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Oil-Immersed Transformers for Utility and Industrial Projects
Jinan Qinghe Electric designs and manufactures custom oil-immersed distribution and power transformers for utility networks, industrial facilities, renewable-energy projects and commercial power systems. Each transformer is engineered according to the customer’s electrical parameters, installation environment and applicable project requirements.
Available Configurations
Three-phase and project-specific single-phase designs
Mineral oil or approved alternative insulating liquids
Sealed-tank or conservator construction
ONAN cooling and project-specific cooling arrangements
Copper or aluminum windings
Off-circuit or on-load tap-changing options
Indoor or outdoor configurations with specified corrosion protection
Engineering Parameters
Available ratings, voltage ratios, vector groups, impedance, insulation levels, temperature rise and accessories are confirmed during engineering review. Products can be designed for IEC, IEEE/ANSI and other applicable project specifications. Compliance and certification scope are confirmed for the selected model and destination market.
Quality Control and Testing
Routine tests are performed according to the agreed technical specification. Factory acceptance testing, drawings, datasheets, nameplate details, test records and export documentation can be supplied as required. Optional accessories include liquid level indication, pressure relief, temperature monitoring, pressure-vacuum indication, protection devices and terminal arrangements.
Request a Technical Quotation
For accurate selection and pricing, please provide rated power, primary and secondary voltage, phase, frequency, winding connection, impedance, installation environment, applicable standard, quantity and delivery destination.
Send your transformer specification to our engineering team.

