1.1 本指南涵盖了船用低压（1000 VAC或以下）通用、商用、通用、小型和中型交流电动机所需的基本订购信息，最大功率为500马力（含500马力）。 1.2 本指南涵盖的电动机是通用（GP）电动机，用于驱动常见的船用机械，如风扇、鼓风机、离心泵和螺杆泵。 1.3 本指南不适用于订购特殊用途（SP）电机或特定用途电机（例如，低温服务）或国家电气规范（NFPA 70）定义的危险（分类）场所使用的电机。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 选择标准适用于( 1. )新电机和( 2. )更换电机。 4.2 对于新电机或更换电机的选择，本规程根据以下订购数据定义了选择标准。

1.1 This guide covers the required basic ordering information for low voltage (1000 VAC or less) general-purpose, commercial, universal, small-, and medium-sized alternating current electric motors for shipboard use, up to and including motors of 500 hp. 1.2 The electric motors covered by this guide are general-purpose (GP) motors intended to drive common shipboard mechanical machinery such as fans, blowers, centrifugal and screw pumps. 1.3 This guide is not intended to be used to order special-purpose (SP) motors or definite-purpose motors (for example, cryogenic service) or motors for use in hazardous (classified) locations as defined by the National Electrical Code (NFPA 70). 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The selection criteria is to be applied for uses of ( 1 ) new motors and ( 2 ) replacement motors. 4.2 For the selection of new or replacement motors, this practice defines the choice criteria in terms of the ordering data below.