IEC 60393-4:20 23适用于单匝旋转功率电位器绕线技术。搪瓷，水泥，模制，封闭。 本规范适用于标称耗散超过10W的旋转电位器，其电阻元件由导线或缠绕带组成。本规范规定的所有电位计都是滑块驱动的，没有减速。它们小于360°的行程受到停止的限制。 本文件规定了优选的等级和特性，并从IEC 60393-1中选择了适当的质量评估程序、测试和测量方法。它提供了这类电位器的一般性能要求。 本文档给出了最低性能要求和测试严重性。附件A列出了本文件条款中使用的字母和符号。与上一版相比，此版本包括以下重大技术变更: a)文件结构的组织遵循TC 40中确定的新的部分规范结构； b）关于评估级别EZ和FZ（零不合格）的信息已被修订。

IEC 60393-4:2023 is applicable to single-turn rotary power potentiometers wire-wound technology. Enamelled, cemented, moulded, enclosed.
This specification is applicable to rotary potentiometers with nominal dissipation in excess of 10 W, the resistive element of which consists of a wire or a wound tape. All the potentiometers specified by this specification are slider-driven without reduction. Their stroke less than 360° is limited by stops.
This document specifies preferred ratings and characteristics and selects from IEC 60393-1, appropriate quality assessment procedures, tests and measuring methods. It provides general performance requirements for this type of potentiometer.
This document gives the minimum performance requirements and test severities. Annex A lists the letters and symbols used in the clauses of this document.
This edition includes the following significant technical changes with respect to the previous edition:
a) the document structure has been organized to follow new sectional specification structure decided in TC 40;
b) the information on the assessment level EZ and FZ (zero nonconforming) has been revised.