Fan System Efficiency and Fan System Input Power Calculation
|Publication Date:||1 January 2017|
The scope of this standard includes all electric motor driven fan systems that use a specific combination of components as defined below:
1. Fan airflow performance tested in accordance with ANSI/AMCA Standard 210  ANSI/AMCA Standard 230 , ANSI/AMCA Standard 260  or ISO Standard 5801  or rated in accordance with AMCA Publication 211 .
2. Polyphase induction motors within the scope of EPCA , IEC 60034-30-1 , or GB 18613 . Other types of motors are explicitly excluded.
3. Pulse-width modulated variable frequency drives (VFDs). 4. Mechanical power transmissions that use V-belts, synchronous belts, or flexible couplings.
This standard provides a method to estimate the input power and overall efficiency of an extended fan system.
An extended fan system is composed of a fan and an electric motor but may also include a transmission and a motor controller. While direct measurement of fan system performance is preferred, the large number of fan system configurations often makes testing impractical. This standard offers a standardized method to estimate fan system performance by modeling commonly used components. Calculations reported in accordance with this standard offers fan users a tool to compare alternative fan system configurations in a consistent and uniform manner.
This document does not provide selection guidance. Users must assure that selected components have sufficient capacity and are configured to produce the desired results.