YB27-12 Combined American Type Prefabricated Substation

A Prefabricated Distribution Substation is a factory-assembled power distribution solution that integrates a transformer, medium voltage switchgear, low voltage switchgear, protection equipment, control systems, and auxiliary components into a compact prefabricated enclosure.

It is designed to simplify transportation, installation, commissioning, and operation, making it suitable for utility power distribution, industrial plants, commercial buildings, solar power plants, wind farms, data centers, mining projects, and infrastructure applications.

A conventional substation generally requires more equipment installation and construction work at the project site.

A prefabricated substation is largely assembled and tested in the factory before delivery. This can reduce on-site construction and wiring work, shorten installation time, simplify project coordination, and improve manufacturing quality control.

It is particularly useful for projects where space, installation time, transportation, or construction conditions are limited.

The configuration can be customized, but a typical prefabricated distribution substation may include:

• Power transformer
• Medium voltage switchgear
• Low voltage switchgear
• Ring main unit
• Circuit breaker
• Load break switch
• Protection relay
• Metering system
• Busbar system
• Surge protection
• Control and monitoring system
• Auxiliary power system
• Lighting and ventilation system
• Prefabricated enclosure

The final configuration is determined according to the customer’s single-line diagram, electrical specifications, application, and local grid requirements.

LBAJI can integrate both oil-immersed transformers and dry-type transformers into prefabricated substations.

Oil-immersed transformers are commonly used for utility, industrial, renewable energy, and outdoor distribution applications.

Dry-type transformers are often selected for commercial buildings, data centers, indoor installations, and projects where fire safety and reduced environmental impact are important.

The substation can be designed for different medium voltage and low voltage systems according to the project requirements.

Common medium voltage levels include:

6kV, 10kV, 11kV, 13.8kV, 15kV, 20kV, 22kV, 24kV and 35kV.

The secondary voltage can also be customized according to the local distribution system, such as 400V, 415V, 480V, 690V and other low voltage requirements.

LBAJI can provide different transformer capacities according to the project’s electrical load.

Common capacities include:

100kVA, 160kVA, 250kVA, 315kVA, 400kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1250kVA, 1600kVA, 2000kVA and above.

For large industrial and renewable energy projects, multiple-transformer configurations can also be considered.

Yes. Depending on the transformer design and project requirements, customers can select copper or aluminum windings.

Copper windings generally provide excellent electrical conductivity and mechanical strength, while aluminum windings can offer a more economical solution.

The appropriate winding material can be selected according to the required performance, budget, operating conditions, and project specifications.

Yes.

The MV and LV switchgear can be configured according to the customer’s electrical system, including:

• Rated voltage
• Rated current
• Short-circuit capacity
• Circuit breaker type
• Protection relay
• Metering
• Busbar configuration
• Cable entry and exit
• Control and communication requirements

Customers can provide their single-line diagram or technical specification, and LBAJI can develop the corresponding configuration.

Yes.

Prefabricated substations are widely used in solar photovoltaic power plants because they can integrate transformers, MV switchgear, LV equipment, protection, monitoring, and auxiliary systems into a compact solution.

They can help simplify electrical integration between the PV generation system and the grid or local distribution network.

Yes.

For wind power projects, prefabricated substations can be designed according to the project’s collection voltage, transformer capacity, grid connection requirements, protection system, and environmental conditions.

The solution can be customized for wind farms, distributed wind power systems, and renewable energy collection systems.

Yes.

They are commonly suitable for factories, manufacturing facilities, warehouses, mining operations, oil and gas facilities, and other industrial applications.

A customized configuration can provide medium voltage incoming power, transformer voltage conversion, low voltage distribution, protection, metering, and monitoring within one integrated system.

Yes.

Prefabricated substations can be configured for commercial buildings, shopping centers, office buildings, hospitals, data centers, and other critical facilities.

For these applications, the design can place greater emphasis on reliability, protection, redundancy, fire safety, monitoring, and continuous power availability.

Yes.

Mining projects often require reliable power distribution in remote and demanding environments.

The enclosure, transformer, switchgear, ventilation, corrosion protection, and protection system can be customized according to the temperature, dust, altitude, humidity, transportation, and site conditions.

Yes.

Customization is one of the main advantages of LBAJI’s prefabricated substation solutions.

The following can be customized:

• Transformer capacity
• Transformer type
• Primary and secondary voltage
• Frequency
• MV switchgear
• LV switchgear
• Protection system
• Metering system
• Enclosure dimensions
• Cable entry arrangement
• Ventilation system
• Fire protection
• Monitoring system
• Communication system
• Internal layout

Yes.

Customers can provide a single-line diagram, general arrangement drawing, technical specification, equipment list, or project tender document.

LBAJI’s engineering team can review the information and develop the equipment configuration according to the project requirements.

Yes.

If you do not have a complete technical specification, you can provide basic information such as:

Power capacity + input voltage + output voltage + frequency + application + quantity + project location.

Based on this information, the engineering team can help recommend a suitable transformer and switchgear configuration.

