The 35kV energy-efficient oil-immersed power transformer is designed for medium-voltage power distribution systems, offering excellent performance, high reliability, and energy-saving operation.

It adopts high-quality cold-rolled grain-oriented silicon steel with a 45° fully mitered joint core structure, effectively reducing no-load loss and operating noise.

With a compact structure and advanced design, this transformer is widely used in:

• Urban and rural power grids
• Industrial and mining enterprises
• Power system upgrades and reconstruction
• Prefabricated compact substations

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🔹 Standards Compliance

This product is manufactured in strict accordance with international and national standards:

• IEC 60076-1 – Power Transformers
• GB/T 1094.1 – Power Transformers
• GB/T 6451 – Technical Parameters for Oil-Immersed Transformers
• JB/T 10088 – Sound Levels of 6kV–500kV Transformers
• GB 20052-2020 – Energy Efficiency Limits and Grades

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🔹 Key Features

✔ High Energy Efficiency

• Advanced core design reduces no-load loss
• Meets modern energy-saving standards
• Lower lifecycle operating costs

✔ Low Noise Operation

• Optimized magnetic circuit reduces vibration
• Suitable for urban and residential installations

✔ Reliable & Compact Design

• Space-saving structure
• Eenvoudige installatie en onderhoud
• Ideal for compact substations

✔ Strong Mechanical Strength

• High resistance to short-circuit impacts
• Stable performance under heavy load conditions

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🔹 Structural Design

🔸 Core

• High-permeability grain-oriented silicon steel
• Multi-step core structure (3-joint / 5-joint / 7-joint)
• Fully mitered joints for:
  • Lower loss
  • Reduced noise

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🔸 Windings

• High-quality enameled copper conductors
• Oxygen-free copper materials
• Winding types include:
  • Cylindrical
  • Continuous
  • Helical
  • Foil winding

➡ Provides:

• Excellent electrical insulation
• Strong mechanical strength
• Efficient heat dissipation

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🔸 Oil Tank

• Constructed from high-quality welded steel plates
• Tank types:
  • Oval
  • Rectangular
• Cooling options:
  • Radiator fins
  • Corrugated tank
• Surface treatment:
  • Acid cleaning & phosphating
  • Multi-layer anti-corrosion coating

➡ Ensures:

• Reliable sealing performance
• Strong corrosion resistance
• Long service life

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🔹 Applications

• Medium-voltage power distribution systems
• Industrial plants and heavy industries
• Infrastructure and utility projects
• Renewable energy grid integration
• Prefabricated substations

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🔹 Advantages Summary

• Energy-saving and eco-friendly
• Low noise and low loss
• High reliability and durability
• Suitable for modern grid systems
• Flexible customization options

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❓ FAQ

1️⃣ What is the typical application of a 35kV oil-immersed transformer?

35kV transformers are mainly used in medium-voltage distribution networks, including:

• Industrial power supply systems
• Utility substations
• Renewable energy projects

👉 They are ideal for transmitting power over longer distances with stable performance.

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2️⃣ Can this transformer be customized for different projects?

Yes, full customization is available:

• Rated capacity (kVA/MVA)
• Voltage levels (HV/LV)
• Vector group
• Cooling method
• Installation environment

👉 Custom solutions are widely applied in large-scale infrastructure projects.

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3️⃣ How does this transformer ensure low noise operation?

The transformer uses:

• High-quality silicon steel core
• Fully mitered joint design
• Optimized magnetic circuit

👉 These features significantly reduce vibration and operational noise.

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4️⃣ What is the delivery time for this product?

• Standard configurations: 4–6 weeks
• Customized designs: 6–10 weeks

👉 Fast delivery options are available for urgent projects.