美国和加拿大对交流电动机效率的规定.doc

美国和加拿大对交流电动机效率的规定 一、美国 中型电动机 电动机类型界定 General purpose electric motor means any electric motor that is designed in standard ratings with either: 通用电动机意味着按标准额定值设计，并有以下两种情况之一，或者： (1) Standard operating characteristics and mechanical construction for use under usual service conditions, such as those specified in NEMA MG1–2009, paragraph 14.2, “Usual Service Conditions,” (incorporated by reference, see §431.15) and without restriction to a particular application or type of application; or （1）标准运行特性和用于通常使用情况下的机械结构，如在NEMA MG1-2009标准14.2段落“正常使用情况”（参考文献，也参见§431.15）所规定的，不受特别使用情况或者使用类型限制；或者 (2) Standard operating characteristics or standard mechanical construction for use under unusual service conditions, such as those specified in NEMA MG1–2009, paragraph 14.3, “Unusual Service Conditions,” (incorporated by reference, see §431.15) or for a particular type of application, and which can be used in most general purpose applications. （2）标准运行特性或者用于非通常使用情况下的标准机械结构，如在NEMA MG1-2009标准14.3段落“非正常使用情况”（参考文献，也参见§431.15）所规定的，或者针对特别类型使用情况，和可用于多数一般用途使用。 General purpose electric motor (subtype I) means a general purpose electric motor that: 通用电动机（分类型I）意味着具有以下特性的通用电动机： Is a single-speed, induction motor; （1）是单速的感应电动机； (2) Is rated for continuous duty (MG1) operation or for duty type S1 (IEC); （2）是额定为在连续工作制下运行（MG1）或者在S1工作制下运行（IEC）； (3) Contains a squirrel-cage (MG1) or cage (IEC) rotor; （3）包含一个鼠笼式转子（MG1）或者笼式转子（IEC）； (4) Has foot-mounting that may include foot-mounting with flanges or detachable feet; （4）有底脚安装，可包括带法兰或者可卸底脚的底脚安装； (5) Is built in accordance with NEMA T-frame dimensions or their IEC metric equivalents, including a frame size that is between two consecutive NEMA frame sizes or their IEC metric equivalents; （5）依照NEMA T-机座尺寸建造，或者依照相当的IEC公制机座，包括介于两个连续的NEMA机座之间的机座尺寸或者相当的IEC公制机座尺寸； (6) Has performance in accordance with NEMA Design A (MG1) or B (MG1) characteristics or equivalent designs such as IEC Design N (IEC); （6）具有依照NEMA A设计或者B设计的性能特性，或者相当于如IEC N设计（IEC）的性能特性； (7) Operates on polypha