The 10kV S13 (S20/S22)-M series oil-immersed distribution transformer is an upgraded generation of high-efficiency and low-loss transformers designed to meet modern power distribution requirements.

Compared with the S11 series, the S13 series features lower no-load loss, improved energy efficiency, and reduced operating costs, making it an ideal solution for energy-saving power systems.

The core is manufactured using high-quality cold-rolled grain-oriented silicon steel with a 45° fully mitered joint structure, ensuring excellent magnetic performance, reduced losses, and low noise operation.

This transformer is widely applied in:

• Redes urbanas y rurales de distribución de electricidad
• Empresas industriales y mineras
• Power grid renovation and upgrading projects
• Subestaciones prefabricadas compactas (subestaciones paquete)

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🔹 Cumplimiento de las normas

This product complies with major international and national standards:

• IEC 60076-1 - Transformadores de potencia
• GB/T 1094.1 - Transformadores de potencia
• GB/T 6451 - Requisitos técnicos de los transformadores sumergidos en aceite
• JB/T 10088 - Nivel sonoro de los transformadores de 6kV-500kV
• GB 20052-2020 – Minimum Allowable Values of Energy Efficiency

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Características principales

✔ Higher Energy Efficiency

• Lower no-load loss than S11 series
• Meets higher energy-saving requirements
• Reduces long-term operational costs

✔ Low Noise Performance

• Optimized core design minimizes vibration
• Adecuado para entornos residenciales y sensibles al ruido

✔ Compact & Robust Structure

• Space-saving design
• Ideal for prefabricated substations

✔ Fuerte resistencia al cortocircuito

• Advanced winding technology
• Excellent mechanical and thermal stability

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🔹 Diseño estructural

Núcleo

• Acero al silicio de grano orientado de alta permeabilidad
• Multi-step structure (3-joint / 5-joint / 7-joint options)
• Juntas totalmente ingleteadas para:
  • Reduced no-load loss
  • Lower noise

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🔸 Bobinados

• Alambre de cobre esmaltado de alta calidad (tipo QQ)
• Conductores de cobre sin oxígeno
• Available winding structures:
  • Cilíndrico
  • Continuo
  • Helicoidal
  • Bobinado de láminas

➡ Proporciona:

• Alta resistencia eléctrica
• Strong mechanical durability
• Eficaz disipación del calor

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🔸 Depósito de aceite

• Made of high-quality welded steel plates
• Estructuras disponibles:
  • Oval type
  • Rectangular type
• Métodos de refrigeración:
  • Aletas del radiador
  • Depósito ondulado
• Tratamiento de la superficie:
  • Limpieza ácida y fosfatado
  • Pintura de tres capas y un acabado

➡ Características:

• Excellent corrosion resistance
• Sellado fiable
• Larga vida útil

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Aplicaciones

• Power distribution systems
• Industrial facilities and factories
• Renewable energy integration projects
• Urban infrastructure construction
• Subestaciones compactas

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🔹 Resumen de ventajas

• Higher efficiency than S11 transformers
• Energy-saving & environmentally friendly
• Bajo nivel de ruido y bajas pérdidas
• Reliable and durable
• Adecuado para las redes inteligentes modernas

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PREGUNTAS FRECUENTES

1️⃣ What is the difference between S11 and S13 transformers?

The S13 transformer offers lower no-load loss and higher energy efficiency compared to S11.
👉 This results in reduced electricity consumption and lower operating costs over time.

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2️⃣ Can the S13 transformer be customized?

Yes, customization is available, including:

• Capacidad nominal (kVA)
• Niveles de tensión (AT/BT)
• Grupo vectorial
• Método de refrigeración
• Installation type

👉 Custom designs are widely used in industrial and substation projects.

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3️⃣ Is this transformer suitable for outdoor and substation use?

Yes, it is designed for both outdoor installation and prefabricated substations.

Cuenta con:

• Strong sealing performance
• Corrosion-resistant coating
• Stable operation in harsh environments

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4️⃣ ¿Cuál es el plazo de entrega habitual?

Delivery time depends on specifications and order quantity.

• Standard models: 3–6 weeks
• Customized orders: 4–8 weeks

👉 Fast production and flexible scheduling are available for urgent projects.