Weisho Electric Co., Ltd.
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YB6-12/0.4 Photovoltaic Box Transformer for Solar Power Stations

☀️ All-in-One PV Substation Solution for 11–33kV Solar Grids

The YB6-12/0.4 Photovoltaic Box Transformer Substation is a fully integrated power conversion unit tailored for solar photovoltaic plants and hybrid energy systems. It combines a step-down oil-immersed transformer, MV switchgear, LV distribution cabinet, and optional energy storage interface in a weatherproof steel enclosure.

Optimized for outdoor use in solar farms, desert PV arrays, rooftop clusters, and containerized battery storage systems, this prefabricated substation ensures fast deployment, simplified logistics, and cost-effective grid connection.


🔧 Technical Parameters

Specification ItemYB6-12/0.4 Typical Configuration
High Voltage Level6kV / 10kV / 11kV / 20kV / 33kV
Low Voltage Output0.4kV / 0.69kV / 0.8kV
Rated Transformer Capacity500kVA / 800kVA / 1000kVA
Transformer TypeOil-immersed, ONAN cooling
Enclosure MaterialGalvanized steel or aluminum
MV SwitchgearSF6 / vacuum circuit breaker
LV CabinetAC output + SPD + metering
Protection GradeIP54 (outdoor ready)
Optional ModulePCS, BMS, Communication Unit
StandardsIEC 62271-202, GB/T17467-2020

⚡ Application Scenarios

  • Solar PV Stations (Utility-scale)
    Used in 10MW+ installations for efficient grid integration.

  • Industrial Rooftop PV + Storage
    Enables peak shaving and time-shifting with energy storage in factories.

  • Remote Desert or Plateau Sites
    Salt-resistant, corrosion-protected enclosures support extreme conditions.

  • Containerized Hybrid Systems
    Easily paired with battery cabinets or microgrid solutions.


📌 Unique Advantages

  • Rapid Installation: Delivered pre-assembled for plug-and-play setup.

  • Custom Layouts: Modular design fits multiple inverter brands and battery types.

  • Thermal Optimization: Ventilation ducts and air-conditioning are optional.

  • Smart Monitoring: Integrated sensors and RS485/Modbus support.

  • Safety Assured: Equipped with grounding, arc protection, and anti-theft doors.


✅ Verified Customer Feedback

🔹 Liam T. – Project Manager, EDF Renewables UK
"Reliable substation design, especially for utility-scale PV in the Midlands."

🔹 Angela M. – Energy Solutions Lead, AES Chile
"We integrated it with BYD battery units—smooth interface and high durability."

🔹 Carlos R. – Grid Engineer, Enel Green Power Spain
"All-in-one system helped us reduce project commissioning time by 30%."

🔹 Jack H. – EPC Director, Nexamp USA
"No overheating even under full 45°C desert load. Outstanding thermal control."

🔹 Sophia K. – Senior Procurement, NTPC India
"Customized configuration matched all site needs. IEC reports were complete and valid."


❓ Frequently Asked Questions – YB6-12/0.4 PV Box Substation

• Does it support 33kV grid connection?
Yes, available up to 35kV input voltage.

• Can it be delivered with inverters or batteries?
It can be paired with an inverter skid or a battery skid; we also provide integration design.

• Is certification included?
Yes. GB/T 17467, IEC 62271-202, ISO9001, and type test reports are provided.

• Can it be used in cold or humid climates?
Optional anti-condensation heaters and dehumidifiers are available for wet zones.

• What’s the delivery time?
Typically 15–25 working days, depending on customization.


📞 Contact for Quotation or Technical Drawings

Thor – Electrical Engineer, Wei Shoe Elec
📧 Email: [email protected]
📱 WhatsApp: +86 159 5777 0984
📞 Tel: +86-0577-62788197

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