Product Overview
The Chinese-style photovoltaic box transformer is designed by learning from the excellent heat dissipation performance of American transformers and the perfect protection function of European transformers, optimizing the compact structure,solving the problems of lack of protection of American transformers and poor heat dissipation of European transformers, and has broad market prospects.
Product Features
The Chinese photovoltaic box transformer is divided into three parts: high voltage room, low voltage room, and transformer, arranged in an "L" shape or pin "shape" configuration. This design ensures optimal space utilization and easy installation.
The main body and heat sink of the Chinese photovoltaic box transformer are exposed outside the box, providing excellent heat dissipation. All other live compartments are sealed in independent compartments, ensuring safety and efficiency. Each room is separated by partitions, and a manhole is provided in the electrical box transformer to facilitate installation and maintenance.
The photovoltaic box is constructed from cold-rolled steel or stainless steel plate, electrostatically sprayed for durability. The inner and outer surfaces are smooth, resistant to rust, coating shedding, and bump damage. The coating layer is firm and uniform, ensuring a high-quality finish with no obvious contrast reflection, enhancing the overall aesthetics and functionality of the PV box transformer.
The Main Parameters
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Rated capacity(kVA) |
High voltage/Low voltage |
630~800 |
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|
Voltage(kV) |
Rated voltage on high voltage side |
35(36,36.75,37,38.5) |
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|
System maximum operating voltage |
40.5 |
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Rated voltage on low voltage side |
For wind power generation |
0.69(0.95,1.14) |
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|
For photovoltaic power generation |
0.48,0.5,0.54,0.6(0.63,0.8) |
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Rated insulation level(kV) |
High-voltage switch side power frequency withstand voltage |
95 |
|
|
Transformer body power frequency withstand voltage |
85 |
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Impulse peak withstand voltage |
200 |
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Transformer low voltage side power frequency withstand voltage |
5200 |
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Connection Group |
For photovoltaic power generation |
Dy11 or Yd11;Dyn11,Dy11y11 or yd11d11 |
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|
Protection level |
Oil tank |
IP68 |
|
|
High and low voltage chamber |
IP54 |
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After the high voltage chamber door is opened |
IP3X |
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Rated frequency(Hz) |
50/60 |
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Number of phases |
Three-phase |
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Application Scenarios
Large‑scale Ground‑mounted Solar Power Plants
Ideal utility‑scale solar farm deployment. It completes step‑up voltage conversion for photovoltaic arrays and feeds generated power into the public grid, adapting to open‑air, high‑temperature outdoor operating conditions.
Distributed PV Power Generation Projects
Suitable for rooftop distributed photovoltaic systems for industrial factories, commercial parks, and industrial rooftops. Compact footprint fits limited project land while delivering reliable grid‑connection.
Complex Terrain Solar Projects
Works well for hilly, desert and high‑temperature solar sites. Its optimized heat‑dissipation structure effectively handles prolonged high‑ambient‑temperature working environments.
New Energy EPC & Overseas PV Projects
Adapts to international solar EPC tender requirements. Balanced protection and thermal performance solves typical pain points of traditional American‑style and European‑style box transformers for global photovoltaic installations.
Why Choose LVMA Transformer
Zhejiang Lvma Electric Co., Ltd BS Chinese‑style photovoltaic box transformer integrates the merits of American‑style and European‑style box‑type solutions, overcoming their respective inherent drawbacks for solar power applications.
Hybrid optimized design, solving traditional product pain points
It inherits outstanding heat‑dissipation advantages of American‑style box transformers and complete protection functions of European‑style units. Effectively fixes insufficient protection of American‑type and poor heat dissipation of European‑type photovoltaic box substations.
Compact integrated structure for PV scenarios
Factory pre‑integrated design combines transformer, high‑voltage switchgear, low‑voltage components and protection devices. Compact layout saves land occupation for solar power plants.
