A box-type substation, also widely recognized as a prefabricated substation, is a compact indoor/outdoor power distribution solution pre-engineered in factories based on specific wiring configurations. At its core lies the distribution substation transformer, integrated seamlessly with high-voltage switchgear and low-voltage distribution devices—three key components that define its functionality and efficiency.
This all-in-one system is housed in a fully enclosed, movable steel structure box engineered for maximum protection. The robust enclosure offers comprehensive defense against moisture, rust, dust, rodents, fire, and theft, while also providing excellent thermal insulation. These features make it an ideal choice for urban power grid construction and renovation projects, where reliability and space efficiency are paramount.
Our prefabricated substation, centered on the high-performance distribution substation transformer, fully adheres to GB/T17467-1998 “High Voltage/Low Voltage Prefabricated Substation” and IEC1330 standards. This compliance ensures consistent quality, safety, and compatibility with global power infrastructure requirements, giving you confidence in its operational stability.
Designed to adapt to diverse scenarios, this solution is suitable for a wide range of applications, including:
- Urban public power distribution and street lighting systems
- Industrial and mining enterprises, urban buildings, and residential communities
- Oilfield terminals, hotels, parks, and temporary construction sites
It supports both ring network and terminal power supply modes, offering flexible deployment to meet the unique needs of different power distribution networks—whether for large-scale urban development or temporary project power demands.
Parameter of Distribution Substation Transformer
Technical Parameter:
Rated frequency: 50HZ
Rated voltage: HV side 12kV, LV side 400V
Rated capacity: up to 1600kVA
Protection class: IP33 or according to your requirements
Use Conditions of Packaged Substations:
Altitude: ≤1000m;
Ambient temperature: -15℃~+40℃;
Relative humidity: daily average ≤95%, monthly average ≤90%;
Anti-vibration level: horizontal acceleration 0.4m/s, vertical acceleration 0.15m/s;
The installation site has no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion hazards.
When the normal use conditions cannot be met, please consult with our company to solve the problem.
Feature of Distribution Substation Transformer
When it comes to building a reliable and efficient power distribution system, understanding the Feature of Distribution Substation Transformer and its supporting components is essential. A typical distribution substation integrates high-voltage switchgear, a core transformer, and low-voltage power distribution devices, all working in tandem to ensure safe and stable power transmission. Below is a detailed breakdown of each key element, with a focus on the transformer’s critical characteristics.
The high-voltage switchgear serves as the “gatekeeper” for power entering the substation, and its design complements the transformer’s operational safety.
- Insulation Options: It adopts diverse insulation technologies, including SF6 gas insulation, eco-friendly gas insulation, solid insulation ring network cabinets, and atmospheric sealed air insulation ring network cabinets. These options ensure compatibility with different transformer installation environments.
- Pressure Relief Design: The pressure relief channel of the high-voltage cabinet is directed toward the cable trench. This design prevents potential hazards from affecting the transformer and other core equipment during abnormal operations.
The transformer is the heart of the distribution substation, and its features directly determine the substation’s energy efficiency, environmental performance, and reliability.
- Type & Material: Energy-efficient and eco-friendly fully sealed oil-immersed transformers are recommended. They are available in two core materials: silicon steel sheets and amorphous alloys, balancing performance and sustainability.
- Compliance Standards: All transformers meet the strict requirements of national standards, including GB 1094, GB/T 6451, and GB 20052, ensuring consistent quality and safe operation.
- Rated Capacity: Common capacity options are 400kVA, 500kVA, and 630kVA. These capacities are optimized to match most urban and industrial low-voltage power distribution needs, ensuring the transformer operates at peak efficiency.
The low-voltage power distribution device acts as the “distributor” of power after transformation, with its specifications tailored to the transformer’s capacity.
- Automation Compatibility: If an automation terminal is configured, the box-type substation reserves sufficient internal space for installing an independent secondary cabinet for the DTU (Data Transfer Unit) public unit. This supports intelligent monitoring of the transformer’s output.
- Monitoring Instruments: A current and voltmeter are installed on the low-voltage incoming line side, enabling real-time monitoring of the power output from the transformer.
- Busbar Current Matching: The rated current of the low-voltage main busbar is precisely matched to the transformer’s capacity: 800A for 400kVA transformers, 1000A for 500kVA transformers, and 1250A for 630kVA transformers. This ensures efficient power transmission without overload risks.
By integrating these components—especially a transformer with the above-listed features—a distribution substation can achieve optimal performance, safety, and energy efficiency. Whether for urban infrastructure or industrial applications, focusing on the Feature of Distribution Substation Transformer is key to building a robust power distribution network.
