Outdoor and High-Duty Distribution
Oil-Immersed Transformers
Oil-immersed transformer buyers need to compare capacity, voltage, cooling, accessories, losses, testing and site safety before placing a purchase order.

Procurement use
Oil-immersed transformers are reviewed for outdoor distribution, substation and industrial applications where oil cooling, outdoor installation and accessory configuration are part of the project scope.
Technical agreement focus
Oil type, tank structure, cooling, bushings, tap changer, monitoring accessories, paint, packing and testing should be confirmed during quotation review and recorded in the technical agreement.
Quotation data to prepare
Electrical data
Rated capacity, primary and secondary voltage, phase, frequency and vector group if known.
Installation condition
Indoor, outdoor, substation, industrial yard, electrical room or compact cabinet site.
Configuration scope
Cooling, tap changer, accessories, monitoring, protection and spare parts requirements.
Commercial scope
Quantity, destination country, packing, documentation language and schedule expectation.
Selection points
Buyer questions
What details affect oil-immersed transformer quotation?
Capacity, voltage, cooling, accessories, loss target, testing requirement, oil type, tank structure and destination standard all affect quotation review.
Can accessories be included in the same quotation?
Yes. Accessories such as tap changer, gauges, relays, fans or monitoring devices should be listed in the RFQ when required.
Are final loss values published on this page?
No. Final loss values and test basis must be confirmed from project specifications, quotation documents and the technical agreement.
Related transformer pages
Related application and resources
Application Scenario
Utility and Industrial Power Distribution
A typical application path for buyers comparing transformer types by site, voltage, capacity, standard and quotation requirements.
Buyer Guide
Transformer Selection Guide
A practical RFQ guide for comparing transformer categories and preparing quotation details.