DIN EN 61557-12:2008 交流1000V和直流1500V以下低压配电系统的电气安全.保护措施的测试、测量或监测用设备.第12部分:性能测量和监测装置(PMD)
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 12: Performance measuring and monitoring devices (PMD) (IEC 61557-12:2007); German versi