Abstract
PreviewThis 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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Status: PublishedPublication date: 2019-03
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Edition: 1Number of pages: 21
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- ICS :
- 23.120 Ventilators. Fans. Air-conditioners
Buy this standard
| Format | Language | |
|---|---|---|
| std 1 124 | PDF + ePub | |
| std 2 124 | Paper |
- CHF124
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