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Definition of NEMA Ratings NEMA 1 NEMA 2 NEMA 3
Definition of NEMA Ratings What does NEMA 4 rated mean? In non-hazardous locations, there are several different NEMA ratings for specific enclosure "types", their applications, and the environmental conditions they are designed to protect against, when completely and properly installed. The following provides an overview of the NEMA Types.
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site.ieee.org4. Drives a high-inertia load (in excess of the load WK2 listed in NEMA MG 1 Part 20). 5. Uses an adjustable speed drive as a source of power. 6. Is an induction generator. 7. Is a vertical machine rated 375 kW (500 hp) or greater. 8. Operates in abnormally hostile environments..