Prefabricated substation

I. Introduction to the Product

Outdoor prefabricated substationYB Series 10 kV(European-style box-type substation) is an integrated, compact, and comprehensive outdoor power distribution equipment. Its main function is to 'replace traditional building substations, enabling rapid deployment, efficient power distribution, safety and reliability, land and energy savings, and unmanned operation.' It is widely used in various outdoor power distribution scenarios, such as urban and rural power grid upgrades and renovations, industrial production, commercial buildings, municipal facilities, renewable energy power generation, construction sites, etc. Currently, it is the primary preferred equipment for power grid construction due to its 'short construction period, small footprint, high adaptability, and low operation and maintenance costs.'

Unlike the integrated design of American oil-immersed box-type substations, the European YB box-type substation features a three-compartment independent structure. This not only ensures physical isolation of the high-voltage, transformer, and low-voltage systems, avoiding mutual interference between them, but also facilitates separate maintenance, repair, and expansion.

In addition, the YB supports comprehensive customization. It allows optimization of the internal structure and key components based on the user's voltage level, transformer capacity, power supply scheme, protection requirements, and operating conditions, adapting to various power distribution methods such as terminal power supply, ring network power supply, and dual power supply, while ensuring a balance between practicality and cost-effectiveness.

II. Technical Specifications and Parameters (Customizable)

Standard switch type: load switch + fuse; optional: vacuum circuit breaker, distribution ring network shield . Load switch + fuse is suitable for powering the terminals; Vacuum circuit breaker is suitable for high current and high reliability applications; The ring network distribution board is suitable for powering the ring network.

Rated current: 200A, 400A, 630A (optional), can be selected flexibly according to the power distribution load size.

Short circuit breaking capacity: 20 kA/2 s, 25 kA/3 s (standard); 40 kA/3 s (optional). High short-circuit breaking capacity allows you to quickly disconnect a damaged circuit, preventing damage from spreading.

Input method: cable entry (standard); overhead entry (optional, equipped with lightning arresters and disconnectors). Cable entry is suitable for urban and residential areas and other conditions; overhead entry is suitable for rural and remote areas.

Protection functions: overcurrent protection, short-circuit protection, zero-sequence protection, lightning protection, grounding lockout, real-time display. Comprehensive protection functions effectively ensure the safety of equipment and the network, preventing electric shock and short circuits.

Operating modes: Manual (standard); Electric, remote control (optional). Electric and remote control are suitable for unmanned scenarios and can improve operation and maintenance efficiency.

Insulation materials: epoxy resin, silicone rubber (fully insulated packaging). Excellent insulation performance, preventing insulation breakdown and enhancing equipment operation safety.

(IV) Low-voltage compartment configuration parameters

Detailed parameter category specifications Notes

Main circuit breaker: molded case circuit breaker (MCCB, standard); air circuit breaker (ACB, optional). MCCB is suitable for medium and small power capacities; ACB is suitable for large power capacities and high-reliability scenarios.

Rated current up to 3200 A, depending on transformer capacity. Example: 500 kVA transformer, low-voltage rated current approximately 900 A; 1000 kVA transformer, low-voltage rated current approximately 1800 A.

Number of socket circuits: 4–24 (standard quantity), with the possibility of increasing the number of circuits as per customer request. Flexible configuration of socket circuits based on the amount of electrical equipment.

Standard function configuration: energy metering (active/reactive power meter), lightning protection; Optional: reactive power compensation (0.4 kV shunt capacitor), smart meter, leakage protection, remote monitoring. Reactive power compensation helps improve the power factor and reduce line losses; the smart meter can monitor electricity consumption data in real time.

Protection functions: overload protection, short-circuit protection, leakage protection (optional), undervoltage protection, overvoltage protection. Protects electrical equipment and prevents equipment damage and accidents caused by abnormal voltage and leakage.

Wiring type: copper bar wiring (standard); cable wiring (optional). Copper bar wiring has high current capacity and good heat dissipation; cable wiring is flexible and suitable for narrow spaces.

III. Main Features

1. Three independent compartments: safe and convenient maintenance, no mutual interference.

2. Factory assembled: plug-and-play on site, significantly reducing construction time.

3. Compact design, minimal footprint, flexible layout, saving investment.

4. Full protection against external influences, adaptation to harsh environmental conditions, stable and reliable operation.

5. Safe and reliable, comprehensive protection, eliminating risks of misoperation.

6. Excellent heat dissipation and noise reduction, environmentally friendly, suitable for sensitive operating conditions.

7. Beautiful appearance, customizable, harmoniously blending into the surrounding environment.

IV. Application Scenarios

1. Urban and rural distribution network (main application scenario)

2. Industrial production

3. Commercial and civil buildings

4. Public facilities and transportation

5. Support for new energy sources

6. Temporary and emergency power supply

7. Application in special scenarios