Yes.

The enclosure dimensions can be designed according to the internal equipment arrangement, transportation limitations, installation location, maintenance space, cable routing, ventilation requirements, and local regulations.

For projects with limited installation space, a compact layout can be developed.

The substation can be designed and manufactured according to applicable international and regional standards.

Depending on the equipment configuration and destination market, relevant IEC standards and local electrical regulations can be considered.

Customers can specify required standards, testing procedures, certification requirements, and grid codes before production.

The protection system can include:

• Overcurrent protection
• Short-circuit protection
• Earth-fault protection
• Transformer protection
• Surge protection
• Circuit breaker protection
• Fuse protection
• Temperature monitoring
• Other customized protection functions

The protection scheme is selected according to the voltage level, transformer capacity, grid configuration, and project requirements.

Yes.

The electrical equipment can undergo factory testing before shipment according to the applicable standards and agreed technical requirements.

Testing may include transformer tests, insulation tests, switchgear operation tests, wiring checks, protection function checks, and other required inspections.

This helps reduce potential problems during installation and commissioning at the project site.

Yes.

Depending on the project requirements, LBAJI can provide relevant technical documents such as:

• Technical specifications
• Single-line diagrams
• General arrangement drawings
• Foundation drawings
• Wiring diagrams
• Equipment lists
• Factory test reports
• Inspection documents
• Operation manuals
• Installation instructions
• Maintenance documentation

Yes.

Prefabricated substations are commonly designed for outdoor installation.

The enclosure can be customized according to the local environment, including waterproofing, dust protection, ventilation, cooling, anti-corrosion treatment, temperature control, and other environmental requirements.

Yes.

The design can take local environmental conditions into consideration, including:

• Ambient temperature
• Humidity
• Rainfall
• Dust
• Salt spray
• Altitude
• Corrosive environments
• Solar radiation

Customers should provide the project location and environmental conditions so the equipment can be properly designed.

The transportation method depends on the overall dimensions, weight, equipment configuration, and destination.

LBAJI can provide relevant dimensions, weight, lifting points, packing information, loading requirements, and transportation documentation to support international logistics planning.

Because major components can be assembled and tested before shipment, on-site installation can be significantly simplified compared with a conventional site-built substation.

The actual installation time depends on the foundation preparation, equipment configuration, cable connections, site conditions, and commissioning requirements.

Yes.

A suitable foundation is normally required to support the equipment and ensure safe and stable installation.

LBAJI can provide foundation interface dimensions and installation drawings according to the final substation configuration.

Yes.

LBAJI can provide an integrated solution covering:

Engineering Design → Equipment Selection → Manufacturing → Factory Testing → Packing → Delivery → Technical Documentation

The exact project scope can be customized according to the customer’s requirements.

Yes.

Customers can purchase a complete prefabricated substation or procure individual products such as:

• Oil-immersed transformers
• Dry-type transformers
• MV switchgear
• LV switchgear
• Ring main units
• Box-type substations
• PV electrical equipment

This provides flexibility for EPC contractors, distributors, system integrators, and electrical equipment importers.

Yes.

OEM and customized solutions can be discussed according to project requirements.

Customization may include equipment configuration, enclosure design, nameplates, documentation, electrical specifications, and other applicable requirements.

For an accurate quotation, please provide as much of the following information as possible:

• Transformer capacity
• Primary voltage
• Secondary voltage
• Frequency
• Transformer type
• Quantity
• MV switchgear requirements
• LV switchgear requirements
• Protection requirements
• Application
• Project location
• Applicable standards
• Delivery destination

If you do not have all the information, simply send us your project requirements or single-line diagram. Our engineers can help evaluate the suitable solution.

LBAJI provides integrated electrical equipment solutions covering transformers, medium voltage switchgear, low voltage switchgear, box-type substations, photovoltaic electrical equipment, and other power distribution products.

With manufacturing and engineering capabilities, LBAJI can coordinate multiple electrical components within one prefabricated solution, helping customers simplify equipment procurement, system integration, installation, and project management.

Our solutions can be customized for utility, renewable energy, industrial, commercial, infrastructure, mining, and other power distribution applications.

LBAJI supplies customized prefabricated distribution substations for international projects and supports OEM, project-based, EPC, distributor, and industrial procurement requirements.

Customers can submit their voltage, transformer capacity, application, quantity, destination country, and technical requirements for evaluation and quotation.

The price depends on the transformer capacity, voltage level, transformer type, winding material, MV and LV switchgear configuration, protection system, enclosure dimensions, standards, quantity, and delivery destination.

For this reason, a project-specific quotation is more accurate than a standard product price.

Lead time depends on the substation configuration, transformer capacity, customization requirements, quantity, testing requirements, and production schedule.

After receiving the technical specifications, LBAJI can provide a project-specific production and delivery schedule.

Yes.

You can send your single-line diagram, technical specification, tender document, equipment list, or basic project requirements.

LBAJI’s engineering team can review the information and recommend a suitable prefabricated substation configuration.