Outdoor Compact Prefabricated Substation (Box-type Substation)
All-in-One Outdoor Power Distribution Solution for Fast Deployment & Reliable Field Operation
Product Overview
Our outdoor compact prefabricated substation is a fully integrated, factory-assembled power distribution unit that combines medium-voltage switchgear, a power transformer and low-voltage distribution systems into a single weatherproof enclosure. Designed for 6kV / 10kV / 20kV AC distribution networks, it fulfills power reception, voltage transformation and distribution functions. With a space-saving structure and pre-wired, pre-tested design, it drastically reduces on-site installation workload and construction cycles, making it the ideal choice for outdoor power supply scenarios requiring high reliability and rapid deployment.
Core Features
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All-in-One Prefabricated Design for Fast Commissioning
The unit integrates an MV switchgear room, transformer room and LV distribution room in one compact cabinet. Fully assembled, wired and function-tested in the factory, it only requires simple on-site cabling and grounding to go into operation, significantly cutting construction time and on-site labor costs. Its compact footprint saves up to 70% of land occupation compared with traditional civil-built substations.
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Weatherproof Enclosure for Harsh Outdoor Conditions
The outer enclosure is constructed from high-quality cold-rolled steel (aluminum alloy optional) with multi-layer anti-corrosion coating. With a standard IP54 protection grade, it effectively resists rain, dust, rust and UV radiation. It delivers stable performance across extreme temperatures, humidity and harsh open-air environments, ensuring long-term reliable service in outdoor sites.
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Full Safety Interlocks & Protection
The MV compartment is equipped with a complete “five-prevention” mechanical interlock system to prevent misoperation and protect operators during maintenance. The system integrates overload, short-circuit, over-temperature and earth-fault protection functions. Its fully insulated, fully enclosed MV structure eliminates exposed live parts, greatly enhancing operational safety.
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Highly Flexible Custom Configuration
We support full customization to match project-specific requirements. MV units can be configured with load break switches, vacuum circuit breakers or ring main units; transformers are available in dry-type or oil-immersed versions with capacities from 100kVA to 2500kVA; LV outgoing circuits, metering functions and reactive power compensation modules can all be tailored to fit different distribution schemes.
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Easy Operation & Low Maintenance
All compartments adopt a front-access design with independent doors, allowing convenient operation, inspection and component replacement without interrupting other units. The modular structure enables quick troubleshooting and part replacement, minimizing downtime and reducing long-term operation and maintenance costs.
Technical Specifications
- Rated voltage (MV side): 6kV / 10kV / 20kV, 50/60Hz
- Rated voltage (LV side): 0.4kV / 0.23kV
- Transformer capacity: 100kVA ~ 2500kVA (customizable)
- Transformer type: Dry-type / Oil-immersed (optional)
- MV switchgear type: Load break switch / Circuit breaker / Ring main unit
- Protection grade: Outer enclosure IP54, MV compartment IP3X
- Cooling method: Natural air cooling
- Installation: Outdoor floor-mounted
- Protection functions: Overload, short-circuit, over-temperature, earth fault protection
Typical Applications
- Power distribution for industrial parks, commercial complexes and residential communities
- Power supply for municipal facilities, street lighting and public infrastructure
- Grid connection and distribution for photovoltaic, wind power and other new energy projects
- Temporary power supply for construction sites, mining areas and oilfields
- Urban and rural power grid renovation and upgrading projects
- Power distribution for scenic areas, highways and remote outdoor locations
Every outdoor substation undergoes strict factory testing and full-load verification before delivery. We provide end-to-end services from scheme design and customized configuration to on-site installation guidance and after-sales technical support, delivering reliable, space-saving and cost-efficient outdoor power distribution solutions for your projects.
