NEMA电机基本知识.doc

一、概述 NEMA系列标准三相异步电动机是全封闭自扇冷式电动机。该系列电动机按照美国电机制造商学会NEMA标准设计和制造。电机款式新颖、制作精良、安全可靠。该电机具有效率高、温升低、噪声振动小等特点。 该系列电动机防护等级为IP55，绝缘等级为F级，冷却方式为IC411，采用NEMA标准B设计，使用系数为1.15，额定电压为230460V，额定频率为60Hz。环境温度范围-1540，海拔不超过3300英尺。适用于无特殊要求的场合，可作为各种机械设备的动力配套。该电动机可根据用户需要进行特殊设计与制造，如TC型或H级绝缘，或不同电压、不同频率之要求。 二、型号含义 如：28 4 T：“28”表示其值等于机座中心高的4倍（in），“4”表示机座轴向底脚孔长度代号，“T”表示有标准尺寸的机座标志。36 5 TS：“36”表示其值等于机座中心高的4倍（in），“5”表示机座轴向底脚孔长度代号，“TS”表示轴伸尺寸为标准短轴的机座标志。三、接线盒 电动机具有9根或12根引出线，引出线长度从伸出机座起6英寸，线端标志及接线图按MG1-2.62的规定，接线盒内有接地标志及螺钉。 四、安装型式 T型有底脚的普通安装结构形型式；TC型有底脚，C型平面安装的结构型式，电动机的安装方式应符合MG1-4.03标准规定。 五、订货须知 1、订货时请注明电动机型号、功率、转速、电压、频率及安装型式等。 2、如有特殊要求，请在合同中注明，并事先与制造厂联系。型号额定功率转速效率功率因数满载电流堵转电流堵转转矩最大转矩噪声(LW)重量额定转矩额定转矩HPkWr/min%COS460V%dB(A)kg同步转速3600r/min143T1.51.1344082.50.841.9201752508522145T21.53440840.842.5251702408525182T32.2346085.50.853.6321602308844184T53.7346087.50.855.7461502158845213T7.55.5351088.50.868.463.51402009166215T107.5351089.50.8611.2811352009175254T1511353090.20.8616.611613020094130256T2015353090.20.8622.514513020094145284TS2518.53540910.8727.9182.513020094173286TS30223540910.8732.9217.513020094212324TS4030354091.70.8746.3290125200100230326TS5037354092.40.8756.7362.5120200100254364TS60453550930.8766.9435120200101294365TS75553550930.8783.2542.5105200101320405TS10075356093.60.87110725105200102390444TS12590356094.50.88137907.5100200104520445TS150110356094.50.881661085100200104570447TS2001503560950.882191450100200107612同步转速 1800r/min143T1.00.75175082.50.661.5152753007022145T1.51.11750840.692.1202502807024145T21.51750840.692.7252352707026182T32.2176087.50.733.9322152507445184T53.7176087.50.835.9461852257444213T7.55.5177089.50.89.363.51752157967215T107.5177089.50.8212.481165200797725484177.71161602008483256T20151775910.8423.814515020084115284T2518.5177592.40.8728.2182.515020088140286T3022177592.40.8633.6217.515020088184324T40301780930.8646.529014020089230326T50371780930.8657.3362.514020089245364T6045178093.60.8569.743514020095296365T7555178094.10.8486.4542.514020095397405T10075178094.50.85114.572512520098507444T12590178094.50.85137907.5110200102568445T1501101785950.861631085110200102846447T2001501785950.872231450110200103970同步转速 1200r/min145T10.75114580.00.641.615.01702656420182T1.51.1117085.80.652.420.01652506742184T21.5117086.50.693.125.01602406744213T32.2118087.50.724.232.01552307164215T53.7118087.50.736.846.01502157172254T7.55.5118089.50.7310.663.515020575128256T107.5118089.50.741481.015020075142284T1511118090.20.7819.2116.014020080170286T2015118090.20.7825.9145.013520080210324T2518.5118591.70.7930182.513520083228326T3022118591.70.7935.4217.013520083252364T4030118593.00.8347.5290.013520086290365T5037118593.00.8258.3362.513520086318404T6045119093.60.8371435.013520090385405T7555119093.60.8289542.513520090389444T10075119094