scope:

This ETL provides guidance and recommendations regarding energy-efficient motors and ASDs. The guidance addresses energy efficiency analysis and equipment design options. 

This ETL relies on existing industry information and analysis tools. MotorMaster+, a software program for motor analysis, is discussed in detail because of its wide industry acceptance and ease of use. ASD Calculator for ASD analysis is also discussed. 

 Electrical protection associated with energy-efficient motors and ASDs is described in detail because of the unique protection needs associated with this equipment.

Purpose. This ETL provides users with application, selection, installation, energy analysis, and repair guidance for energy-efficient motors and adjustable-speed drives (ASD) and supersedes Air Force pamphlet (AFPAM) 32-1192, Energy-Efficient Motors and Adjustable-Speed Drives, dated 1 August 2000. The recommendations in this ETL assure a reliable motor system when upgrading to energy-efficient motors or ASDs. Detailed guidance is provided regarding energy efficiency analysis so potential savings from a particular design can be estimated. ASD design options are described in detail to ensure that ASD installations do not degrade electrical systems. This ETL supplements Unified Facilities Criteria (UFC) 3-520-01, Interior Electrical Systems. For general criteria and requirements, refer to UFC 3-520-01, Interior Electrical Systems; Air Force manual (AFMAN) interservice publication (IP) 32-1083_IP, Facilities Engineering - Electrical Interior Facilities; and AFMAN 32-1082_IP, Facilities Engineering - Electrical Exterior Facilities.

Note: Use of the name or mark of a specific manufacturer, commercial product, commodity, or service in this ETL does not imply endorsement by the Air Force.