SRN-M Series High Temperature Resistant Liquid-Immersed Transformer

Scope of application

High-Temperature Regions

Suitable for urban distribution networks in consistently high-temperature climates, with a strong focus on temperature rise control and extended service life of the equipment.

High-Load Facilities

Ideal for data centers, industrial parks, and primary power supply systems where high reliability and low energy loss are critical to ensure stable continuous operation.

Renewable Energy Power Stations

Designed for outdoor grid connection points in solar and wind power plants, offering excellent environmental adaptability and stable performance under harsh operating conditions.

Product Description

1 Efficient Cooling Performance：Equipped with a dedicated cooling system design for rapid heat dissipation, ensuring stable temperature control and reliable operation.

2 Wide Industrial Applications：Suitable for demanding continuous-duty environments such as steel plants, coal mining, and chemical industries where high-temperature operation is required.

3 Enhanced Thermal Resistance：Improved thermal load capacity enables the transformer to perform reliably in high-temperature operating conditions.

4 Hybrid Insulation Design：Utilizes zone-based material selection according to temperature distribution, balancing heat resistance, operational reliability, and cost efficiency.

5 Extended Service Life：Reduces thermal stress and insulation aging rate, significantly improving equipment lifespan and long-term operational stability.

Product Features

Safe, Energy-Efficient & Low Loss Design

By optimizing the internal temperature field of the transformer and selecting insulation materials with different thermal resistance grades, energy losses are effectively reduced while improving operational safety and efficiency.

High Temperature Resistance & Extended Service Life

Using thermal field simulation technology to accurately define temperature distribution zones, high heat-resistant insulation materials are applied to fully leverage thermal performance and significantly extend transformer service life.

“Seven-Level Thermal Control Technology”

A multi-stage thermal management system that regulates temperature from winding hot spots to lower-temperature external zones. It also accounts for temperature variations under short-circuit and overload conditions, greatly improving thermal control performance and system reliability.

High Oil Temperature Operation Capability

Designed for a maximum operating oil temperature of up to 120°C, ensuring excellent safety margins, thermal performance stability, and long expected service life even under high-temperature conditions.

Eco-Friendly Halogen-Free Design

Uses environmentally friendly insulating fluids and halogen-free material systems, making it safer and more suitable for indoor installations and confined spaces.

Smart Monitoring System

Supports real-time online monitoring of oil temperature, winding temperature, and load conditions, with timely fault warnings to improve operational safety and maintenance efficiency.

Main Parameters

Rated Capacity	500kVA - 10,000kVA
Rated Voltage	Primary side 6kV / 10kV / 35kV
Insulation Class	Class C (220°C), Class B (130°C), Class A (105°C)
Cooling Method	Natural oil cooling (ONAN) or forced oil cooling (OFAF/ONAF)
Operating Oil Temperature	Up to 120°C for high-temperature operation

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

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.