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67KV 10500KVA 3 Phase Power Transformer

The 67kV 10,500kVA three-phase oil-immersed power transformer is engineered for high-performance utility applications, delivering reliable power distribution in demanding environments. Designed in compliance with IEEE standards, this transformer ensures optimal performance and durability. Its robust construction and advanced features make it suitable for various industrial and utility applications. The transformer utilizes ONAN (Oil Natural Air Natural) cooling, ensuring efficient heat dissipation. With a Dyn1 vector group configuration, it maintains proper phase displacement between primary and secondary windings. Equipped with DBF2-type cooling fans, the transformer enhances heat dissipation under varying load conditions. Housed in a NEMA 3R stainless steel control box, it is designed for outdoor use, providing stable voltage and a reliable power supply to connected systems.

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Product Accessories

Tap Changer: Equipped with a vacuum-type on-load tap changer for precise voltage regulation.

Oil Drain Valve: Facilitates safe and efficient oil draining during maintenance.

Lifting Lugs: Designed for secure handling during transportation and installation.

Cooling Fans (DBF2-): Enhance heat dissipation to maintain optimal operating temperatures.

Winding Temperature Indicator: Monitors the temperature of windings to prevent overheating.

Oil Temperature Indicator: Tracks oil temperature to ensure safe operating conditions.

Pressure Relief Device: Protects against overpressure situations to maintain safety.

Surge Arresters: Protects the transformer from voltage spikes.

Control Box (NEMA-3R Stainless Steel): Houses control and monitoring instruments in a weather-resistant enclosure.

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Product Specifications

Power Rating

10500kVA

Primary Voltage

67kV (Delta Connection)

Secondary Voltage

4.16kV (Grounded Wye)

Operating Frequency

50/60Hz

Vector Group

Dyn1

Impedance

8% at 7500kVA

Cooling Method

ONAN/ONAF

BIL Rating

350kV/75kV

Oil Weight

13,889 lbs

Total Weight

53,572 lbs

Product Applications

Economy is more affordable

Product Advantages

Enhanced Cooling Efficiency

The ONAN/ONAF cooling system ensures effective heat dissipation, maintaining optimal operating temperatures.

Advanced Monitoring Features

Equipped with temperature indicators and pressure relief devices for proactive maintenance and safety.

Robust Construction

Built to withstand harsh environmental conditions, ensuring longevity and reliability.

WellDone Power Transformer Plan Drawing

FAQ

What range of transformer products do you offer and which standards do they meet?

We manufacture a diverse array of transformers including Oil-Immersed Distribution Transformers, Dry Type Transformers, Power Transformers, Three Phase Pad Mounted Transformers, Single Phase Pad Mounted Transformers, Substation Transformers, and Pole Mounted Transformers. Our technical team, with nearly 20 years of industry experience, ensures that our designs comply with international standards such as ANSI, IEEE, DOE, CSA, AS, AZS, GOST, IEC, and more. Additionally, many of our products have obtained UL, cUL, and CSA certifications, affirming their safety and performance in global markets.
How do you ensure the quality and reliability of your transformers?

Our transformers are produced under a rigorous quality management system covering every stage from material selection to final testing. Each product comes with a minimum 24-month warranty, ensuring long-term safety and reliability. This commitment to quality has earned the trust of global customers and leading industry players.
What are your production lead times, customization options, and global market reach?

For standard models, our production lead time is typically 10 to 25 days, and we offer flexible OEM/ODM services for customized projects. We also tailor packaging solutions to meet specific customer requirements. Our transformers are exported worldwide—including North America, Europe, South America, Australia, Asia, and Africa—with successful partnerships involving renowned companies. For more details or personalized support, please contact us via email or WhatsApp.