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6.3KV 400KVA Dry Type Transformer

Engineered to power mission-critical infrastructures, this advanced 6.3kV 400kVA dry type transformer delivers robust, oil-free energy with outstanding voltage stability and energy efficiency. Its streamlined, compact architecture is optimized for industrial automation, commercial operations, and high-reliability applications. Designed to modernize substations at facilities such as the CHE Hydroelectric Power Plant, this three-phase unit operates without a conventional protective enclosure, ensuring a maintenance‑free, durable solution that reliably supplies 0.4kV AC at 50Hz with minimal losses.

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Product Accessories

Enhance the functionality and performance of your 6.3kV 400kVA Dry Type Transformer with our comprehensive range of precision-engineered accessories, each designed to optimize operation, ensure safety, and facilitate seamless integration into your power distribution system.

Standard Accessories:

Bidirectional Trolley: Equipped with dual-directional wheels and a locking mechanism, this trolley ensures effortless mobility and secure positioning during installation and maintenance.

Temperature Sensors: At least three PT100 sensors are integrated to continuously monitor winding temperatures, providing real-time data to prevent overheating and ensure operational integrity.

Temperature Control Unit: This unit is seamlessly incorporated into the transformer's protection, signaling, and monitoring system, facilitating precise temperature regulation and enhancing system reliability.

Lifting Lugs: Strategically positioned lifting lugs simplify handling and transportation, ensuring safe and efficient movement during setup and servicing.

Neutral Terminal: An accessible neutral terminal on the low-voltage side allows for straightforward grounding and enhances system safety during operation.

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Product Specifications

Voltages

Primary 6.3 kV / Secondary 0.4 kV

Power Rating

400KVA

Phase Configuration

Three-phase

Standards

EN 60076

CEI 60076

IEC 60185

DIN-VDE 0414-1

Cooling Mechanism

Utilizes natural air convection to dissipate heat, eliminating the need for external cooling systems and ensuring efficient thermal management.

Insulation System

Employs a blend of epoxy resin and quartz powder, providing superior moisture resistance and fire safety, while ensuring maintenance-free operation.

Core Construction

Constructed from low-loss, cold-rolled silicon steel with high magnetic permeability, minimizing energy losses and enhancing overall efficiency.

Winding Design

Features copper windings with epoxy resin insulation, offering high mechanical strength to withstand short-circuit forces and ensuring long-term durability.

Insulation Class

The transformer is equipped with Class F insulation, capable of withstanding continuous operating temperatures up to 155°C.

Maximum Winding Temperature Rise

Designed for efficiency, the transformer maintains a maximum average winding temperature rise of 105°C above the ambient temperature during full-load operation.

Product Applications

Economy is more affordable

Product Advantages

Oil-Free Safety

Eliminates fire hazards and environmental risks associated with oil.

High Energy Efficiency

Minimizes energy losses, significantly reducing operating costs.

Robust Durability

Constructed with premium materials for long service life and low maintenance requirements.

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.