GB/T 22264.4-2022 Active
GB/T 22264.4-2022 Mounted digital display electric measuring instruments—Part 4: Special requirements for frequency meters
Abstract
This document specifies the product classification, grading, and compliance of installed digital display frequency meters, technical requirements, information, general logos and symbols, inspection rules, and packaging, storage, and transportation. This document applies to newly manufactured installed digital display frequency meters used to measure frequency in AC distribution systems below 690 V with a nominal frequency of 50 Hz or 60 Hz, as well as to the digital display portion of frequency meters with analog/digital dual displays. This document does not apply to: -- Frequency meters with only direct-acting analog indicators; -- Portable digital display frequency meters; -- Frequency meters for special purposes that are subject to separate national standards (or industry standards).
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 22264.4-2022 |
| CCS | Digital display instrument |
| ICS | The measurement of electrical and magnetic quantities |
| Implement Date | 2023-07-01 |