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 is a Commodity code under which state and local governments procure variable frequency drives (VFDs) — electrical devices that control motor speed and torque in HVAC systems, water treatment and distribution infrastructure, wastewater facilities, and building mechanical systems. Recent solicitations show a mix of supply-only purchases (three 500 HP units for a booster pump station, single ABB drive modules for replacement), repair and maintenance services (comprehensive preventative maintenance and emergency response for existing drive portfolios), and integrated troubleshooting and refurbishment work across multi-manufacturer environments. The issuing bodies span water districts, municipal departments (utilities and facilities management), aviation authorities, county public works, and city convention centers — repeat buyers include municipal water services departments and water-focused special-purpose districts. Single-source procurements to existing authorized distributors appear alongside competitive sealed bids and RFPs, with some jurisdictions exercising manufacturer-specific authorization requirements (ABB, Allen-Bradley, Schneider Electric, Siemens, Toshiba, Yaskawa, and others) and others maintaining open competition among factory-authorized dealers.

Recent activity concentrates in California (Eastern Municipal Water District RFBs for supply and on-call mechanical services, Riverside County drive modules), Georgia (DeKalb County IT infrastructure for the Tennis Center, Gwinnett County particle counter installation), Florida (Greater Orlando Aviation Authority RFP for 368 VFD services across airport facilities, City of Tampa single-source procurements to Stan Weaver & Company for ABB products and maintenance), Washington (Department of Ecology electrical maintenance IFB covering 36 variable frequency drives as part of headquarters facility upkeep), and Arizona (City of Phoenix Water Services IFB for a five-year VFD supply and parts contract). The Greater Orlando Aviation Authority RFP 26-414, posted April 24, 2026 with response due March 31, 2026 (note: response date appears to precede posting), seeks repair and replacement services for approximately 368 VFDs across multiple airport facilities with 10 years' minimum contractor experience, 24/7 emergency response capability, and $1 million general liability insurance ($5 million for airfield access). Eastern Municipal Water District RFB 3921, posted March 26, 2026 with bids due April 29, 2026, calls for supply of three new 500 HP, 6-pulse VFDs in NEMA 1 enclosures from factory-authorized dealers of ABB, Allen-Bradley, Schneider Electric, Toshiba, or Yaskawa, with mandatory job walk April 7, 2026, and Board approval anticipated June 3, 2026. Washington State Department of Ecology IFB 2618 ADM, posted June 5, 2026 with bids due July 20, 2026, specifies annual preventative maintenance on 36 variable frequency drives at the Lacey headquarters (322,000 square feet) as part of broader electrical maintenance, with a pre-bid conference June 11, 2026, small business and veteran-owned business preference available (5 points), and estimated contract value of $150,000 or less through June 30, 2027, renewable for up to five additional one-year periods.