【国家标准】 交流电测量设备　特殊要求　第4部分：经电子互感器接入的静止式电能表

This part of GB/T 17215.3 specifies the terms and definitions, classifications, technical requirements, accuracy classes and test methods of static meters connected via electronic transformer (hereinafter referred to as “meters”).
This document is only applicable to newly manufactured meters which have small (signal) analog input and are installed in the networks with a reference frequency of 50Hz or 60Hz to measure the a.c.electric energy and applies to their type tests only.
This document is applicable to the meters consisting of elements such as measuring unit and display enclosed together in a meter case.
This document may be used as reference for meters that have a small (signal) analog input only in the current circuit.
This document is not applicable to meters with digital inputs.
NOTE　The transformers intended to connected to the meter refer to GB/T 20840.7-2007, GB/T 200840.8-2007 and DL/T 1155-2012.