交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第12部分：电量测量和监视装置（PMD）

Electrical safety in low voltage distribution systems up to 1000V AC and 1500V DC—Equipment for testing, measuring or monitoring of protective measures—Part 12: Power metering and monitoring devices (PMD)