UNSPSC 39121037: Limiting transformer

Transformer used when boosting or stepping down voltage for application in households, offices or others, and used for small capacity devices.

UNSPSC 39121037 Limiting transformer is a Commodity code capturing the procurement of current-limiting and protective transformer equipment by state and local governments for electrical infrastructure projects ranging from water utility facilities to transit systems to correctional institutions. Recent opportunities show state and local buyers acquiring limiting transformers as components within larger electrical system installations—not as standalone commodity purchases—with the transformers integrated into switchgear assemblies, distribution upgrades, and substation projects that demand coordinated engineering and installation. The issuing bodies span city utilities (Cumming, Georgia; Lubbock Power & Light), county and municipal power authorities, school districts, and state agencies; water and wastewater departments appear most active, along with criminal justice facilities and public universities performing infrastructure renewal. Work being solicited includes step-up and step-down transformer procurement paired with switchgear installation, substation retrofits, and electrical distribution loop modernization, typically as turnkey projects with design, permitting, factory acceptance testing, and commissioning requirements.

Geographic activity concentrates in Texas, Georgia, and Florida, with recent opportunities posted across municipal utilities in those states and additional activity in Mississippi and California. Representative recent solicitations include the City of Cumming's PWPF Generator and Switchgear Project (RFP with proposals due August 7, 2026) requiring a 3,750 kVA step-up transformer as part of a 2,500 kW diesel generator installation at the Cumming Potable Water Production Facility; Lubbock Power & Light's 50 MVA transformer procurement for Oliver Substation (RFP #7133-26-ELD, responses due August 5, 2026) specifying a 30/40/50/56.2 MVA, 115-12.47 kV transformer with ANSI C57.12 compliance and delivery by April 3, 2028; and the City of Fairburn's Ferndale Phase III Underground Power project (IFB 26-016, bids due July 22, 2026) including pad-mount transformers, primary cable, and secondary distribution on a 12.47 kV loop system. Procurement typically flows through competitive sealed proposals or informal bids with proposal bonds, performance bonds, and insurance requirements; many buyers impose delivery milestones with liquidated damages, mandate professional engineering sealed drawings, and require factory acceptance testing and on-site commissioning prior to final payment.