标准摘要
[中文适用范围]： 适用于具有模拟指示的瓦特表和无功电压表以及与其一起使用的不可互换附件。第四版取消并取代了第三版。 [外文原描述]： Applies to direct acting indicating wattmeters and varmeters having an analogue display, and to non-interchangeable accessories used with wattmeters and varmeters.
英文名称Direct acting indicating analogue electrical measuring instruments and their accessories. Part 3: Special requirements for wattmeters and varmeters