IEC 61557-8:2007 低压配电系统的电气安全高达1 000 V a.c.和1 500 V直流 - 用于测试 测量或监控保护措施的设备 - 第8部分:IT系统的绝缘监控设备

标准编号:IEC 61557-8:2007

中文名称:低压配电系统的电气安全高达1 000 V a.c.和1 500 V直流 - 用于测试 测量或监控保护措施的设备 - 第8部分:IT系统的绝缘监控设备

英文名称:Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems

发布日期:2007-01-29

标准范围

IEC 61557的本部分规定了绝缘监测装置(IMD)的要求,该装置可永久监测未接地IT交流系统的对地绝缘电阻,适用于标称电压高达1000 V a.c.的电流连接直流电路的IT交流系统。,以及电压高达1500 V直流电的未接地IT直流系统,与测量方法无关。第二版取消并取代1997年出版的第一版。本版为技术修订版。与前一版本相比,进行了以下更改:a) 补充定义;b) 修改一些要求;c) 添加有关操作说明的信息;d) 补充了“型式试验”和“例行试验”部分;e) 表1的修改;f) 增加附件A和B。2007年5月勘误表的内容已包含在本副本中。

This part of IEC 61557 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance to earth of unearthed IT a.c. systems, for IT a.c. systems with galvanically connected d.c. circuits having nominal voltages up to 1 000 V a.c., as well as of unearthed IT d.c. systems with voltages up to 1 500 V d.c. independent from the method of measuring.This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision.The following changes were made with respect to the previous edition:a) definitions complemented;b) revision of some requirements;c) addition of information on operating instructions;d) sections "type tests" and "routine tests" complemented;e) modification of Table 1;f) addition of Annexes A and B.The contents of the corrigendum of May 2007 have been included in this copy.

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