UNSPSC 39122006: Variable speed drive

The basic function of a variable speed drive (VSD) is to control the flow of energy from the mains to the process. Variable speed drives sit between the electrical supply and the motor. Power from the electrical supply goes into a drive and the drive then regulates the power that is fed to the motor.

UNSPSC 39122006 Variable speed drive (Commodity) covers the supply, repair, and maintenance of variable frequency drives (VFDs) procured by state and local governments for water treatment, wastewater management, airport facilities, and general building infrastructure. State and local buyers solicit replacement parts, repairs, refurbishment, programming, and new VFD installations from authorized distributors and specialized service contractors. The issuing bodies include municipal water and wastewater departments, state environmental agencies, county governments, and airport authorities. Solicitations range from single-source parts procurement for specific manufacturer brands (such as Yaskawa) to competitive bids and RFPs for multi-year service contracts covering dozens of drives from multiple OEMs including Allen Bradley, Eaton, Siemens, Schneider Electric, ABB, and Danfoss.

Recent activity spans Florida, Georgia, Arizona, and Washington. The City of Tampa Wastewater Department posted a single-source intent (26X01888, response due September 30, 2026) for Yaskawa VFD replacement parts and repairs. The City of Phoenix Water Services Department issued an IFB (IFB-25-0749, due May 28, 2025) for a five-year VFD supply contract from ten named manufacturers. The Greater Orlando Aviation Authority released an RFP (26-414, due March 31, 2026) seeking VFD repair and replacement services for approximately 368 drives across multiple airport facilities, requiring ten years of contractor experience and 24/7 emergency response capability. The Washington State Department of Ecology posted an IFB (IFB2618ADM, due July 20, 2026) for electrical maintenance services at its Lacey headquarters that includes annual preventative maintenance on 36 variable frequency drives as part of a broader facility electrical contract with a set-aside for small businesses or veteran-owned businesses. Sourcing patterns show preference for OEM-authorized dealers on parts and repairs, with larger jurisdictions favoring multi-year service agreements structured around maintenance schedules, emergency response guarantees, and competitive pricing across standardized labor and materials line items.