1. The prefabricated cabin substation is factory-integrated prefabricated power distribution equipment and is suitable for photovoltaic power stations, wind power projects, data centers, temporary construction sites, and municipal rapid station construction scenarios. 2. The rated voltage of the high-voltage side is 7.2-40.5kV, the low-voltage side is 0.4-35kV, 50/60Hz; the transformer capacity is 500kVA-6300kVA, and the short-term withstand current is matched according to the system configuration. 3. The cabin integrates high and low voltage switch cabinets, transformers, reactive power compensation, temperature control fire protection systems, independent compartments, and the cabinet protection level is IP54, complying with IEC 62271 standards. 4. Each cabinet in the cabin is equipped with a complete five-proof interlock as standard, and is equipped with lighting, ventilation, fire protection, and emergency locking devices to achieve multiple safety protections. 5. The factory has completed pre-assembly and pre-debugging, and only basic wiring is needed on site, which greatly shortens the project construction period and prevents rain, theft and small animals. 6. Modular integrated design, boost, power distribution, compensation, and monitoring modules can be combined and configured as needed. 7. The cabin size and layout can be customized according to on-site working conditions, supporting the expansion of power quality monitoring, fault location, and remote SCADA monitoring functions. 8. Provide a full set of type test reports, technical drawings, basic installation drawings, remote after-sales support and OEM customization services.

Prefabricated Substation — Factory-Integrated Power Distribution Solution for Rapid Deployment

DSY Switchgear's Prefabricated Substation is a fully factory-integrated power distribution unit built for projects that demand speed, reliability, and safety. With a rated high-voltage side of 7.2–40.5kV, low-voltage output of 0.4–35kV, and transformer capacity ranging from 500kVA to 6,300kVA, this compact substation covers a wide range of industrial and utility applications. It complies with IEC 62271, GB/T 17467, GB/T 11022, and GB 7251.3 standards. Backed by 40 dedicated technicians and over 60 patents, DSY has supplied power equipment to State Grid and China Southern Power Grid since 2005.

What Is a Prefabricated Cabin Substation?

A prefabricated cabin substation — also called a compact or packaged substation — is a factory-assembled power distribution unit that integrates all core components into a single, weather-resistant enclosure. It steps high voltage down to usable levels for end-user consumption, eliminating the need for complex on-site civil construction.

Unlike traditional brick-and-mortar substations, every DSY unit is pre-assembled and pre-debugged at the factory. When it arrives on site, you only need to complete basic wiring and foundation work. That's it — no complicated commissioning, no multiple vendor coordination.

This approach reduces installation time by over 80% compared to conventional civil substations, making it ideal for time-sensitive or remote projects.

Product Applications

Key Technical Specifications

Parameter	Specification
Rated Voltage (High Side)	7.2kV – 40.5kV
Rated Voltage (Low Side)	0.4kV – 35kV
Rated Frequency	50Hz / 60Hz
Transformer Capacity	500kVA – 6,300kVA
Short-Time Withstand Current	Up to 50kA / 4s (matched to system config)
Cabin Protection Level	IP54
Compliance Standards	IEC 62271, GB/T 17467, GB/T 11022, GB 7251.3
Structure	Factory pre-assembled, independent compartment separation
Core Configuration	HV/LV switchgear, transformer, reactive power compensation, temperature-controlled fire protection

Certifications

Core Product Advantages

Factory pre-assembly means faster projects. Every cabin is fully assembled and tested before it leaves the factory. Your team handles only the foundation and wiring on site. This dramatically reduces deployment time — your substation can be commissioned within days, not months.

Independent compartment design protects your investment. Each internal section is physically separated. This prevents rain ingress, deters theft, and blocks small animal intrusion — common causes of unplanned outages in field-deployed substations.

Five-proof interlocking as standard. Every cabinet inside the cabin is equipped with a complete five-proof interlock system, along with integrated lighting, ventilation, fire protection, and emergency locking devices. Multiple layers of protection are built in, not bolted on afterward.

