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ISO 12759-4:2019

Fans -- Efficiency classification for fans -- Part 4: Driven fans at maximum operating speed

General information

Valid from 05.11.2019
Directives or regulations
None

Standard history

Status
Date
Type
Name
05.11.2019
Main
25.03.2013
Amendment
03.12.2010
Main
This document establishes a system for the classification of fan efficiency for all fan types driven by motors of nominal rating 0,125 kW and above. It applies to driven fans only, but not to the system (finished original equipment manufacturer's product, for example box fans and roof fans or ventilation system) in which they might be installed. This document describes a number of different procedures to classify the efficiency of a fan or to apply a minimum efficiency limit (MEL). Those procedures are described in:
-  ISO 12759-3;
-  this document (ISO 12759-4);
-  ISO 12759-5;
-  ISO 12759-6.
There is no method described to compare these classifications and MEL's.

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