Jiangsu Huachen Transformer Co.,Ltd.
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Photovoltaic box-type substation (also called new energy pre-installed substation) is an all-in-one high-voltage/low-voltage power distribution unit specifically engineered for renewable energy generation systems. It integrates high-voltage switchgear, transformer core, protective fuses in the oil tank, low-voltage switchgear and all necessary auxiliary equipment into a single compact enclosure. As a dedicated 10kV 35kV step-up transformer substation, it elevates the voltage output from photovoltaic grid-tie inverters or AC generators to 10kV or 35kV, enabling efficient power transmission and grid connection. This prefabricated solution has become the ideal supporting equipment for modern solar power projects worldwide.
Compact footprint & superior heat dissipation: Space-saving structure with external radiators significantly reduces land acquisition costs while ensuring optimal thermal management.
Advanced transformer technology: New-generation transformer design with rational structure guarantees long-term safe and stable operation.
Oil-insulated high-voltage system: Transformer oil serves as the insulation medium for 10kV/35kV components, drastically reducing required safety clearances and overall equipment size.
Fully sealed oil tank: Complete isolation from the atmosphere minimizes oil oxidation and moisture ingress, enhancing system reliability and extending service life. Easy-to-disassemble plate-type radiators simplify maintenance procedures.
Durable enclosure: Special shot-peening and coating process provides excellent corrosion, UV and sand erosion resistance for harsh outdoor environments.
High-performance low-voltage protection: Latest intelligent circuit breakers and molded case air switches offer superior breaking capacity and comprehensive protection features.
Remote monitoring capability: Equipped with communication-enabled pressure gauges and thermometers, plus travel switches on load switches for real-time remote monitoring, operation and maintenance.
Industry-leading protection: Enclosures achieve IP54 for high/low voltage chambers and IP68 for the transformer body, ensuring reliable operation in extreme conditions.
Parameter | Specification |
Rated Voltage Levels | 10kV, 35kV |
Transformer Type | Oil-immersed combined transformer |
Protection Grade | IP54 (high/low voltage chambers), IP68 (transformer body) |
Compliance Standards | JB/T10217, GB1094, GB/T6451, GB11022, GB/T16927, GB311.1, GB50150, GB/T5273, GB4208, GB/T191 |
Cooling Method | External plate-type radiator |
Insulation Medium | Transformer oil (for high-voltage side components) |
Utility-scale photovoltaic power plants
Distributed solar generation projects
Commercial and industrial rooftop solar systems
Off-grid and hybrid renewable energy systems
Wind power generation projects (compatible with AC generator inputs)
Our substations operate reliably under the following standard conditions:
Ambient temperature: -40℃ to +45℃
Altitude: ≤4500m (high-altitude models available for elevations above 2000m)
Wind speed: ≤35m/s
Relative humidity: ≤95% daily average, ≤90% monthly average
Pollution levels: Class II, III, IV
Seismic resistance: 8 magnitude
Installation location: Free from fire, explosion hazards, severe pollution, chemical corrosion and violent vibration
We offer comprehensive customization options to meet specific project requirements, including high-altitude adaptations, enhanced corrosion protection for coastal areas, and tailored monitoring systems.
Huachen is a trusted manufacturer of new energy box-type substations with a proven track record in delivering reliable power solutions. All our products strictly adhere to international and national standards, ensuring compliance with global grid codes. We provide end-to-end support from project design to after-sales service, helping our clients achieve faster project completion and lower total cost of ownership.
We offer standard 10kV and 35kV models, with custom voltage solutions available upon request.
With proper maintenance, our substations have a design service life of over 30 years.
Yes, we offer professional on-site installation, commissioning and training services to ensure smooth project deployment.
Ready to find the perfect photovoltaic box-type substation for your renewable energy project? Contact our engineering team today to discuss your specific requirements and receive a detailed, no-obligation custom quote. We will work closely with you to design a solution that meets your project timeline, budget and performance goals.
