Railway Traction Transformer Manufacturer | Oil-Immersed

CEEG Oil-Immersed Railway Traction Transformer

A high-temperature oil-immersed transformer designed for electrified railway traction power supply. It converts high-voltage electricity into low-voltage power suitable for traction locomotives. It features high-mechanical-strength windings and automated core stacking technology, delivering excellent short-circuit resistance and low losses. Designed for heavy-duty and high-speed railway applications, it ensures reliable performance under demanding operating conditions.

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Scope of application

High-Speed Railways

Long-duration, high-load operation with strict requirements on temperature rise control and short-circuit withstand capability.

Heavy-Haul Railways

Frequent load impacts require strong mechanical strength and high operational reliability.

Mainline Traction Systems

Used as core equipment in traction substations, focusing on lifecycle cost efficiency and long-term stable performance.

Product Description

1 High Temperature Resistance: Uses high-temperature insulation materials and liquid cooling technology to ensure stable long-term operation in harsh environments.

2 High Efficiency: Low-loss, high-efficiency design meets the heavy power demands of railway traction systems.

3 Eco-Friendly & Safe: Employs environmentally friendly insulating fluids that are fire-resistant, non-toxic, and compliant with international safety standards.

4 Built for Harsh Conditions: Reliable operation under humidity, salt mist, and vibration, suitable for diverse railway applications.

5 Flexible Customization: Modular design allows tailored configurations for different line requirements, with easy installation and maintenance.

6 Long Service Life & Low Cost: Optimized structure reduces maintenance needs and lifecycle costs, ensuring stable and economical railway power supply.

Product Features

Safe & Reliable

As a critical component in electrified railway systems, it ensures stable performance and prevents power outages caused by equipment failure, supporting efficient railway operations.

Energy Efficient

Low-loss design significantly reduces energy consumption and operating costs while improving overall system efficiency.

Long Service Life & Low Maintenance

Designed for minimal or maintenance-free operation, reducing downtime and ensuring continuous power supply in line with modern lifecycle management concepts.

Excellent Overload Capacity

Features low loss and low temperature rise, maintaining stable performance under overload conditions and maximizing capacity utilization.

High-Temperature Oil-Immersed Design

Uses high-temperature insulating fluid and sealed structure, suitable for extreme conditions such as tunnels and high ambient temperatures, with better thermal control.

Vibration & Shock Resistant

Reinforced structure and clamping design withstand vibration and impact in traction applications, ensuring stable and reliable operation.

Main Parameters

Typical Range	5 MVA - 50 MVA
High Voltage Side	110 kV / 220 kV
Low Voltage Side	27.5 kV / 55 kV
Cooling Method	ONAN (Oil Natural Air Natural) / OFAF (Forced Oil Circulation Air Cooling)
Insulation Class	High-temperature insulation materials

Implementation Standard

GB 1094 Power Transformers

GB/T 6451 Oil-Immersed Power Transformer Technical Parameters and Requirements

IEC 60354 Transformer Loading Guide

TB/T 1027 Technical Specifications for Electrified Railway Traction Transformers

Technical Advantages

R&D Cloud Platform

An integrated digital platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables transformer design resource sharing and efficient data management, including search, modification, and version control.

Simulation Analysis

Comprehensive multi-physics simulation covering fluid flow, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each transformer series is optimized through thermal and flow analysis to accurately control winding temperature rise and hotspot distribution, ensuring reliable and stable performance.Smart Operation & Maintenance Platform

Smart Operation & Maintenance Platform

By collecting key data such as temperature, current, voltage, vibration, and grid harmonics, the system enables real-time power quality analysis and fault alarms. It also supports mobile access for remote monitoring and intelligent O&M management.