Approved Work Item
ISO/AWI 12759-2
Fans — Efficiency classification for fans — Part 2: Standard losses for drive components
Reference number
ISO/AWI 12759-2
Edition 2
© ISO 2025
Approved Work Item
Under development
A working group has prepared a draft.
Will replace ISO 12759-2:2019

Abstract

This document establishes a classification for fan efficiency. It applies to all electric-motor-driven fan systems that utilize a specific combination of components as defined below:

a) fan airflow performance determined in accordance with an accepted performance standard;

b) polyphase induction motors with nominal motor efficiency specified in this document;

NOTE 1 Other types of motors are explicitly excluded.

c) pulse-width modulated variable frequency drives (VFDs) for use with single motors;

NOTE 2 Single VFDs that service multiple, parallel fan motors are excluded.

d) mechanical power transmissions that utilize V-belts, flat belts, cog belts or couplings.

General information

  • Status
     : Under development
    Stage
    : New project registered in TC/SC work programme [20.00]
  • Edition
     : 2
  • Technical Committee :
    ISO/TC 117
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

13
Climate Action
9
Industry, Innovation and Infrastructure
3
Good Health and Well-being
7
Affordable and Clean Energy

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