Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Fan installation, efficiency and tolerance
6 Ratings
Annex A (normative) - Energy efficiency grades for bare shaft
        fans
Annex B (normative) - Calculation method to determine
        efficiency of component parts
Annex C (informative) - Variation of fan performance between
        installation categories
Annex D (informative) - Input power calculation for driven
        fans at design point
Annex E (informative) - Selection of fans for best efficiency
Annex F (informative) - Determination of efficiency grade for
        a driven fan
Annex G (informative) - Explanatory note
Bibliography

Abstract

Specifies a classification of fan efficiency for all fan types driven by motors with an electrical input power range from 0,125 kW to 500 kW.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 117