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10KV 630KVA Three Phase Low Loss Distribution Transformer

10KV 630KVA Three Phase Low Loss Distribution Transformer

The 10kV 630kVA Three-Phase Low Loss Distribution Transformer redefines energy efficiency with its cutting-edge oil-immersed design. Engineered for superior performance, it minimizes no-load and load losses while ensuring precise voltage regulation for stable and efficient power distribution. Constructed with high-quality cold-rolled silicon steel and oxygen-free copper windings, it enhances conductivity and reduces energy dissipation. The fully sealed oil tank prevents oxidation and extends service life, making it an ideal solution for urban substations, industrial operations, and critical power infrastructures. With low noise, high reliability, and minimal maintenance requirements, it guarantees uninterrupted power for demanding applications.

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Product Accessories

Core
Utilizes high-permeability, cold-rolled silicon steel laminations fabricated through a full oblique seam stacking or three-dimensional winding method. This process notably curbs hysteresis losses and minimizes no-load currents, leading to a quieter operation. Additionally, the core undergoes a vacuum nitrogen annealing process to relieve internal stresses and boost electromagnetic efficiency.

Windings
Both high- and low-voltage windings are constructed with oxygen-free copper conductors or copper foil. The low-voltage windings adopt a dual-layer cylindrical or helical configuration, whereas the high-voltage windings feature a multi-layer cylindrical design. This optimized arrangement enhances short-circuit resistance and conduction efficiency. The direct winding onto the core results in a compact, robust structure with superior mechanical integrity.

Oil Tank
Features a fully sealed, corrugated oil tank crafted from welded steel plates. The corrugated fins not only serve as efficient heat dissipation elements but also compensate for oil volume variations, eliminating the need for a conservator and reducing maintenance demands. The tank’s surface is meticulously treated—rust removal, phosphating, and coated with a triple-protection finish (resistant to rain, moisture, and salt spray)—ensuring reliable performance in humid or corrosive environments.

Cooling System
Employs a natural oil cooling (ONAN) approach that leverages the thermal expansion and contraction of the corrugated fins to circulate the oil. This design obviates the requirement for supplementary cooling devices, making it ideally suited for outdoor installations.

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Product Specifications

Voltage Rating

High Voltage: 10 kV

Low Voltage: 0.4 kV

Power Output

630KVA

Phase System

3-phase

Frequency

50/60Hz

No-load Loss (P₀)

≤570 W

Load Loss (Pₖ)

≤6200 W (at 120°C)

Short-Circuit Impedance (Uk%)

4.5% (default)

Cooling Method

ONAN (Oil-Immersed Self-Cooled)

Noise Level

≤52 dB(A) (no-load, measured at 1 m)

Standards Compliance

Meets IEC 60076 and IEEE requirements

Product Applications

Economy is more affordable

Ideal for manufacturing plants and processing facilities requiring stable and efficient energy distribution.

Industrial Power Distribution
Suited for shopping malls and office buildings where reliable power supply is critical.

Commercial Complexes
Effective in connecting wind or solar farms to the grid, ensuring minimal energy loss.

Renewable Energy Integration
Applicable in metro stations and large public facilities demanding consistent power quality.

Urban Infrastructure Projects

Product Advantages

Enhanced Energy Efficiency

Low no-load and load losses contribute to significant energy savings over the transformer's lifespan.

Robust Short-Circuit Resilience

Engineered to withstand electrical faults, ensuring uninterrupted operation and safety.

Versatile Voltage Adaptability

Adjustable HV taps allow for seamless adaptation to varying grid conditions, enhancing operational flexibility.

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.