For NEMA series motors, its mounting type ，Power Class　and performance requirement all comply to the standard of National Electrical Manufacturers Association.

NEMA series motors own advantages of high efficiency, large starting torque, higher insulation class (class F), lower noise, optimized structure and artistic outline. Its operating condition is not more than 40oc ambient temperature and 1000 meters altitude. With continuous duty(S1), it owns two kinds of Protection Class: TEFC( totally enclosed fan cooled type) and ODP (open drip-proof type).

NEMA Series High Efficiency Three Phase Induction Motors (Frame 143-449) are developed by NANYANG EXPLOSION PROTECTION GROUP CO. LTD in line with NEMA Standards, which ratings, mounting dimensions and electrical performances meet the requirements of latest NEMA Standards, among which efficiencies meet the requirements US EPACT laws & CSA C390, 1993 Standard. Measurement of efficiency and losses is per IEEE112B. These motors possess many remarkable features such as high efficiency and energy saving, low noise, little vibration, large margin of safety in temperature rise, popular shape, safe and reliable operation.

NEMA series motors adopt NEMA Design B. Insulation is Class F. Service factor is 1.15. Rated voltage is 230/460V or 575V. Frequency is 60Hz. Protection is IP55 and cooling is IC0141. They are suitable for the applications

without special requirements to drive various machinery and equipment. The maximum ambient temperature shall not exceed 40 ℃and altitude shall not exceed 3300 ft (1000 m).

NEMA series motors can also adopt NEMA Design C or D, Class H or B insulation, various mountings or different voltage and frequency if required by customers.

Type Designation, for example: NEMA284TS-2
NEMA: as per NEMA Standard
28: Shaft Height Code
4: Number Code Related to 2F Dimension
T: Standard Dimensional Frame
S: Standard Short Frame for Direct Coupling
2: Number of Poles