The scope of this standard includes all electric motor-driven fan systems that use a specific combination of components defined below:
- Fan airflow performance
- Polyphase induction motors
- Pulse-width modulated variable frequency drives (VFDs)
- Mechanical power transmissions that use V-belts, synchronous belts, or flexible couplings.
Submit your comments:
Whom Do I Contact?Air Movement and Control Association International, Inc.
Comments:
Steve Lawrence on 2019-09-05 19:18:00
Section/Figure/Table No.: Section 4.1.3.1
Type of Comment: General
Comment (justification):
Halfway down the page, the sentence below the Nm equation, NB is referred to as the nominal motor efficiency, when it should be NR.
Proposed Change:
Revise NB to NR.
Steve Lawrence on 2019-09-05 13:00:00
Section/Figure/Table No.: Annex E.2
Type of Comment: General
Comment (justification):
In the final equation for calculating Wc, the percentage used in the equation for Nmc is the Lc percentage.
Proposed Change:
The percentage should be 0.856, not 0.888.
Armin Hauer on 2019-01-31 15:30:00
TEFC 8-pole column is incorrect. It's using the minimum column from NMEA MG1 by mistake
Armin Hauer on 2019-01-31 11:47:00
EPCA affected motors in 1975; now it's EISA (EISA is mentioned correctly in another 4 places)
Armin Hauer on 2018-12-03 16:30:00
typo eta R instead of eta B
Armin Hauer on 2018-12-03 11:46:09
typo
Armin Hauer on 2018-12-03 11:45:43
missing word