10KV-36KV Box Type Transformer Substation

The 10KV-36KV Box Type Transformer Substation is one of Sarah Electric’s products. As a professional manufacturer with over 20 years of experience, we offer units covering the voltage ranges most commonly used in global medium-voltage distribution networks. These substations are factory-assembled, eliminating the need for traditional civil engineering construction and ensuring ease of maintenance.

Core Structure

The 10KV-36KV Box Type Transformer Substation features an exterior enclosure designed to be rainproof and dustproof, with customizable protection ratings. The interior is divided into three independent functional compartments separated by fire-resistant partitions:

Why Choose a Box-Type Transformer Substation?

1. Compact Footprint

The footprint of a 10kV–36kV box-type transformer substation is only about one-tenth that of a traditional civil-constructed substation.

Additionally, the enclosure's exterior can be customized with finishes such as faux wood grain, imitation brickwork, or landscape-friendly green tones, allowing it to blend seamlessly into urban communities or scenic parks.

2. Factory Prefabrication

Over 95% of the assembly and electrical testing for this unit is completed at Sarah Electric’s factory.

On-site work is limited to pouring the concrete foundation and connecting cables, reducing installation and commissioning time from months to just a few days.

3. Fully Enclosed Structure

The enclosure offers an ingress protection rating of IP54 to IP66 (customizable to project needs), providing robust protection against dust, rain, small animal intrusion, and theft.

All live high- and low-voltage components are fully insulated and enclosed to prevent accidental contact by personnel.

4. Suitable for Extreme Environments

We utilize highly corrosion-resistant enclosure materials—such as stainless steel, hot-dip galvanized steel, or aluminum-zinc alloy—capable of withstanding harsh conditions, including high-salinity coastal air, desert heat, and the severe climates of frigid regions.

Technical Specifications

Box-type Substations vs. Traditional Civil-built Substations: Key Differences

Application Scenarios

1. Urban Power Distribution Systems

Traditional substations require significant space, whereas urban land resources are limited; 10kV–36kV box-type transformer substations enable distributed power supply.

Power supply flow: 10kV urban distribution grid → Box-type substation → 400V low-voltage distribution → End users

2. Industrial Parks and Manufacturing Plants

Box-type substations can power large-scale equipment and reduce transmission losses; their pre-assembled design also facilitates future expansion.

Suitable for: Automotive manufacturing, machining, electronics factories, food processing, chemical enterprises, logistics and warehousing, etc.

Power supply flow: 35kV industrial grid → 35kV box-type substation → 10kV/0.4kV power supply system → Production equipment

3. New Energy Projects

Suitable for: Photovoltaic (PV) power plants, wind power generation, energy storage projects

PV project application: Solar panels → PV inverter → 35kV box-type substation → Step-up & grid connection → Power grid

Wind farm application: Wind turbine → Box-type substation → 35kV collection lines → Step-up station → Power grid

4. Infrastructure Projects

Box-type substations allow for outdoor installation, rapid deployment, and easy maintenance, providing independent and stable power for large-scale infrastructure.

Suitable for: Expressways, airports, ports, terminals, etc.

5. Power Supply for Mines and Remote Areas

These substations can be transported as complete units and have short installation cycles; customizable protection ratings allow them to withstand harsh environments, making them ideal for temporary mining sites and newly developed areas.

6. Temporary Construction Power Supply

Building a permanent substation takes a long time, whereas box-type substations are factory-prefabricated, ready for direct on-site installation, and can be relocated after the project concludes.

Sarah Electric Customization Capabilities

Sarah Electric provides customized 10KV-36KV Box Type Transformer Substation solutions tailored to specific national grid standards, project environments, and load requirements. Customization options include:

1. Voltage Rating Customization

Medium-voltage input: Supports 10kV, 11kV, 12kV, 20kV, 24kV, 33kV, 35kV, 36kV

Low-voltage output: 0.4kV, 0.415kV, 0.48kV

2. Transformer Capacity Customization

Standard configurations: 100kVA, 250kVA, 500kVA, 800kVA, 1000kVA, 1600kVA, 2000kVA, 2500kVA

Higher-capacity solutions can be designed for large-scale industrial projects; requirements such as maximum load power, future expansion needs, operating load factor, and grid planning specifications must be determined.

3. Transformer Type Customization

Choice of oil-immersed transformers or dry-type transformers based on the operating environment and project requirements.

4. High-Voltage Switchgear Configuration Customization

Standard solution: Load break switch, fuse protection

High-reliability solution: Vacuum circuit breaker, protection relay

Optional configurations: Surge arrester, CT/PT (current/voltage transformers), grounding switch, interlocking protection system

5. Enclosure Structure Customization

Material selection: Galvanized steel plate, stainless steel enclosure, aluminum alloy structure

Ingress protection (IP) rating: Customizable to IP33, IP43, IP54, or IP55

6. Appearance and Dimensions Customization

Enclosure dimensions, layout of high- and low-voltage compartments, cable entry/exit methods, door structure, and equipment arrangement can be adjusted based on site installation conditions.

7. Customized Intelligent Monitoring Systems

To meet smart grid requirements, the following features can be added:

Online monitoring: Transformer temperature monitoring, oil level monitoring, partial discharge detection, and electrical parameter acquisition

Communication functions: Support for RS485, Modbus, Ethernet, and SCADA system interfaces

8. Customized Environmental Adaptability

High-temperature regions: Enhanced heat dissipation systems and forced-air cooling

Cold regions: Anti-condensation heating devices and thermal insulation design

Coastal regions: Anti-corrosion coatings and salt-spray resistant design

High-altitude regions: Optimized insulation levels, heat dissipation capabilities, and air clearances

9. Customized Standards and Testing

Sarah Electric provides comprehensive test reports based on project requirements, including:

Design compliant with IEC standards

Type tests

Factory acceptance test reports

Electrical performance tests

Insulation tests

Temperature rise tests

FAQ

Q: What is the service life of a 10KV-36KV Box Type Transformer Substation?

A: Under conditions of normal operation and regular maintenance, the design service life can exceed 20–30 years.

Q: What are the requirements for installing a box-type transformer substation?

A: Before installation, it is necessary to verify the foundation platform dimensions, cable entry and exit methods, grounding system, ventilation and heat dissipation conditions, transport access, and installation space; compliance with local electrical installation standards is also required.

Q: Can 10kV–36kV box-type transformer substations be used for photovoltaic projects?

A: Yes. In renewable energy projects, box-type transformer substations are commonly used to aggregate inverter output, step up the voltage level, and connect to the power grid.