by CBBC on June 26, 2008 at 12:21:22:
village i work for just installed a new Dan Foss ? brand VFD on 75 HP well pumping 800 GPM. including a new check valve. start stop water hammer is less than 3 PSI as programmed for 2 minute ramp up ramp down. approx. $17,000 for VFD. also changed motor to more compatible type for vfd use. total package with trade in of motor with about 13,000 hours on it was about $24,000. this brand is supposed to be the most suitable for pump use were other VFD units are more for use on mechanical equipment such as feed mills, rock crushers ect. which need ramp up for surge load control
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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