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67KV 8400KVA 3 Phase Power Transformer

The 67kV 8400kVA three-phase power transformer is designed for high-performance utility applications, ensuring reliable power distribution in demanding environments. Compliant with IEEE standards, it offers optimal efficiency and durability. With a primary voltage of 67kV (Delta) and a secondary voltage of 4.16kV (Grounded Wye), this transformer utilizes the ONAN (Oil Natural Air Natural) cooling method to maintain operational stability. Its Dyn1 vector group configuration ensures proper phase displacement, while the inclusion of DBF2-type fans enhances heat dissipation. Housed in a NEMA 3R stainless steel control box, it's suitable for outdoor use. This transformer operates efficiently under varying load conditions, providing stable voltage and a reliable power supply to connected systems.

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Product Accessories

The transformer comes with a comprehensive set of accessories to ensure seamless operation and maintenance:

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

Oil Level Gauge: Monitors oil levels to prevent operational issues.

Cooling Fans: DBF2-type fans to enhance cooling efficiency.

Control Box: NEMA 3R stainless steel control box for housing control devices.

Surge Arresters: Protects against voltage spikes.

Pressure Relief Device: Ensures safe operation under pressure variations.

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

Oil Temperature Indicator: Tracks oil temperature to maintain optimal performance.

Vacuum Pressure Gauge: Measures internal pressure to detect potential issues.

Lifting Lugs: Facilitates safe handling and transportation.

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Product Specifications

Power Rating

8400kVA (ONAN)

Primary Voltage

67kV (Delta)

Secondary Voltage

4.16kV (Grounded Wye)

Frequency

60Hz

Vector Group

Dyn1

Cooling Method

ONAN

Impedance

8% at 7500kVA

Altitude

≤1000m

Oil Weight

13,889 lbs

Total Weight

53,572 lbs

Product Applications

Economy is more affordable

Product Advantages

High Efficiency

Optimized design reduces energy losses, improving overall system efficiency.

Durability

Built with high-quality materials to withstand harsh environmental conditions.

Advanced Monitoring

Equipped with comprehensive monitoring instruments for proactive maintenance.

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.