The S20 amorphous alloy oil-immersed distribution transformer is a new-generation ultra energy-efficient transformer designed for modern power distribution systems.

It adopts amorphous alloy core material, which features a unique non-crystalline atomic structure, significantly improving magnetization and demagnetization performance compared to traditional silicon steel cores.

This advanced material results in extremely low no-load loss, reduced excitation current, and superior energy efficiency, making it one of the most energy-saving distribution transformers available today.

The transformer is widely used in:

• Urban and rural power distribution networks
• Industrial and commercial power systems
• Energy-saving retrofit projects
• Renewable energy and smart grid systems

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🔹 Standards Compliance

The product complies with the following standards:

• IEC 60076-1 – Power Transformers
• GB/T 1094.1 – Power Transformers
• GB/T 25446 – Amorphous Alloy Core Oil-Immersed Distribution Transformers
• JB/T 10088 – Sound Levels of 6kV–500kV Transformers
• GB 20052-2020 – Energy Efficiency Limits and Grades

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🔹 Key Features

✔ Ultra-Low No-Load Loss

• No-load loss reduced by up to 75% compared with S11 transformers
• No-load current reduced by approximately 80%

👉 Significantly lowers long-term energy consumption

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✔ Advanced Amorphous Alloy Core

• Ultra-thin core thickness (≈0.025 mm, only 1/10 of silicon steel)
• High magnetic permeability
• Excellent temperature stability

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✔ Strong Short-Circuit Resistance

• Low-voltage winding uses copper foil structure
• Improved mechanical strength and fault tolerance

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✔ Improved Power Quality

• Vector group: Dyn11
• Effectively reduces harmonic impact on the grid

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✔ Fully Sealed & Maintenance-Free

• Hermetically sealed tank design
• Prevents oil aging and moisture ingress
• Longer service life with minimal maintenance

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✔ High Reliability Manufacturing

• Vacuum oil filling eliminates internal air bubbles
• Each unit passes full-wave lightning impulse test

👉 Ensures stable insulation and safe operation

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🔹 Structural Design

🔸 Core

• Made of amorphous alloy ribbon
• Structure options:
  • Single-frame core
  • Three-phase five-limb core

➡ Features:

• Extremely low core loss
• Reduced noise

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🔸 Windings

• High-quality copper conductors
• Low-voltage winding adopts copper foil design

➡ Provides:

• Strong short-circuit resistance
• Improved heat dissipation

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🔸 Oil Tank

• Fully sealed structure
• No conservator required

➡ Benefits:

• Maintenance-free operation
• Extended service life

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🔹 Applications

• Energy-saving power distribution projects
• Industrial and commercial facilities
• Smart grids and green energy systems
• Urban infrastructure and utilities
• Renewable energy integration

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🔹 Advantages Summary

• Ultra-low loss & high efficiency
• Significant energy cost savings
• Environmentally friendly
• Maintenance-free design
• High reliability and long lifespan

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❓ FAQ

1️⃣ What makes amorphous alloy transformers more efficient than traditional transformers?

Amorphous alloy cores have a non-crystalline structure, which reduces magnetic loss significantly.

👉 Compared to traditional silicon steel transformers:

• No-load loss reduced by up to 75%
• No-load current reduced by about 80%

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2️⃣ Is the S20 transformer suitable for energy-saving projects?

Yes, it is ideal for energy efficiency upgrades and green power systems.

👉 It aligns with government policies on:

• Energy conservation
• Carbon reduction
• Sustainable development

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3️⃣ Does this transformer require maintenance?

No, it uses a fully sealed tank design, which:

• Prevents oil oxidation
• Eliminates moisture ingress

👉 This allows maintenance-free operation for long-term use.

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4️⃣ Can this transformer be customized?

Yes, customization options include:

• Capacity (kVA)
• Voltage levels
• Vector group
• Installation environment

👉 Suitable for various industrial and utility applications.