GB/T 43080.4-2025 Active
GB/T 43080.4-2025 Fans—Efficiency classification for fans—Part 4:Driven fans at maximum operating speed
Abstract
This document establishes a classification system for the efficiency levels of electric motor-driven ventilators with a rated power of 0.125 kW or more, which is only applicable to ventilators equipped with drive units and not to the systems in which the ventilators are installed (including the final products of the original equipment manufacturers, such as box fans, roof fans, or ventilation systems). This document specifies multiple different procedures for classifying the efficiency levels or minimum efficiency limits (MEL) of ventilators, which can be found in the following documents: — ISO 12759-3; — This document; — ISO 12759-5; — ISO 12759-6. These efficiency levels and MELs cannot be compared with each other.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 43080.4-2025 |
| CCS | Compressors and fans |
| ICS | Ventilators, fans, and air conditioners |
| Implement Date | 2026-05-01 |