GB/T 43080.4-2025 Active National standards

GB/T 43080.4-2025 Fans—Efficiency classification for fans—Part 4:Driven fans at maximum operating speed

Publish Date: 2025-10-31 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 43080.4-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Compressors and fans

ICS Name: Ventilators, fans, and air conditioners

Publish Date: 2025-10-31

Implement Date: 2026-05-01

Pages: 28 pages

Scope

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.