标准摘要
[中文适用范围]： IEC 61558-2-4:2021 处理的是用于一般应用的隔离变压器以及包含隔离变压器的电源供电装置的安全问题。本文档也涵盖包含电子电路的变压器。除非另有说明，术语“变压器”泛指用于一般应用的隔离变压器以及包含隔离变压器的用于一般应用的电源供电装置。对于线性电源供电装置，本文档适用；对于开关模式电源供电装置，适用 IEC 61558-2-16。本文档适用于固定式或便携式、单相或多相、风冷（自然或强制）的独立或配套的干式变压器。绕组可以是封装的或非封装的。额定供电电压不超过 1000 V AC，额定供电频率和内部工作频率不超过 500 Hz。额定输出不超过：单相变压器 25 kVA；多相变压器 40 kVA。本文档适用于额定输出无限制的情况，但需经采购方和制造商同意。空载输出电压或额定输出电压超过 50 V AC 或 120 V 无纹波 DC，且（如适用）不超过 500 V AC 或 708 V 无纹波 DC。空载输出电压和额定输出电压在特殊应用中可达 1000 V AC 或 1415 V 无纹波 DC。本文档不适用于连接到变压器输入端子和输出端子以及意图连接到这些端子的外部电路及其组件。 [外文原描述]： IEC 61558-2-4:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61558-2-4:2021 deals with the safety of isolating transformers for general applications and power supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this document. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - adjustment of structure and references in accordance with IEC 61558-1:2017; - description of constructions moved to IEC 61558-1:2017; - a new symbol for power supply unit with linearly regulated output voltage. It has the status of a group safety publication in accordance with IEC Guide 104. This International Standard is to be used in conjunction with IEC 61558-1:2017 .
英文名称Safety of transformers, reactors, power supply units and combinations thereof - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications