ISO 13373-9规定了对各类电动机进行振动诊断时应考虑的程序。ISO 13373-9涵盖的四种电机类型为鼠笼式感应电机、绕线转子感应电机、凸极电机和直流电机。 注:前两种类型在ISO 20958中定义。 ISO 13373-9主要适用于功率超过15 kW的电机。 ISO 13373-9旨在供状态监测从业者、工程师和技术人员使用，并提供了一种基于振动的实用逐步故障诊断方法。此外，它还提供了一系列机器和部件类型及其相关故障症状的示例。 在某些情况下，ISO 13373-9中介绍的程序可应用于其他类型的电机，如发电机，但ISO 13373-9中不包括与此类电机相关的其他特定技术。 使用非振动量（如电压和电流）来识别和分析电机中与振动相关的故障不在ISO 13373-9的范围内。

ISO 13373-9 specifies procedures to be considered when carrying out vibration diagnostics of various types of electric motors. The four motor types covered by ISO 13373-9 are squirrel-cage induction, wound-rotor induction, salient-pole and DC motors. NOTE The first two types are defined in ISO 20958. ISO 13373-9 is mostly applicable to motors with power above 15 kW. ISO 13373-9 is intended to be used by condition monitoring practitioners, engineers and technicians and provides a practical step-by-step vibration-based approach to fault diagnosis. In addition, it gives a number of examples for a range of machine and component types and their associated fault symptoms. The procedures presented in ISO 13373-9 can, in some cases, be applied to other types of electrical machines, such as generators, but there can be other specific techniques associated with such machines that are not included in ISO 13373-9. The use of non-vibration quantities, such as voltage and current, to identify and analyse vibration-related faults in electric motors is outside the scope of ISO 13373-9.