标准号:IEC 61557-9-2009 已废止
英文名称:Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems
标准组织
CCS分类
ICS分类
发布日期
实施日期
废止日期