IEEE-841 NEMA Premium Efficiency Motors

2016-03-24 admin 1715


    IEEE的英文全称是the Institute of Electrical and Electronics Engineers(美国电气电子工程师学会),其前身是成立于1884年的美国电气工程师协会(AIEE)和成立于1912年的无线电工程师协会(IRE)。1963年,AIEE和IRE宣布合并,电气电子工程师学会(IEEE)正式成立了。

    IEEE-841是针对石油和化学工业或其它严苛用途电机的制造标准, 主要适用于高效(NEMA Premium)、全封闭风扇冷却(TEFC)、单速、多相鼠笼式感应电动机,1~500HP, NEMA机座143T以上。
    TECO东元电机的AEHH8B系列低压电机符合最新的IEEE 841-2009版要求,符合UL和CSA安全认证。


Electrical Features

Designed to meet NEMA MG-1, MG-13 and IEEE 841

Stock available in 460V and 575V; other voltages available upon request

Premium efficiency; meets or exceeds the requirements of EPACT '92 and Canadian Federal Efficiency Levels defined in CSA C390-93; Full load efficiency of all ratings is certified under the EEV Program of the CSA

UL recognized Class F non-hygroscopic insulation system with HPE™ (High Pulse Endurance) index, heavy heat resistance enameled copper wire insures longer winding life and reliability

CSA certified for Class 1, Division II, Group B, C and D with Temperature Code T3C

Class B temperature rise, 80°C rise by resistance method at 1.0 S.F.; 90°C rise at 1.15 SF

3 Leads solderless lug terminals

Meets GM 7E-TA specifications

Mechanical Features

Bearing temperature rise is below 45°C for all 4P and 6P ratings; 50°C for all 2P motors

Sound power levels are below 85 dBA providing quiet operation

Full cast iron construction: frame,brackets, fan cover and conduit box with IP55 rated protection

Frame provided with two threaded drain holes with drain plugs and a drilled and tapped hole for a ground lug

Corrosion-resistant, cast iron conduit box has twice the volume required by NEMA. The conduit box is fully gasketed with NPT threaded conduit entry

Regreaseable bearing construction with inner bearing caps prevent bearing contamination

Non-sparking plastic or bronze fan

All internal rotor, stator and shaft surfaces are cleaned and coated with moisture resistant varnish; Exterior is painted with zinc-chromate epoxy base with a blue finish

Stainless steel hardware and nameplate

Vibration will not exceed 0.08 inches per second

Motors can be re-rated for 415, 400 and 380 volts at 50 HZ

CSA and UL approved for Inverter Duty per NEMA MG1 Part 31, with speed range of 20:1 variable torque and 10:1 constant torque