UNSPSC 39121120: Frequency converter

A frequency converter, also known as a power frequency changer, is a device that takes incoming power, normally 50 or 60 Hz and converts it to 400 Hz output power. Different types of power frequency converters exist, specifically, there are both rotary frequency converters and solid state frequency converters.

UNSPSC 39121120 Frequency converter is a Commodity code that does not align with the scope of work reflected in recent state and local opportunities posted under this classification. The most recent solicitations tagged to this code involve airport infrastructure, aviation support services, and procurement conference announcements—including airfield photometric testing, baggage handling system operations, aircraft maintenance equipment purchases, drone procurement, and paratransit vehicle inspections—none of which involve frequency converters or electrical frequency conversion equipment. The code shows no meaningful recent activity in its nominal product category.

State and local activity under this code reflects administrative and event notices rather than substantive procurement of frequency converters. The issuing bodies posting opportunities tagged to this code include airport authorities (Lee County Port Authority, Southwest Florida International Airport), county transit agencies (Sarasota County Transit), state police and public safety departments (Texas Department of Public Safety, Colorado State Patrol, New Hampshire Department of Administrative Services), and county/municipal procurement offices. Geographic spread is concentrated in Florida (Lee County, Sarasota County, Brevard County) and scattered federal-level and state-level agencies across Texas, Colorado, New Hampshire, Kentucky, and North Carolina. Representative recent opportunities include Lee County Port Authority's request for airfield photometric testing services at Southwest Florida International Airport (RFQ 2026115BW, due October 29, 2026), Lee County Port Authority's RFP for comprehensive baggage handling system operations and maintenance (RFP 260073LB, due September 21, 2026), and Sarasota County Transit's RFQ for pre-award and post-delivery Buy America audits for paratransit vehicles (RFQ 2026QQ844, due October 26, 2026). The code appears to be misapplied to these procurement activities, and firms seeking frequency converter opportunities should monitor standard electrical equipment and power distribution UNSPSC families rather than rely on activity under this commodity classification.