Project Overview

The corrosion-protection project for autotransformer panel radiators at Yangbacun Sectioning Post on the Shanghai–Nanjing–Hefei High-Speed Railway serves electrified high-speed rail traction power applications. As a key node in the traction power supply system, the sectioning post requires its autotransformers and radiator components to accommodate traction load fluctuations, harmonic effects, high summer temperatures, and outdoor installation conditions.

Drawing on its panel radiator manufacturing and transformer thermal management services, Jiangsu Tengqi Electric Power Technology Co., Ltd. provides radiator manufacturing and coating support for the equipment, addressing the project's interface compatibility, corrosion protection, and installation requirements. The project covers6 autotransformers and 36 panel radiator assemblies, usinga paint coating in color code B05, with a total film thickness of165 μm; according to the project documentation, this configuration meets the project'sC3 moderately corrosive environmentprotection requirements.

Project Supply Information

• Project LocationYangbacun Sectioning Post, Shanghai–Nanjing–Hefei High-Speed Railway
• Project TypeCorrosion Protection for Autotransformer Radiators in High-Speed Rail Traction Power Applications
• Corrosion Protection ConfigurationPaint coating in color code B05, with a total film thickness of 165 μm
• Environmental Limits for Corrosion ProtectionC3 moderately corrosive environment
• Project NumberShanghai–Nanjing–Hefei OD-25000/55
• Radiator SpecificationPC1200-27/520

Operating Environment and Equipment Integration Requirements

High-speed rail traction power supply systems impose specific requirements for interface consistency, installation compatibility, and suitability for operating conditions. For the autotransformer radiators at Yangbacun Sectioning Post, manufacturing and corrosion protection design must be coordinated around the actual conditions of the traction power application.

• Load Variations and Sudden Load Changes:Traction loads are subject to fluctuations and sudden load changes. Radiator integration must account for equipment operating conditions within the project's design parameters.
• Harmonic Effects:Harmonic effects may occur in electrified power supply systems, requiring component compatibility to be addressed in line with overall transformer integration requirements.
• High-Temperature Summer Operation:Transformer thermal management and the suitability of radiator components for high-temperature operation are among the project's considerations.
• Outdoor Corrosion Protection:Steel surfaces are exposed to moderately corrosive environmental factors, including rainwater, condensation, temperature variations, and light industrial dust.
• On-Site Installation Coordination:Product dimensions, connection interfaces, and installation conditions must align with transformer integration and site requirements.

Corrosion Protection and Coating Solution for Panel Radiators

B05 Paint Coating Configuration and C3 Environmental Limits

This project uses a paint coating in color code B05, with a total film thickness of 165 μm. According to the project documentation, this coating system is suitable for protection in C3 moderately corrosive environments. C3 environments are typically found in inland industrial towns, conventional outdoor substations, and areas exposed to light industrial dust, rainwater, condensation, and temperature variations.

The corrosion protection assessment for this project is limited to C3 moderately corrosive environments and does not directly extend to coastal environments with high salt spray exposure, heavily polluted industrial environments, or other more severe corrosive conditions. The actual environmental classification and protection requirements must still be confirmed based on the installation location, degree of outdoor exposure, pollutant levels, rainfall and condensation conditions, and subsequent maintenance arrangements.

Corrosion Protection Design and Manufacturing Control Approach

Panel radiators incorporate steel plates, welded structures, and edge and corner transitions. Coating design must address substrate surface preparation, coating accessibility, film thickness uniformity, and coverage of critical areas. The project solution relies on the coating's barrier protection of the substrate, using film thickness and coating quality controls to reduce the likelihood of moisture, oxygen, and contaminants reaching the steel surface.

Welds, edges, corners, and structural transitions require particular attention during coating application. Manufacturing and coating processes must be coordinated with the radiator structure, transport conditions, installation method, and subsequent maintenance needs to reduce the potential impact of localized coating weaknesses or transport and installation damage on corrosion protection.

Project Implementation Highlights

1. Interface and Structural Compatibility:Match interface structures to transformer integration and on-site installation requirements to support subsequent installation.
2. Film Thickness and Coating Quality Management:Use the total film thickness of 165 μm as a key control parameter for the project's coating configuration, and organize quality management around component geometry, weld and edge coverage, and project acceptance requirements.
3. Structural Design and Coating Coordination:Coordinate surface preparation, coating continuity, edge coverage, and localized protection during manufacturing, accounting for both radiator structural characteristics and corrosion protection needs.
4. Consistency Across Batch Production:Address manufacturing planning, coating consistency, and quality verification requirements for the project's 6 autotransformers and 36 radiator assemblies.
5. Project Schedule Coordination:Coordinate radiator interfaces and structural compatibility with transformer integration requirements, site installation conditions, and project execution planning to support project delivery.

Project Application Value

• Develop a panel radiator corrosion protection and manufacturing solution aligned with the autotransformer requirements at Yangbacun Sectioning Post and the electrified high-speed rail traction power application.
• Use the C3 moderately corrosive environment as the design limit, translating corrosion protection requirements into actionable specifications, including a paint coating in color code B05 and a total film thickness of 165 μm.
• Address interface compatibility and batch manufacturing needs to support equipment installation and project-specific supply coordination.
• Account for operating conditions in the radiator integration design, including sudden load changes, harmonic effects, and high summer temperatures.
• Coating processes, film thickness control, and product inspection can be implemented in accordance with project technical documents and requirements confirmed by both parties, providing a basis for subsequent quality verification.

Project Support from TengQi Technology

TengQi Technology (TQT), a brand of Jiangsu Tengqi Electric Power Technology Co., Ltd., specializes in cooling technology research and development for large oil-immersed transformers and reactors, intelligent manufacturing of panel radiators, and related thermal management services. To address the equipment integration needs of transformer manufacturers, EPC contractors, and power project customers, the company can provide coordinated support spanning technical consultation, product selection, research and design, prototype development, custom manufacturing, quality verification, and delivery.

For this project, TengQi Technology provides professional support for panel radiator corrosion-protection coatings, interface compatibility, and batch manufacturing. The company's automated production and intelligent coating capabilities provide the manufacturing foundation for fulfilling project-based orders. Specific product dimensions, tolerances, connection methods, material grades, thermal parameters, inspection and testing items, acceptance conditions, delivery arrangements, and service scope are subject to the project technical agreement, product drawings, and documents finally confirmed by both parties.

According to the available project documentation, the radiator dimensions and interfaces meet the equipment integration and installation requirements, and equipment performance under the project's operating conditions meets project requirements. Actual application results remain subject to the combined effects of overall equipment design, environmental conditions, coating application quality, transport and installation, operation and maintenance, and acceptance criteria. The configuration described here does not constitute a fixed performance commitment for other projects or environmental conditions.