Box-type substations, also known as prefabricated substations, are compact power distribution units that integrate high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment into a single factory-prefabricated assembly. Designed for both indoor and outdoor applications, these units follow a specific wiring scheme to organically combine transformer step-down and low-voltage power distribution functions. Housed in a fully enclosed, movable steel enclosure that is moisture-proof, rust-proof, dust-proof, rat-proof, fire-proof, anti-theft, and heat-insulated, box-type substations are available in three main types: European-style, American-style, and underground.

Product Introduction

The European-style box-type substation, also known as an outdoor prefabricated substation or a compact combined substation, offers multiple advantages, including flexible configuration, easy transport and relocation, simple installation, short construction time, low operational costs, a small footprint, zero pollution, and no need for routine maintenance. These features have attracted widespread interest. In rural power grid construction and renovation projects, it is extensively used in the development and upgrading of 10–110 kV small and medium-sized substations and distribution stations, as well as in industrial and mining power supply systems and mobile power operations in both urban and rural areas.

Since this type of substation can be easily placed close to load centers, it helps shorten power supply distances and improve terminal voltage quality. Therefore, it is particularly well-suited for the modernization of rural power grids.

Product Features 

1.Advanced technology,safe and reliable
The outer shell is generally made of galvanized steel plate.The frame adopts standard container materials and manufacturing techniques.It has good anti-corrosion performance and guarantees no corrosion for 20 years.and can ensure normal operation in the harsh environment of-40℃~+40℃ .

2. High degree of automation
The  protection system  adopts the  integrated  automatic device of the substation and  is  installed  in  a decentralized manner.remote setting of operating parameters,control of humidity and temperature in the box,to meet the requirements of unattended.

3. Factory prefabrication
All equipment is installed and qualified in the factory at one time.The entire substation takes about 5-8 days from installation to commissioning.Greatly shorten the construction period.

4.Flexible combination
Due to the compact structure of the European-style box change,each box constitutes an independent system,which makes the combination flexible and changeable.

5.Low investment and quick results
European-style  box  substation(35kV equipment outdoor layout,10kV equipment box installation), compared with the same scale integrated substation (35kV equipment outdoor layout,10kV equipment layout indoor high-voltage switch room and central control room),reduces investment by 40%-50%.

6. Cover small space
The minimum area of the main transformer box and the switch box can be as small as 100m.It can be installed and put into production by making full use of the center of the street,the square and the corner of the factory,which is in line with the national land saving policy.

7.Beautiful appearance
The box shell adopts aluminum-zinc steel plate and container manufacturing technology.The appearance design is beautiful.Under the premise of ensuring the reliability of power supply,by choosing the shell color of the box-type substation,It is especially suitable for urban construction.

Key features Environment

Epoxy resin — a non-flammable, flame-retardant, and self-extinguishing solid insulating material — forms the core of our dry-type transformers. This design delivers oil-free, non-flammable operation with outstanding performance advantages:

1. Safety & Environmental Friendliness
Safe, fireproof, and pollution-free
Can be installed directly at load centers without special fire protection rooms
2. Superior Mechanical & Electrical Strength
High mechanical strength and strong short-circuit withstand capability
Low partial discharge, excellent thermal stability
Long service life with high reliability

3. Energy Efficiency & Low Noise
Low operating loss and noticeable energy-saving effect
Low noise level, suitable for noise-sensitive environments
Maintenance-free operation

4. Excellent Thermal Performance & Overload Capacity
Good heat dissipation
Strong overload capability; forced air cooling enables higher capacity output

5. Moisture Resistance
Performs reliably in high-humidity and harsh environmental conditions

6. Smart Temperature Control System
Intelligent signal-based temperature monitoring
Automatically detects and displays operating temperatures of three-phase windings
Auto start/stop of cooling fans
Built-in alarm and trip functions for over-temperature protection

7. Compact & Lightweight Design
Small footprint and light weight
Reduced installation costs and space requirements
Applicable Operating Conditions
 

Product parameters