The USA has been at the forefront in requiring minimum efficiency levels for low voltage motors. The current Energy Independence and Security Act (EISA) was signed into law on December 19, 2007, revised in 2010 and replaced by the Integral Horsepower Final Rule (10 CFR Part 431), issued by the Department of Energy (DoE) in June 2016.
The Integral Horsepower Rule (IHP) builds on the previous Acts, updating the mandated efficiency standard for almost all three-phase AC industrial motors from 1 to 500 HP (0.75 to 373 kW).
The Integral Horsepower Rule (IHP) applies to both NEMA and IEC motors manufactured or imported for sale in the United States.
ABB offers full range of NEMA motors under Baldor brand and a broad range of IEC motors.