首頁 > 標(biāo)準(zhǔn)下載>ISO 12759-4-2019 風(fēng)扇--風(fēng)扇的效率分類--第4部分:以最高運(yùn)行速度驅(qū)動風(fēng)扇 Fans — Efficiency classification for fans — Part 4: Driven fans at maximum operating speed免費(fèi)下載

ISO 12759-4-2019 風(fēng)扇--風(fēng)扇的效率分類--第4部分:以最高運(yùn)行速度驅(qū)動風(fēng)扇 Fans — Efficiency classification for fans — Part 4: Driven fans at maximum operating speed

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標(biāo)準(zhǔn)編號：ISO 12759-4-2019
標(biāo)準(zhǔn)狀態(tài)：現(xiàn)行
更新時間：2024-01-30
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標(biāo)準(zhǔn)簡介

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.st edition 2019-10 Fans？—？Efficiency？classification？for？ fans — Part 4: Driven？fans？at？maximum？operating？ speed Ventilateurs？—？Classification？du？rendement？des？ventilateurs？— Partie？4:？Ventilateurs？entra？nés？à？vitesse？maximale？de？fonctionnement Reference number ISO 12759-4:2019(E) ？ ISO 2019 ISO 12759-4:2019(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2019 Al