This part of GB/T 26216 specifies the rated value, design, structure and test of electronic DC current measuring devices for DC transmission with voltage levels of ±800kV and below. This part applies to the electronic DC current measurement devices installed on the DC-level busbar of the DC power transmission system with a voltage level of ±800kV and below, the midpoint (if applicable) busbar of the double-twelve pulse converter valve group, and the neutral busbar.