A variable frequency drive is an electronic device that allows you to start, stop, and control the speed of a three phase motor. It is also a motor starter as it is equipped with overload protection. Read more »
What is the difference between a 'new surplus' motor and a 'factory new' motor?
Our New Surplus electric motors and drives are new and unused overstock or discontinued items offered at lower prices and come with our 90-day warranty.
Factory New products are competitively priced and come with a manufacturers warranty.
Variable frequency drives (VFDs or inverters) now play an important part in major industry.
Within the last 10 years they have been perfected to control and vary the speed of 3 phase electric motors. They serve many purposes, besides speed control. Homeowners and hobbyist alike, who have lathes or milling machines with a 3 phase motor, usually don't have 3 phase power to operate. These VFDs (instead of using a rotary phase converter) can now be used to convert single phase power to 3 phase power. Read more »
Cooling Tower: Two-Speed-One Winding, Variable Torque Blue Chip® Severe Duty, XRI®
Three Phase, Totally Enclosed, Rigid Base
APPLICATIONS:
Cooling towers, Fan and Blowers, and other severe duty environments where long life and ultra-high efficiency are desired. Guaranteed efficiencies offer an eXtra Return on your Investment when using these premium efficiency motors on high cycle or long run applications. Replacement for two-speed Marley cooling tower motors.
FEATURES:
Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
Internal and external epoxy paint
Class F insulation
1.15 Service Factor
Extended grease tubes, regreasable in service
T-drains provided for effective drainage (Installed in both endshields)
Shaft Slinger
Forsheda seals on both ends
Actual test and vibration data supplied with each motor
Ball Bearings
UL Recognized and CSA Certified
Three year warranty
Horizontal mounting only; consult Engineering for Vertical mounting