Excellent adaptability for harsh solar‑site environments
Reinforced heat‑dissipation structure performs stably under continuous high‑temperature, strong‑sunlight outdoor conditions, lowering overheating risk during peak photovoltaic power‑generation periods.
Overseas new‑energy project track‑record
Our BS photovoltaic box transformers have been supplied to multiple overseas solar farm EPC projects, delivering stable grid‑connection performance for utility‑scale PV installations across hot‑climate regions.
Complete documentation & technical support
We provide full English datasheets, installation drawings, type‑test reports and remote technical guidance to support bidding, site commissioning and daily maintenance for international customers.
Installation
BS Chinese Photovoltaic Box Transformer is fully pre‑assembled and tested inside factory, reducing heavy on‑site assembly work for solar‑field construction.
Foundation Preparation
Build load‑bearing flat concrete foundation per drawing specifications. Ensure reliable drainage to prevent rainwater accumulation. Keep enough surrounding clearance for heat dissipation, inspection and maintenance. Good ventilation space around radiator modules must be reserved.
Lifting and Positioning
Use designated lifting points for hoisting. Avoid impact to radiators and cabinet housing. Place equipment horizontally onto foundation, keep radiator side unobstructed for air circulation.
Earthing Connection
Connect cabinet earthing terminals reliably to project grounding grid following IEC safety requirements. Proper earthing guarantees fault‑protection performance and operator safety.
Cable Termination & Wiring
Complete PV high‑voltage grid‑connection cable wiring strictly according to wiring schematic. Apply correct torque on all connection terminals. Keep cable routing away from high‑temperature radiator areas.
Pre‑energization Inspection
Check radiator assembly, cabinet sealing, locking mechanism and all internal protection settings. Test insulation resistance and protection‑device functions before power‑on. Confirm no barriers blocking heat‑dissipation air channels.
Energization & Acceptance
Carry out step‑by‑step energization test. Monitor operating temperature during trial run. Hand‑over technical documents after passing acceptance.
Note: All installation, commissioning work must be operated by certified professional electrical technicians.
Optional Configuration
Transformer Unit Options
Multiple capacity grades and voltage ratios customized for PV grid‑connection; oil‑immersed distribution transformer as standard, with special anti‑overload configuration to adapt photovoltaic intermittent output characteristics.
Protection & Control Modules
Optional comprehensive protection relay, anti‑islanding protection device, over‑voltage / over‑current protection elements which are essential for photovoltaic grid‑tied systems.
Intelligent Monitoring System
Optional RTU remote terminal unit, data communication interface, temperature monitoring sensor. Supports real‑time uploading of transformer temperature, operating status and fault alarms for smart solar‑plant management.
Cabinet & Environmental Adaptation Options
Custom RAL cabinet paint color; anti‑corrosion, anti‑UV coating for desert, coastal salt‑fog sites; optional sun‑shade baffle for radiator to resist intense solar radiation.
Auxiliary Accessories
External anti‑condensation heater, cabinet dehumidifier, internal cabinet lighting, lightning‑protection assemblies, custom‑made foundation frame for solar‑field open‑air installation.
All optional configurations can be combined according to project local grid‑connection standards and site environmental conditions.
FAQ
Q: What is the lead time for ZN63A-VS1-12 VCB?
A: It absorbs the excellent heat‑dissipation performance of American‑style box transformers and comprehensive protection features of European‑style products. It solves the weak protection shortcoming of American‑type and poor heat‑dissipation defect of European‑type units, especially suitable for long‑time high‑temperature operation of photovoltaic power stations.
Q: Can this unit work in desert high‑temperature solar farms?
A: Yes. Optimized radiator structure provides superior heat dissipation. You can additionally select UV‑resistant cabinet coating and radiator sun‑shade baffles for desert intense sunlight scenarios.
Q: Do you support custom capacity and voltage ratio for special PV grid‑access requirements?
A: Custom capacity, voltage combination and anti‑overload configuration are available, tailored for utility‑scale ground‑mount or distributed photovoltaic projects to meet local grid‑connection codes.除
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