Complete Box-Type Substation Purchasing Guide | European & American Type Difference + Internal Equipment Introduction

1. What is a Box-Type Substation?

A box-type substation is a prefabricated integrated power distribution equipment. It integrates high-voltage distribution, power transformation, low-voltage output and intelligent control systems. Featuring compact structure, easy installation, outdoor maintenance-free performance and beautiful appearance, it is widely used in municipal engineering, industrial parks, solar power stations and commercial projects worldwide.

According to structural design, it is mainly divided into European-type substation and American-type substation. Many beginner buyers cannot distinguish their structure, capacity, cost and application environment. This article explains them in simple and clear language.

2. European VS American Substation

2.1 Structural Difference

European Type (YBM): Adopts three-compartment independent structure, including high voltage room, transformer room and low voltage room. Separated by metal plates with large maintenance space and strong expandability. Air insulation ensures high safety performance.

American Type (ZGS): Adopts integrated common-tank structure. High-voltage switches and fuses are immersed in transformer oil. Ultra-small size, fully sealed and fully insulated. Its floor area is only one-third of the European type.

2.2 Performance & Application

Items	European Substation	American Substation
Size	Large and elegant appearance	Small and compact
Transformer Type	Oil-immersed & Dry-type	Only oil-immersed type
Capacity Range	250kVA–2500kVA	50kVA–800kVA
Maintenance	Easy daily maintenance	Maintenance-free, hard to disassemble
Application	Commercial complex, factory, solar station	Construction site, narrow area renovation
Popular Markets	Middle East, Southeast Asia, Africa	America, island area, small distribution project

2.3 Purchasing Suggestion

Choose European substation for long-term stable power supply, beautiful appearance and later capacity expansion. Choose American substation for limited space, temporary power supply and lower budget.

3. Internal Equipment & Common Models

3.1 High Voltage Equipment

High voltage parts control power incoming, breaking and short-circuit protection.

Ring Main Unit: HXGN15, XGN15
Load Switch: SF6 Insulated Load Switch
High Voltage Fuse: XRNT Series
Lightning Arrester: HY5WS

3.2 Main Power Transformer

We supply full-copper energy-saving transformers, suitable for high temperature, sandy and humid overseas environments.

Laminated Core Transformer: S11, S13, S20
Three-Dimensional Wound Core Transformer: S20-M.RL, S22-M.RL (Low loss & low noise)
Amorphous Core Transformer: SBH21, SBH25 (Ultra-low no-load loss)

Common Capacity: 50kVA, 100kVA, 200kVA, 315kVA, 400kVA, 630kVA, 1250kVA, 1600kVA

3.3 Low Voltage Equipment

Low Voltage Cabinet: GGD, MNS
Main Circuit Breaker: DW45 Intelligent Breaker
Reactive Power Compensation Cabinet: Automatic capacitor compensation

3.4 Auxiliary Control System

DC Panel: GZDW, provides emergency DC power for high voltage switches
Temperature & Dehumidification System: Anti-condensation, high temperature resistance
Intelligent Monitoring Terminal: Remote data collection and real-time monitoring

4. Main Overseas Sales Markets

All products comply with IEC international standards and Saudi SASO standards. Main export regions:

Middle East: Saudi Arabia, UAE, Qatar; high temperature and sand resistance for Vision 2030 construction.
Southeast Asia: Vietnam, Philippines, Cambodia; urbanization and solar power renovation.
Africa: Nigeria, Kenya; cost-effective European substations in large demand.
America: American-type compact substations for residential and temporary construction.

5. Consulting Guidance for New Buyers

New buyers are easily confused about capacity, voltage, material, protection grade and accessory configuration. Different countries have different voltage standards, climates and installation regulations. Improper selection will cause extra cost and customs failure.

If you are a new buyer, project contractor or foreign trade agent, please contact our professional customer service team.

We provide free selection solutions, equipment lists, engineering drawings, English data sheets and formal quotations. Custom voltage, frequency, protection grade and shell color are acceptable. Professional one-to-one engineer service, no hidden charges. Welcome inquiry.