S13-20 Core Type Transformer – Efficient 20kVA Three-Phase Power Conversion Solution

The S13-20 core type transformer is a high-efficiency, three-phase oil-immersed power transformer designed for reliable voltage conversion from **10kV (primary) to 380V (secondary)** with a rated capacity of **20kVA**. Built to meet modern energy-saving standards, it features an advanced stepped-lap core construction that significantly reduces no-load losses and operational noise—making it ideal for residential complexes, small industrial facilities, and commercial distribution networks.

Complying with IEC 60076 and GB/T 6451 standards, the S13-20 series delivers superior thermal stability, low temperature rise, and extended service life. Its fully sealed tank design prevents moisture ingress and oil oxidation, ensuring maintenance-free operation in diverse indoor and outdoor environments.

• Energy-efficient 20kVA distribution transformer – reduces electricity waste with ultra-low no-load losses for sustainable grid operation

• Three-phase 10kV to 380V converter – enables safe, stable power delivery for lighting, motors, and control systems

• Low-loss core-type power transformer – optimized magnetic circuit minimizes hysteresis and eddy current losses

With a compact footprint and robust insulation system (rated at 35kV basic impulse level), this transformer integrates seamlessly into pad-mounted substations or pole-top installations. It supports continuous operation under full load while maintaining high efficiency (>98%) and excellent voltage regulation.

Engineered for reliability and sustainability, the S13-20 is a smart choice for utilities and facility managers seeking a cost-effective, eco-friendly solution for localized power transformation in low-to-medium demand applications.