UNSPSC 39121033: Potential transformer

A potential transformer (PT) is a type of instrument transformer designed to provide a voltage in its secondary winding proportional to the voltage in its primary. They are commonly used in metering and protective relaying in the electrical power industry where they facilitate the safe measurement of voltages

UNSPSC 39121033 Potential transformer is a Commodity code, and state and local governments procure this specifically as step-up transformers, pad-mounted distribution transformers, and high-voltage substation units in water utility upgrades, electrical distribution infrastructure replacement, and utility system modernization projects. Recent solicitations show concrete demand for equipment ranging from 75 kVA to 50 MVA units across municipal utilities, transit authorities, and state institutions. Issuing bodies include municipal utilities (City of Cumming Georgia, City of Austin, City of Albany Georgia), municipal power cooperatives (Lubbock Power & Light), county governments (San Mateo County Parks Department), state agencies (Texas Department of Criminal Justice), and higher-education institutions (University of Mississippi, Texas State Technical College). A subset of opportunities also involve associated switchgear, control systems, and interconnection work, indicating that procurement under this code frequently bundles transformer supply with installation, testing, and commissioning services requiring design drawings, site coordination, and operator training.

Recent activity concentrates in Texas, Georgia, and California. The City of Cumming Georgia is procuring a 3,750 kVA step-up transformer for a potable water production facility (RFP, proposals due August 7, 2026); Lubbock Power & Light is requesting a 50 MVA three-phase power transformer for Oliver Substation (RFP, due August 5, 2026); the City of Austin is establishing an as-needed supply contract for 75–2,500 kVA three-phase pad-mounted distribution transformers with an estimated annual requirement of 285 units across 20 configurations (RFP, due April 21, 2026); and the Texas Department of Criminal Justice is installing two 2,500 kVA transformers as part of a two-phase electrical system replacement at Memorial Unit in Rosharon (RFP, due June 8, 2026, estimated value $6.8 million). The City of Albany Georgia recently bid twelve 100 kVA and three 167 kVA pad-mount units (Bid, due June 8, 2026). Specifications across these solicitations consistently require ANSI C57 compliance, Department of Energy efficiency ratings, delivery lead times ranging from one to fifty-five weeks, and manufacturer-certified equipment delivered with comprehensive testing, documentation, and warranty coverage.