GB/T 22264.2-2022 Active

This document specifies the product classification, grading, and compliance of installed digital display ammeters and voltmeters, technical requirements, information, general markings and symbols, inspection rules, and packaging, storage, and transportation. This document applies to newly manufactured installed digital display ammeters and voltmeters used in distribution systems with a rated voltage of less than 750 V DC and 690 V AC, and a nominal frequency of 50 Hz or 60 Hz, for measuring current and voltage. It also applies to the digital display portion of ammeters or voltmeters with analog/digital dual displays. This document does not apply to: -- ammeters and voltmeters with only direct-acting analog indicators; -- portable digital display ammeters and voltmeters; -- ammeters and voltmeters for special purposes that are subject to separate national standards (or industry standards).