YB-PRE box-type substation (European box-type substation)

YB-PRE Series Pre-Assembled Box-Type Substation

Product Introduction

The YB-type box-type substation, also known as a European-style box-type substation, is manufactured in accordance with GB 17467-1998, “High-Voltage/Low-Voltage Prefabricated Substations,” IEC 1330 and other applicable standards.

As a modern power supply and distribution solution, it provides several advantages compared with traditional civil substations. Its compact size, small installation footprint, integrated structure and convenient relocation help shorten the infrastructure construction period and reduce civil engineering costs.

The box-type substation is simple to install on site, enables rapid power supply and requires only limited maintenance. It can operate without permanent on-site personnel.

The equipment can be installed close to the load center, helping improve power supply quality, reduce power losses and increase the reliability of the distribution system.

The substation performs power transformation, distribution, transmission, metering, compensation, system control, protection and communication functions.

The YB-type substation consists of four main sections: high-voltage switchgear, low-voltage distribution panels, a distribution transformer and an external enclosure.

The high-voltage section uses an air load-break switch. The transformer can be either a dry-type transformer or an oil-immersed transformer.

The enclosure adopts an effective thermal insulation and ventilation structure. It has an attractive appearance and good heat-insulation performance.

Upper and lower ventilation ducts are installed inside the enclosure to reduce the temperature rise caused by outdoor heat in the transformer compartment and the high- and low-voltage compartments.

The enclosure can also be equipped with a temperature-controlled forced ventilation device and an automatic temperature control system.

Each independent unit is provided with control, protection, live indication and lighting systems.

Application Scope

The YB-PRE series is suitable for small unattended substations with voltage levels of 35 kV and below and main transformer capacities of 5,000 kVA and below.

It is widely used in 10 kV ring-network systems for urban industrial substations, 35 kV substations for rural power networks and other similar applications.

Main Functions

The substation performs power transformation, distribution, transmission, metering, compensation, system control, protection and communication.

Main Features

The primary and secondary equipment is pre-installed inside a movable and fully enclosed enclosure with automatic temperature control, corrosion resistance, moisture protection and rust protection.

After delivery to the site, the complete unit only needs to be installed on a prepared concrete foundation.

The product features low investment costs, a short construction period, a small footprint and easy integration with the surrounding environment.

About Yawei

Yawei Group has more than 3,000 employees, including over 300 engineering and technical personnel. The company covers an area of more than 1,200 mu, and the Group’s sales revenue in 2025 was approximately RMB 6 billion. Among them, Jiangsu Yawei Transformer Co., Ltd. achieved annual sales of more than RMB 2.4 billion.

Request a Quote

Order Process

1️⃣Submit Your Requirements

Send us the required transformer type, capacity, voltage, frequency, standards, installation environment, and project details.

2️⃣ Technical Review & Solution Confirmation

Our engineers review your specifications, recommend the appropriate transformer solution, and confirm the technical parameters, drawings, price, and delivery time.

3️⃣ Production & Factory Testing

After order confirmation, we arrange production according to the approved technical documents. Each transformer undergoes strict inspection and routine testing before shipment.

4️⃣Delivery & After-Sales Support

We arrange secure packaging and international shipping, provide complete technical documents, and offer installation guidance and after-sales support.

Professional. Reliable. Project-Focused.

Frequently Asked Questions

1. What types of transformers do you manufacture?

We manufacture power transformers, oil-immersed transformers, dry-type transformers, amorphous alloy transformers, pad-mounted transformers, renewable energy transformers, prefabricated substations, and various special-purpose transformers.

2. Can you customize transformers according to our project requirements?

Yes. We can customize the transformer capacity, input and output voltage, frequency, vector group, cooling method, enclosure, accessories, protection level, and applicable standards according to your project specifications.

3. What information is required to receive a quotation?

Please provide the transformer type, rated capacity, primary and secondary voltage, frequency, number of phases, vector group, impedance, cooling method, installation environment, required standards, quantity, and destination port.

4. What international standards can your transformers meet?

Our transformers can be designed and manufactured according to applicable international and regional standards, including IEC and other project-specific requirements. Different product series may also comply with UL, CE, TÜV, KEMA, and GOST requirements.

5. What tests are carried out before shipment?

Each transformer undergoes strict inspection and routine testing before shipment. Depending on the project, type tests and special tests can also be arranged according to the agreed technical standards.

6. How long does transformer production take?

The production time depends on the transformer type, capacity, technical complexity, quantity, and testing requirements. A detailed delivery schedule will be confirmed after the technical specifications and order are approved.

7. Can you provide technical drawings and documents?

Yes. We can provide approved drawings, technical data sheets, test reports, packing lists, operation manuals, and other documents required for installation, customs clearance, and project acceptance.

8. How are the transformers packed for international shipping?

Transformers are securely packed according to their size, structure, and transportation method. Moisture protection, shock protection, reinforced packaging, and suitable export markings can be provided to reduce the risk of damage during transportation.

9. Do you provide installation and after-sales support?

Yes. We provide remote technical guidance, installation instructions, commissioning support, troubleshooting assistance, and after-sales service. On-site support can also be discussed according to the project requirements.

10. How can I start a transformer project with you?

Send us your technical specifications, drawings, or project requirements. Our engineering team will review the information, recommend a suitable solution, and provide a quotation, technical proposal, and estimated delivery time.