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ISO 12759-2:2019

Fans -- Efficiency classification for fans -- Part 2: Standard losses for drive components

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Kehtiv alates 20.03.2019
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20.03.2019
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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.
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EVS-EN ISO 12759:2015

Fans - Efficiency classification for fans (ISO 12759:2010, including Amd 1:2013)
Kehtetu alates 16.12.2019
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ISO 12759-3:2019

Fans -- Efficiency classification for fans -- Part 3: Fans without drives at maximum operating speed
Uusim versioon Kehtiv alates 11.03.2019