The 110kV oil-immersed power transformer is designed for high-voltage transmission and substation applications, providing reliable and efficient power conversion in large-scale power systems.

This series currently focuses on step-down transformer configurations, converting high-voltage transmission power to medium or low voltage for distribution networks.

Based on customer requirements, custom voltage combinations and configurations can also be provided for different grid and industrial applications.

With advanced design and high-quality materials, this transformer ensures:

• Stable long-term operation
• High efficiency and low loss
• Excellent thermal and mechanical performance

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🔹 Standards Compliance

The transformer is manufactured in accordance with international and national standards:

• IEC 60076 – Power Transformers
• GB/T 1094 – Power Transformers
• GB/T 6451 – Oil-Immersed Transformer Technical Requirements
• GB 20052-2020 – Energy Efficiency Standards

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🔹 Key Features

✔ High Capacity & High Voltage Performance

• Designed for 110kV transmission systems
• Suitable for large-scale substations and grid applications

✔ Energy-Efficient Operation

• Optimized magnetic circuit reduces losses
• Lower lifecycle operating costs

✔ Excellent Thermal Stability

• Advanced cooling structure ensures efficient heat dissipation
• Stable operation under heavy load conditions

✔ Strong Short-Circuit Resistance

• Robust winding structure with high mechanical strength
• Reliable performance under fault conditions

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🔹 Structural Design

🔸 Core

• Made of high-permeability grain-oriented silicon steel
• Step-lap core structure reduces:
  • No-load loss
  • Noise

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🔸 Windings

• High-quality oxygen-free copper conductors
• Advanced winding techniques:
  • Continuous winding
  • Helical winding
  • Disc winding

➡ Ensures:

• High electrical strength
• Excellent mechanical stability
• Strong short-circuit resistance

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🔸 Oil Tank & Cooling System

• Heavy-duty welded steel tank
• Cooling methods:
  • ONAN / ONAF / OFAF (optional)
• Equipped with:
  • Radiators
  • Conservator
  • Buchholz relay (optional)

➡ Features:

• Efficient cooling performance
• Reliable sealing and protection
• Long service life

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🔹 Applications

• High-voltage substations
• Power transmission systems
• Utility grid infrastructure
• Industrial power supply systems
• Renewable energy power stations

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🔹 Advantages Summary

• Designed for high-voltage applications
• High efficiency and low loss
• Customizable voltage configurations
• Strong reliability and durability
• Suitable for large-scale engineering projects

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❓ FAQ

1️⃣ What type of transformer configurations are available for 110kV?

Currently, the standard offering is step-down transformers (e.g., 110kV to 35kV or 10kV).

👉 Other voltage combinations can be customized based on project requirements.

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2️⃣ Can this transformer be customized for specific grid conditions?

Yes, customization options include:

• Voltage ratios
• Capacity (MVA)
• Cooling methods (ONAN/ONAF/OFAF)
• Installation environment
• Protection accessories

👉 Suitable for utility, industrial, and renewable energy projects.

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3️⃣ What cooling methods are available?

Common cooling options include:

• ONAN (Oil Natural Air Natural)
• ONAF (Oil Natural Air Forced)
• OFAF (Oil Forced Air Forced)

👉 The selection depends on load requirements and environmental conditions.

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4️⃣ What is the typical delivery time?

• Standard configurations: 6–10 weeks
• Customized transformers: 8–14 weeks

👉 Large-capacity units may require extended production time.