Product Overview
PC1400-29/520 Detachable Radiator for HV transformer
TengQi Technology manufactures the PC1400-29/520 detachable panel radiator for high-voltage oil-immersed transformers, supporting ONAN and ONAF cooling systems in substations, grid upgrade and outdoor transformer projects with project-based selection and technical coordination.
- cooling method
- ONAN natural oil circulation self-cooling, ONAF air cooling
- brand
- TengQi Technology (TQT)
- Applicable Scenarios
- Outdoor substation, power grid reconstruction and expansion, and oil-immersed transformer renovation projects
- Product Name
- PC1400-29/520 High Voltage Transformer Removable Radiator
Core Product Advantages
Product Parameters
Product Details
Product Details
PC1400-29/520 DETACHABLE RADIATOR
Detachable Panel Radiator for High-Voltage Oil-Immersed Transformers
PC1400-29/520 is a detachable panel radiator developed by TengQi Technology (TQT) for high-voltage oil-immersed power transformers. Designed with 1400 mm centers, 29 radiator panels, and a 520 mm panel width, it can be integrated into ONAN natural oil and natural air cooling systems or ONAF oil natural air forced cooling systems. The product is suitable for outdoor substations, grid expansion, and grid modernization projects. Final cooling performance and equipment compatibility shall be verified against transformer thermal load, connection configuration, and operating environment.
Product Positioning
Detachable Transformer Radiator
For cooling system integration, project specification, and customized manufacturing of high-voltage oil-immersed power transformers.
Product Function and System Requirements
During transformer operation, load losses and no-load losses generate heat. The heat is transferred by circulating transformer oil to the radiator, where it is dissipated through heat exchange between the radiator panels and ambient air. The detachable panel design of PC1400-29/520 supports this cooling process and enables coordinated manufacturing, transport, and site assembly of radiator components and the transformer main unit.
Project Integration
Suitable for radiator package supply for new substations, main transformer uprating, grid modernization, and outdoor oil-immersed transformer projects.
Structural Coordination
The detachable design allows the radiator and transformer body to be manufactured, transported, and installed separately, supporting project-based delivery workflows.
Technical Selection Verification
Voltage class alone is not sufficient for selection. Transformer capacity, losses, allowable temperature rise, oil flow conditions, and ambient temperature must also be verified.
ONAN and ONAF Cooling Modes
PC1400-29/520 can be incorporated into transformer cooling systems using natural cooling or fan-assisted cooling. The selected cooling mode shall be determined by overall transformer thermal calculations, load conditions, and project operating requirements.
ONAN: Oil Natural Air Natural
Heat is dissipated through the natural circulation of transformer oil and natural convection between radiator panels and ambient air.
- Suitable for operating conditions confirmed by thermal calculations to meet temperature-rise requirements
- Cooling fans are not used as the primary heat-dissipation enhancement equipment
ONAF: Oil Natural Air Forced
Fans are used to increase airflow across the radiator surface for cooling system designs under higher load conditions.
- Fan quantity, start-stop logic, and control method shall be determined as part of the overall system design
- Actual cooling performance must be verified together with the complete transformer cooling system
Core Design Features and Product Value
Detachable Design
Enables separate manufacturing, transportation, and on-site assembly of the radiator and transformer body, supporting configuration according to equipment design and site conditions.
Panel-Type Radiator Structure
Radiator panels increase the heat-transfer surface exposed to air, providing a defined cooling component solution for oil-immersed transformer cooling systems.
Outdoor Coating Protection
Finished with a paint-dipping process and a stated total dry film thickness of 200 μm, providing a coating basis for outdoor applications. Coating systems for severe corrosive environments require separate confirmation.
Typical Applications
This detachable transformer radiator can serve as an integrated component of cooling systems for high-voltage oil-immersed transformers. Suitability must be further confirmed based on the specific project capacity, temperature rise, interfaces, and environmental conditions.
- Cooling system packages for 35 kV to 110 kV oil-immersed power transformers
- Selected 132 kV outdoor main transformer projects verified for capacity and thermal performance
- Transformer cooling systems for newly constructed outdoor substations
- Grid rehabilitation, capacity expansion, and equipment retrofit projects
- Power transmission and distribution projects in regions with large temperature variations or complex environmental conditions
- Projects requiring ONAN or ONAF transformer cooling configurations
Project Selection and Delivery Coordination
TengQi Technology supports transformer radiator projects with technical consultation, product selection, R&D and engineering design, prototype development, volume manufacturing, quality validation, global delivery, and after-sales technical support. Early confirmation of technical documentation helps reduce interface deviations between the radiator structure and transformer body, providing a reliable basis for manufacturing and on-site assembly.
Transformer capacity, losses, allowable temperature rise, and cooling mode
Interface drawings, connection method, installation orientation, and available space
Ambient temperature, corrosive conditions, minimum design temperature, and applicable standards
Prototype development, volume manufacturing, quality validation, and project delivery coordination
Application Conditions and Technical Limitations
The PC1400-29/520 parameters are intended for preliminary identification and technical discussions and shall not be used independently as the final basis for capacity matching or performance assessment.
- Natural-cooling heat-transfer area is not equivalent to actual heat dissipation under a specific operating condition. Final cooling capacity must be verified against transformer thermal parameters.
- The product is generally suitable for 35 kV to 110 kV oil-immersed power transformers and may be matched to selected 132 kV outdoor main transformer projects subject to project conditions. Final applicability is subject to technical confirmation.
- The current product material is SPCC with a thickness of 1.0 mm. This does not constitute a claim of Q355NE material or specific low-temperature brittle-fracture resistance.
- For projects in severe cold, high-latitude, industrial pollution, or highly corrosive environments, the substrate grade, coating system, welding process, sealing requirements, and low-temperature validation plan shall be confirmed separately.
- Product interfaces, inspection items, lead time, packaging method, and after-sales terms are subject to mutually confirmed order documents and technical agreements.
Reliable Cooling Solutions for Transformer Projects
PC1400-29/520 combines a detachable panel structure, compatibility with ONAN and ONAF cooling configurations, and project-oriented manufacturing coordination to provide a clear radiator selection foundation for high-voltage oil-immersed transformers. Backed by TengQi Technology's capabilities in transformer radiator R&D, intelligent manufacturing, quality validation, and global supply, customers can progress from technical selection confirmation to volume delivery based on project-specific documentation, guided by our professional manufacturing commitment: Integrity First, Innovation for Excellence.
Jiangsu Tengqi Electric Power Technology Co., Ltd.
Company Profile
Manufacturing & Delivery Capabilities
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