These start with high- temperature insulation. The basic high efficiency motor design yields low losses and therefore generates less heat. This combination provides cooler running initially, and the spike- resistant wire helps the motor withstand the stresses of inverter duty. We cannot recommend the use of standard efficiency motors since they typically have higher losses, which means they run hotter. A slight increase in speed can add a lot of additional horsepower to the load while a decrease in speed can drop the horsepower of the pump dramatically.
Power is saved anytime pump speed can be slowed down during low demand periods.
In these applications adjustable speed drives can often yield a payback in a relatively short time. He joined Baldor as Vice President of Marketing in 1986 and advanced through several posts to his present position in 1993. He holds a B.S. in mechanical engineering from UCLA and is chairman of the Executive Board and chairman of the Motor Generator Section of NEMA in addition to having other NEMA policy and rulemaking roles.