IEC 60664-1:2020 低压供电系统内设备的绝缘配合第1部分:原理、要求和试验
标准编号：IEC 60664-1:2020
中文名称：低压供电系统内设备的绝缘配合第1部分:原理、要求和试验
英文名称：Insulation coordination for equipment within low-voltage supply systems - Part 1: Principles, requirements and tests
发布日期：2020-05-26
标准范围
IEC 60664-1:20 20涉及连接到低压供电系统的额定电压高达AC 1 000 V或DC 1 500 V的设备的绝缘协调。本文件适用于高达30 kHz的频率。它适用于在海拔2 000 m以下使用的设备，并为在更高海拔使用提供指导。它为技术委员会确定间隙、爬电距离和固体绝缘标准提供了要求。它包括关于绝缘协调的电气测试方法。本文件中规定的最小间隙不适用于存在电离气体的情况。有关技术委员会可酌情规定此类情况的特殊要求。本文档不涉及距离:-通过液体绝缘；-通过空气以外的气体；-通过压缩空气。与上一版相比，此版本包括以下重大技术变更:更新范围、第2条和第3条，在表中添加1 500 V DC，第4及5条的新架构，在附件G中增加一个清除流程图，增加附录H，其中包含爬电距离流程图，新表F.10中距离高度修正的更新。根据IEC指南104，它具有基本安全出版物的地位。
IEC 60664-1:2020 deals with insulation coordination for equipment having a rated voltage up to AC 1 000 V or DC 1 500 V connected to low-voltage supply systems. This document applies to frequencies up to 30 kHz. It applies to equipment for use up to 2 000 m above sea level and provides guidance for use at higher altitudes. It provides requirements for technical committees to determine clearances, creepage distances and criteria for solid insulation. It includes methods of electrical testing with respect to insulation coordination. The minimum clearances specified in this document do not apply where ionized gases are present. Special requirements for such situations can be specified at the discretion of the relevant technical committee. This document does not deal with distances:
– through liquid insulation;
– through gases other than air;
– through compressed air.
This edition includes the following significant technical changes with respect to the previous edition:
- update of the Scope, Clauses 2 and 3,
- addition of 1 500 V DC into tables,
- new structure for Clauses 4 and 5,
- addition of Annex G with a flowchart for clearances,
- addition of Annex H with a flowchart for creepage distances,
- update of distances altitude correction in a new Table F.10.
标准预览图