Modular configuration for your specific needs. The boost, power distribution, reactive power compensation, and monitoring modules are independently configurable. You can mix and match based on your load profile and site conditions — no forced bundling of features you don't need.

Remote SCADA and smart monitoring ready. The cabin supports expansion for power quality monitoring, fault location, and remote SCADA integration. If your project has digital infrastructure requirements, this unit is designed to grow with it.

Applicable Scenarios

This compact substation solution fits demanding environments where speed and reliability are non-negotiable.

Photovoltaic and wind power projects require fast deployment across large land areas. DSY's modular design lets you scale power distribution capacity as your renewable energy capacity grows.

Data centers need uninterrupted, stable power with built-in monitoring. The temperature control system and remote SCADA capability make this a practical fit for critical infrastructure.

Temporary construction sites benefit from quick setup and easy relocation. Because the unit requires only basic on-site wiring, it can be repositioned as project phases shift.

Municipal and urban rapid deployment projects — where civil construction time is a major constraint — gain a significant schedule advantage with a factory-integrated unit ready to energize within days of delivery.

Customization and Supply Support

DSY understands that no two project sites are identical. The cabin's physical dimensions, primary wiring layout, and functional module configuration are all customizable based on your site conditions and power grid requirements.

You can also specify support for power quality monitoring, fault localization, or full remote SCADA monitoring expansion — making this solution compatible with both traditional grid environments and modern smart grid infrastructure.

Every order comes with a full set of type test reports, technical drawings, and basic installation drawings. Remote after-sales support and OEM customization services are available. Your engineering team gets the documentation needed for approvals, commissioning, and long-term operation without chasing down paperwork.

Packaging & Shipping

Quality Assurance and Documentation

DSY Switchgear has held more than 60 patents since its founding in 2005, with a technical team of 40 engineers representing 20.8% of its total 200-person workforce. The company is a qualified supplier for State Grid and China Southern Power Grid — two of the most demanding procurement standards in the power industry.

Every prefabricated substation unit is factory-tested before delivery. Full type test reports are provided as standard, covering compliance with IEC 62271 and relevant GB national standards. This means you receive a unit that has already been verified — reducing risk during commissioning and simplifying regulatory approval.

Team

Frequently Asked Questions

Q1: How much does factory pre-assembly shorten the on-site construction period?

A: Factory pre-assembly and pre-debugging cut on-site installation time by over 80% compared to traditional civil substations. You only need to complete basic wiring and foundation work before the unit is ready for operation.

Q2: What protection does the cabin offer against environmental hazards?

A: The cabin carries an IP54 protection rating with independent internal compartment separation. This design prevents rain ingress, resists small animal intrusion, and deters theft — keeping your equipment protected in outdoor and remote deployments.

Q3: What safety systems are built into the cabin?

A: Every cabinet inside is equipped with a complete five-proof interlock system as standard. Lighting, ventilation, fire protection, temperature and humidity control, and emergency locking devices are all integrated, providing multiple layers of safety without additional site work.

Q4: Can the substation be customized for my specific project?

A: Yes. Cabin dimensions, primary wiring plans, and functional modules — including reactive power compensation and monitoring — can be configured to match your site conditions and grid requirements.

Q5: Does the unit support remote monitoring and smart grid features?

A: Yes. The cabin supports expansion for power quality monitoring, fault location, and remote SCADA monitoring, making it compatible with both conventional and digitally managed power infrastructure.

Q6: What documentation and after-sales support do you provide?

A: DSY provides a full set of type test reports, technical drawings, and basic installation drawings with every unit. Remote after-sales support and OEM customization services are also available throughout the product lifecycle.

Contact Us

Ready to discuss your Prefabricated Substation project requirements? Reach out to our technical team at [email protected] for specifications, customization options, or a project consultation.