标准摘要
[中文适用范围]: IEC 60255-27 规定了额定交流电压高达 1000 V 或额定直流电压高达 1500 V 的测量继电器和保护设备的产品安全要求。超过这些限制,IEC 60664-1 适用于确定安全距离、爬电距离和耐压试验电压。本文档规定了旨在最小化火灾风险以及由电击或用户伤害和设备财产危害的基本要求。本文档仅规定产品安全要求;设备的功能性能不在范围内。本文档涵盖了设备在机柜、机架和面板中安装和使用的各种方式。本文档也适用于与测量继电器和保护设备一起使用并一起测试的辅助设备,如分流器、串联电阻、变压器、辅助控制面板、显示装置等。与测量继电器和保护设备一起使用的辅助 equipment,如网络交换机,可能需要符合额外的安全要求。本文档不规定单个设备、电路和组件的实施。本文档适用于设计为至少在以下环境条件下安全的设备:室内使用;海拔高达 2000 m,符合 IEC 60255-1;额定环境温度范围,符合 IEC 60255-1;最大外部相对湿度,符合 IEC 60255-1;辅助供电电压的操作范围,符合 IEC 60255-1;适用的过电压类别;适用环境的污染等级(大多数情况下为污染等级 2)。 [外文原描述]: IEC 60255-27:2023 specifies the product safety requirements for measuring relays and protection equipment having a rated AC voltage up to 1 000 V, or a rated DC voltage up to 1 500 V. This document specifies essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user and property. This document specifies only product safety requirements; functional performance of the equipment is not covered. This document covers all the ways in which the equipment can be mounted and used in cabinets, racks and panels. This document also applies to auxiliary devices such as shunts, series resistors, transformers, auxiliary control panels, display devices, etc., that are used in conjunction with measuring relays and protection equipment and are tested together.
英文名称Measuring relays and protection equipment - Part 27: Product safety requirements