Project Overview

The Ust-Kamenogorsk HPP Reconstruction Project is part of an energy utility modernization context in Ust-Kamenogorsk, Kazakhstan. TengQi Technology supplied a customized panel radiator package for one SFZ-63000/115 transformer serving the project’s 110kV transformer cooling system. The configuration supports a utility-duty application associated with substation power supply and power-generation facilities providing city heating support.

The project environment combines severe winter temperatures, hot summers, substantial day-to-night temperature variation, and continuous operating duties. In response, Jiangsu Tengqi Electric Power Technology Co., Ltd., under the TengQi Technology (TQT) brand, developed the panel radiator configuration with attention to low-temperature adaptability, outdoor corrosion protection, and project-specific manufacturing coordination.

Project Configuration

Operating Context and Design Considerations

The transformer radiator system was specified for a demanding outdoor utility environment. The project required consideration of seasonal extremes, continuous base-load operation, and the operational demands that can arise during the winter heating period. These conditions place practical requirements on radiator materials, welded construction, coating adhesion, surface protection, and overall manufacturing consistency.

• Low-temperature adaptability: The radiator solution incorporated special material selection and reinforced low-temperature design considerations in accordance with project requirements.
• Large temperature variation: The configuration addressed the combined effects of cold winters, hot summers, and notable daily temperature fluctuations.
• Continuous utility duty: The radiator package was matched to a transformer serving long-duration power supply and heating-support generation duties.
• Project standards and maintenance coordination: IEC-related requirements, oil leakage resistance, fire protection considerations, and compatibility with local operation and maintenance practices were subject to project technical documentation and acceptance criteria.

C4 Corrosion Protection Strategy

For outdoor operation in a C4 corrosivity environment, the panel radiators were specified with a duplex protection system consisting of hot-dip galvanizing and an external RAL 7035 coating. The total specified film thickness is 200 μm, including a 60 μm galvanized layer and a 140 μm coating layer.

1. Hot-dip galvanized layer: provides foundational zinc-based protection for the metal substrate.
2. RAL 7035 topcoat: provides an external isolation layer and surface protection against environmental exposure.
3. Combined protective structure: supports the radiator’s suitability for outdoor temperature and humidity changes as well as corrosion-related environmental factors.

Coating adhesion, inspection scope, acceptance methods, and long-term corrosion performance remain subject to the approved technical specification, agreed quality requirements, and project verification records.

Manufacturing and Project Coordination

The radiator package was developed around the transformer parameters and project operating conditions. For overseas power infrastructure projects, panel radiator selection must consider not only compatibility with the transformer body, but also regional climate, corrosion category, surface treatment, transport arrangements, delivery requirements, and subsequent maintenance conditions.

TengQi Technology supports project-based collaboration across radiator selection, design coordination, customized manufacturing, and quality verification. As a professional manufacturer of transformer cooling products and thermal management solutions, the company provides a business foundation covering research and design, automated manufacturing, quality control, and global delivery. The applicable delivery schedule, inspection scope, and technical support for each project are confirmed through the relevant contract and technical documentation.

Project Value

Application Reference

The solution logic applied to the Ust-Kamenogorsk HPP reconstruction project can serve as a reference for customized transformer panel radiator requirements involving:

• Power projects in regions with low winter temperatures, hot summers, and large daily temperature changes;
• Urban power supply and heating-support applications with continuous operation or seasonal heavy-load conditions;
• Outdoor transformer installations requiring C4 corrosion environment protection;
• Power facility reconstruction, upgrade, and modernization programs; and
• Overseas projects requiring radiator configurations aligned with local operating and maintenance conditions.

For projects operating in severe cold, high-temperature, corrosive, or otherwise complex conditions, TengQi Technology evaluates radiator configurations according to transformer parameters, environmental conditions, corrosion category, project standards, manufacturing feasibility, and quality acceptance requirements.