ISO-12759-2 › Fans - Efficiency classification for fans - Part 2: Standard losses for drive components

ISO-12759-2 - 1ST EDITION - CURRENT


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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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23.120 (Ventilators. Fans. Air-conditioners Marine ventilation and air-conditioning systems, see 47.020.90 Mining ventilation and air-conditioning systems, see 73.100.20 Ventilation and air-conditioning in buildings, see 91.140.30)

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Document Number

ISO 12759-2:2019

Revision Level

1ST EDITION

Status

Current

Publication Date

March 1, 2019

Committee Number

ISO/TC 117