30-2500kVA/10kV Low-Loss Resin Casting Dry Type Power Transformer

The SCB11 30–2500kVA/10kV low-loss resin-cast dry-type power transformer is a professionally engineered, high-performance electrical solution built to satisfy the versatile and demanding power distribution requirements of modern industrial, commercial and infrastructure sectors. As a highly efficient three-phase dry-type transformer tailored for 10kV power distribution systems, it integrates ultra-low energy loss, exceptional structural stability and long-term operational safety into one compact design, making it a core piece of power equipment for reliable grid operation and energy-saving transformation.

1. Premium Material & Precision Manufacturing for Zero Defects

This transformer is wound with high-strength oxygen-free copper windings that feature superior electrical conductivity, minimal resistance loss and enhanced mechanical strength. Combined with cutting-edge vacuum casting technology and nano-grade epoxy resin curing technology, the product achieves fully seamless lamination and zero air gaps between winding layers. This industry-leading craftsmanship effectively eliminates insulation weaknesses caused by air bubbles or structural gaps, greatly improving insulation stability, heat dissipation efficiency and impact resistance, while laying a solid foundation for long-term stable operation under heavy loads.

2. Strict Quality Inspection for Ultimate Delivery Safety

Every unit undergoes a full set of authoritative and extreme reliability tests before leaving the factory to guarantee 100% qualified delivery. Key performance tests include partial discharge testing controlled below 5pC, which effectively suppresses insulation aging and electrical faults, as well as extreme temperature cycle testing ranging from -40℃ to 155℃ to verify its adaptability to severe cold, high heat and drastic temperature fluctuations. Such rigorous quality control ensures the transformer maintains outstanding performance stability even in harsh outdoor or complex working environments, with zero hidden dangers in long-term operation.

3. Ultra-Low Loss & High Energy Efficiency

With an optimized electromagnetic design and high-quality core materials, the SCB11 series achieves remarkably low no-load and load loss levels. It significantly reduces unnecessary power consumption during operation, delivers outstanding energy-saving benefits, cuts down long-term operating costs for users, and fully aligns with global trends of green, low-carbon and efficient power utilization.

Technical Features

● Wide capacity range of 30kVA–2500kVA, fully matching diversified 10kV power distribution project demands

● High-purity oxygen-free copper windings for low resistance, low heat generation and high conductivity

● Vacuum casting + nano-grade epoxy resin curing process, realizing interlayer seamless bonding and zero air gaps

● Ultra-low partial discharge level (<5pC) to extend service life and improve operational safety

● Wide operating temperature range (-40℃ to 155℃) with strong resistance to temperature shocks and harsh environments

● Epoxy resin cast, oil-free and flame-retardant structure, free of fire and leakage risks

● Excellent short-circuit withstand capability, moisture resistance and corrosion resistance for high environmental adaptability

● Low maintenance requirement, suitable for unattended power distribution stations and critical power supply nodes

1. Installation height: not more than 1000m above sea level;

2. Power supply voltage waveform is approximately sinusoidal;

3. Symmetry of multi-phase power supply voltage: the power supply voltage connected to the multi-phase transformer should be approximately symmetrical.

4. Maximum temperature +40℃;

5. Maximum daily average temperature +30℃;

6. Maximum annual average temperature +20℃;

7. Minimum temperature -25℃ (applicable to indoor transformers).

Note:

1. The only adjustment for the on-load tap-changing SC(B)9 series transformer is the following: the weight is increased by 100 kg, the on-load tap-changer is arranged on the side (a) or the front (b) of the transformer, and the length is increased by 750 mm.

2. The voltage fluctuation range we can provide is: ±4 × 2.5%.

3. The data in the table is for reference only.

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