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 purpose is to “replace traditional building substations, achieving rapid deployment, efficient power distribution, safety and reliability, land and energy conservation, and unmanned operation.” It is widely used in various outdoor power distribution scenarios, such as urban and rural power grid upgrading and transformation, industrial manufacturing, commercial buildings, municipal facilities, renewable power generation, construction sites, etc. At present, it is the main equipment of choice due to “short construction period, small area footprint, strong adaptability, and low operating and maintenance costs” in power grid construction.

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

Furthermore, YB supports comprehensive customization. This allows for the optimization of the internal structure and key components based on the user's voltage level, transformer power, power supply circuit, protection requirements, and operating conditions. It adapts to various power distribution methods, such as terminal-based, ring-based, and dual-power, while maintaining a balance between practicality and cost-effectiveness.

II. Technical characteristics and parameters (customizable)

Standard switch type: load switch + fuse; optional: vacuum switch, distribution switchring network shieldLoad switch + fuse is suitable for terminal power supply; vacuum circuit breaker is suitable for high current and high reliability applications; ring network distribution board is suitable for ring network power supply.

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

Short-circuit breaking capacity: 20 kA/2 s, 25 kA/3 s (standard); 40 kA/3 s (optional). High short-circuit breaking capacity allows for quick disconnection of the faulty 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 interlock, real-time display. Comprehensive protection features effectively ensure equipment and network safety by preventing electric shock and short circuits.

Operating modes: Manual (standard); Electric, remote control (optional). Electric and remote control are suitable for unmanned scenarios and allow for increased operational and maintenance efficiency.

Insulating materials: epoxy resin, silicone rubber (fully insulated enclosure). Superior insulating properties prevent insulation breakdown and enhance equipment operational safety.

(IV) Low voltage compartment configuration parameters

Detailed characteristics of the parameter category Notes

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

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

Number of socket circuits: 4–24 (standard), with additional circuits available upon customer request. Flexible socket circuit configurations depending on the number of electrical equipment installed.

Standard features include: energy metering (active/reactive power meter), lightning protection; optional features include: reactive power compensation (0.4 kV shunt capacitor), smart meter, leakage protection, and remote monitoring. Reactive power compensation improves the power factor and reduces line losses; the smart meter can track energy consumption data in real time.

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

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

III. Main Features

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

2. Factory assembly: connection and use on site, which significantly reduces construction time.

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

4. Complete protection from external influences, adaptation to harsh environmental conditions, stable and reliable operation.

5. Safety and reliability, complete protection, elimination of risks of improper operation.

6. Excellent heat dissipation and noise reduction, environmental friendliness, adapt to sensitive operating conditions.

7. Beautiful appearance, possibility of individual customization, harmonious integration into the 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 transport

5. Support for new energy sources

6. Temporary and emergency power supply

7. Application in special scenarios