Seminar 68 -- Mechanical Equipment Individual Current Harmonics and Impact on the Building’s Electrical Load ✓ Most Recent

This product is a zip file that contains files that consist of PowerPoint slides synchronized with the audio-recording of the speaker, PDF files of the slides, and audio only (mp3 format) as noted.

The HVAC&R industry is trending towards variable speed technology such as electronically commutated motors (ECMs), variable frequency drives (VFD) motor solutions, variable speed compressors, chillers, pumps, fans, and variable refrigerant flow systems (VRF). Building owners and engineers are requesting HVAC&R equipment to comply with IEEE 519. The goal of thisprogram is to help our participants avoid harmonics overfiltering and underfiltering. Both excessive and minimal harmonic filtration scenarios can cause issues with electrical and HVAC&R equipment. With industry demands of high energy standards (Title 24, ASHRAE 90.1, IECC), harmonics has emerged as an increasingly critical topic in the building industry.

1. Understanding Induction Motors, VFDs, and ECMs
   Marco Cabibbo, P.E., P2S, Long Beach, CA
2. Facility Harmonics
   Nicolas S. Rosner, P.E., Member, Eaton, City of Industry, CA
3. Applying Harmonic Analysis to Power Line Distortion
   Ken Fonstad, Member, Retired, Franklin, IN