UL Certified Transformers
UL and cUL certification files for North American transformer projects, especially liquid-filled three-phase pad-mounted transformers supplied against model-specific scope.
Core supplier files identify UL-US-26108178-0 and UL-CA-2679433-0 under report file E552154-20260311. The US certificate covers liquid-filled three-phase pad-mounted transformer samples over 600V under IEEE C57.12.00 and IEEE C57.12.28, with a documented model range of 45 to 5000kVA, 26.0 to 36.0kV HV, and 0.12 to 1.5kV LV. The Canada certificate covers liquid-filled three-phase pad-mounted transformer samples over 750V certified for Canada under CSA C227.4, with a documented model range of 75 to 3000kVA, 26.0 to 36.0kV HV, and 0.12 to 1.5kV LV. Each quotation still needs model, accessories, labeling, inspection, and destination requirements checked before release.
Published evidence for international transformer projects
These previews are rendered at high resolution from original documents. Registration identity, address, traceability numbers, and signatures are redacted in the public version; complete project files are available during project qualification. Documents that require periodic renewal are still included in the project file set, while public pages show type, standard, scope, and market use instead of fixed document dates.
Liquid-filled three-phase pad-mounted transformer evaluated to the standards shown in the document.
UL-US-26108178-0 · IEEE C57.12.00/28 · 45-5000kVAView clear preview →
Liquid-filled three-phase pad-mounted transformer certification file for the Canadian market.
UL-CA-2679433-0 · CSA C227.4 · 75-3000kVAView clear preview →
Published portfolio for applicable 10kV and 35kV distribution transformers and compact substations, including IEC, UL, TUV, CE, KEMA, GOST, and CSA files.
UL/cUL · CE/TUV · KEMA · GOST · CSA/IECView clear preview →
Test scope and acceptance basis
UL and cUL certification files for North American transformer projects, especially liquid-filled three-phase pad-mounted transformers supplied against model-specific scope.
Core supplier files identify UL-US-26108178-0 and UL-CA-2679433-0 under report file E552154-20260311. The US certificate covers liquid-filled three-phase pad-mounted transformer samples over 600V under IEEE C57.12.00 and IEEE C57.12.28, with a documented model range of 45 to 5000kVA, 26.0 to 36.0kV HV, and 0.12 to 1.5kV LV. The Canada certificate covers liquid-filled three-phase pad-mounted transformer samples over 750V certified for Canada under CSA C227.4, with a documented model range of 75 to 3000kVA, 26.0 to 36.0kV HV, and 0.12 to 1.5kV LV. Each quotation still needs model, accessories, labeling, inspection, and destination requirements checked before release.
Certificate file, drawings, nameplate, routine tests, inspection records, labels, shipment files, and final dossier.
Products Supported by UL Certified Transformers
The test scope and quality files must match the actual product, rated data, applicable standard, and confirmed order specification.
How the work is controlled
Identify the authority, utility, inspector, or customer requirement and the exact UL, cUL, IEEE, CSA, listing, or field-evaluation route expected.
Match voltage class, kVA/MVA rating, fluid-filled construction, pad-mounted enclosure, cabinet interfaces, components, labels, accessories, and intended installation.
Use UL-US-26108178-0 for the documented US route and UL-CA-2679433-0 for the documented Canada route, because capacity scope and applicable standards are not identical.
Align the certificate file with drawings, nameplate, bill of materials, test reports, labels, inspection points, and approved deviations.
Provide the applicable copy and supporting records in the required submission format before shipment.
Project inputs and acceptance basis
| Ordered model | Transformer type, rating, voltage, phases, frequency, insulating liquid, pad-mounted enclosure, cabinet arrangement, accessories, and destination. |
|---|---|
| UL or cUL requirement | Named standard, listing or field-evaluation expectation, authority, labels, inspection, document format, and whether the project is US or Canada. |
| Construction match | Components, interfaces, protection, cabinet, wiring, terminals, materials, accessories, approved options, and label content. |
| Final acceptance | Certificate file, drawings, nameplate, routine tests, inspection records, labels, shipment files, and final dossier. |
Available project records
Technical questions: UL Certified Transformers
Does UL Certified Transformers apply to every transformer?
Applicability depends on product type, rating, applicable standard, and the order specification. Routine tests normally apply to each unit; type or special tests are confirmed by project.
What is the acceptance basis for UL Certified Transformers?
Acceptance should use the approved data sheet, applicable standard and edition, guaranteed values, tolerances, agreed deviations, procedure, and order requirements.
What should be confirmed before the work starts?
Transformer type, rating, voltage, phases, frequency, insulating liquid, pad-mounted enclosure, cabinet arrangement, accessories, and destination.
What test or quality records can be produced?
UL-US-26108178-0 and UL-CA-2679433-0 certificate files, Report file E552154-20260311 and certificate-scope record, US and Canada covered-model schedule, Approved construction drawings and nameplate files, Routine, inspection, and label records, Final North America compliance dossier
Discuss your transformer project
Send the available specification, drawing, single-line diagram, test requirement, quantity, destination, and target schedule. We will confirm the applicable equipment and document scope.