标准摘要
[中文适用范围]: 除IEC 60077-2的一般要求外,IEC 60077的这一部分给出了用于交流电路的断路器的规则,这些断路器的主触点连接到交流架空接触线;这些电路的标称电压符合IEC 60850的规定。 本文件与IEC 60077-2一起具体说明了: a) 断路器的特性; b) 断路器必须符合的服务条件,包括: - 正常运行和性能; - 短路运行和性能; - 介电性能; c) 用于确认组件在服务条件下符合特性的测试以及这些测试所采用的方法; d) 应在断路器上标记或随断路器提供的信息。 注1 本文件中涉及的断路器可以配备在预定条件下自动打开的装置,例如欠压和电流方向反转。本文件不涉及在这种预定条件下操作的验证。 注2 将电子组件或电子子组件纳入电气组件现在是常见做法。尽管本文件不适用于电子设备,但电子组件的存在并不构成将这些电气组件排除在范围之外的理由。 断路器中的电子子组件应符合电子相关标准(IEC 60571)。 注3 经用户和制造商同意,这些规则中的某些可用于安装在非铁路车辆上的电气组件,如矿用机车、无轨电车等。在这种情况下,可能需要特定的附加要求。 本文件不涵盖符合IEC 62271-100的工业断路器。为确保满意运行,本文件仅用于规定铁路车辆的特定要求。在这种情况下,特定文件应说明工业断路器必须符合的附加要求,例如: - 要么进行调整(例如控制电压、环境条件等); - 要么安装和使用以避免承受特定铁路车辆条件; - 要么进行额外测试以证明这些组件能够满意地承受铁路车辆条件。 [外文原描述]: IEC 60077-4:2019 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 60077-4:2019 gives rules for AC circuit-breakers, the main contacts of which are connected to AC overhead contact lines; the nominal voltage of these circuits being in accordance with IEC 60850. This document, together with IEC 60077-2, states specifically: a) the characteristics of the circuit-breakers; b) the service conditions with which circuit-breakers comply with reference to: - operation and behaviour in normal service; - operation and behaviour in short-circuit; - dielectric properties; c) the tests for confirming the compliance of the components with the characteristics under the service conditions and the methods to be adopted for these tests d). the information to be marked on, or given with the circuit-breaker. This second edition cancels and replaces the first edition, issued in 2003. This edition includes the following main technical changes with regard to the previous edition: a) standard values of transient recovery voltages and test procedure are reviewed; b) procedure of verification of temperature rise is changed; c) air-tightness test as type test, insulation resistance measurement are added
英文名称Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers