GB 21518-2022 Active
GB 21518-2022 Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors
Abstract
This document specifies the energy efficiency grades, energy efficiency limits, sampling, testing, and calculation methods for contactors (hereinafter referred to as "contactors").
This document applies to three-pole electromechanical, direct-acting integral contactors with a rated frequency of 50 Hz, a rated working voltage of 1,000 V or less in the main circuit, a rated working current of 6 A to 630 A, and a rated control power supply voltage of 400 V AC or less. They are used in application category AC3.
This document does not apply to contactors equipped with external energy-saving devices, contactors for household and similar purposes, or semiconductor contactors (solid-state contactors).
Note: In this document, "direct-acting" refers to products with both a direct-acting contact system and an electromagnetic system.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB 21518-2022 |
| CCS | Technical management |
| ICS | Integrated Energy and Heat Transfer Engineering |
| Implement Date | 2024-01-01 |