prefab substation

YB-12 Type Outdoor Prefabricated Substation Product Details 

(Suitable for product manuals, technical tenders, and corporate official website product pages, balancing professionalism, practicality, and readability. It comprehensively covers the core technologies, specifications, structural highlights, and application scenarios of the YB-12 series European-style box-type substations, supplemented by details such as component materials, test standards, intelligent upgrades, and customized solutions. It clearly presents product value to assist users in equipment selection, technical docking, and promotion, highlighting the core advantages of "three independent compartments, factory pre-assembly, safety and reliability, convenient maintenance, and environmental adaptability")

I. Product Introduction

The YB-12 series 10kV outdoor prefabricated substation (European-style box-type substation) is an integrated, compact, and complete outdoor power distribution equipment developed and designed in strict accordance with national and international standards such as GB/T 17467-2020 High-voltage/Low-voltage Prefabricated Substations, IEC 62271-200 High-voltage switchgear and control equipment – Part 200: High-voltage prefabricated substations, and GB 20052-2020 Minimum energy efficiency limits and energy efficiency grades for power transformers. Its core positioning is to "replace traditional civil substations, achieving rapid deployment, efficient power distribution, safety and reliability, land and energy saving, and unattended operation". It is widely used in various outdoor power distribution scenarios such as urban and rural distribution network upgrading, industrial production, commercial buildings, municipal facilities, new energy power generation, and construction sites. It is the core preferred equipment for "short construction period, small land occupation, high adaptability, and low operation and maintenance" in the current distribution network construction.

The YB-12 European-style box-type substation adopts the classic structure of three independent compartments (high-voltage compartment, transformer compartment, low-voltage compartment), which integrates high-voltage switchgear, distribution transformers, low-voltage power distribution systems, electric energy metering devices, reactive power compensation devices, intelligent monitoring systems, and auxiliary heat dissipation, lightning protection, moisture-proof, and fire protection systems. According to standardized wiring schemes and personalized needs, all assembly, wiring, commissioning, and testing are completed in the factory, ensuring that all performance indicators of the equipment are up to standard and operate stably when leaving the factory. Compared with traditional civil substations, the YB-12 completely abandons the cumbersome process of "civil construction + on-site assembly + commissioning". On-site, only simple foundation pouring, cable connection, and grounding treatment are required for rapid commissioning, which greatly shortens the construction period and reduces construction costs and labor input.

Different from the integrated oil-immersed design of American-style box-type substations, the three-compartment independent structure of the YB-12 European-style box-type substation not only realizes the physical isolation of high-voltage, transformer, and low-voltage systems, avoiding mutual interference between systems, but also facilitates separate maintenance, upkeep, and capacity expansion. Users can flexibly add circuits and upgrade functions according to later power distribution needs without replacing the entire equipment. The product adopts a fully sealed and anti-corrosion enclosure design as a whole, adapting to various harsh outdoor environments. It can operate stably for a long time under working conditions such as high temperature, severe cold, humidity, dust, coastal salt fog, and chemical corrosion without building additional protective workshops, further saving land occupation and investment costs.

In addition, the YB-12 supports full-dimensional customized design. It can optimize the internal structure and core components according to the user's voltage level, transformer capacity, power supply scheme, protection requirements, and on-site environment, adapting to various power distribution modes such as terminal power supply, ring network power supply, and dual power supply, balancing practicality and economy. At the same time, the product can be integrated with intelligent monitoring and remote operation and maintenance systems to monitor equipment operating status (voltage, current, temperature, load, faults, etc.) in real time, realizing fault early warning, automatic protection, and remote control, which greatly reduces operation and maintenance costs and improves the intelligence level of the power distribution system, helping users achieve efficient, safe, and convenient management of the power distribution system.

The product strictly implements national and industry standards and undergoes multiple tests such as voltage withstand test, insulation test, protection operation test, and temperature rise test before leaving the factory to ensure safe and reliable operation. The design service life is up to 25 years, and it can serve various power distribution scenarios stably for a long time, making it an ideal choice for urban and rural distribution network upgrading, industrial power distribution, and new energy supporting.

II. Specifications and Parameters（customizable）

(I) General Technical Parameters

Parameter Category Detailed Specifications Notes

Product Model YB-12/0.4-□ (□ = transformer capacity in kVA), e.g., YB-12/0.4-500kVA Customizable special models according to voltage level and transformer capacity

Rated Voltage High-voltage side: 12kV (adapted to 10kV distribution network system); Low-voltage side: 0.4kV (400V/230V) Optional 6kV/0.4kV model to adapt to regional distribution network needs

Rated Frequency 50Hz (power frequency) Customizable 60Hz model (for export)

Rated Capacity Conventional capacity: 50kVA, 80kVA, 100kVA, 125kVA, 160kVA, 200kVA, 250kVA, 315kVA, 400kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1250kVA, 1600kVA; Maximum capacity: 2500kVA; Dual-transformer configuration: Max 2×1250kVA Full series covers standard capacity, supporting non-standard capacity customization to meet different load requirements

System Wiring Mode Three-phase four-wire system (standard); Three-phase five-wire system (optional, including PE line) Adapts to different power consumption scenarios; three-phase five-wire system improves power supply safety

Transformer Connection Group D,yn11 (standard configuration) Suppresses third harmonic, improves power supply quality, adapts to various electrical equipment, and avoids neutral point drift

Voltage Regulation Mode No-load voltage regulation (standard); On-load voltage regulation (optional, ±2×2.5%) No-load voltage regulation is suitable for scenarios with small voltage fluctuations; on-load voltage regulation adapts to areas with large voltage fluctuations to ensure terminal voltage stability

Protection Grade Standard: IP44 (water splash-proof, solid foreign object-proof); Optional: IP33 (water shower-proof, solid foreign object-proof), IP54 (dust-proof, water splash-proof), IP65 (dust-proof, water jet-proof) IP54 and above are suitable for harsh environments such as coastal, dusty, and chemical areas; IP33 is suitable for general outdoor scenarios

Enclosure Material Standard: Cold-rolled steel plate (thickness 2.0-3.0mm) with anti-corrosion plastic spraying surface; Optional: Aluminum alloy, stainless steel 304/316, composite insulation board Stainless steel material is suitable for coastal and chemical high-corrosion scenarios; composite insulation board is suitable for severe cold areas

Cooling Mode Oil-immersed transformer: Natural air cooling (ONAN, standard), forced air cooling (ONAF, optional); Dry-type transformer: Natural air cooling (AN, standard), forced air cooling (AF, optional) Forced air cooling is suitable for high-load and high-temperature environments, improving heat dissipation efficiency and avoiding equipment overheating

Operating Ambient Temperature Standard type: -30℃～+45℃; Customized high and low temperature type: -40℃～+55℃ High and low temperature type adapts to severe cold in northern and hot in southern regions, ensuring stable operation of equipment through optimization of insulation and heating devices

Applicable Altitude Standard type: ≤2000m; High-altitude type: ≤4000m (insulation design needs optimization) High-altitude type improves insulation level to adapt to high-altitude low-pressure environments and avoid insulation breakdown

Relative Humidity Daily average ≤95%, monthly average ≤90% (no condensation) Equipped with anti-condensation device (optional) to avoid equipment failures caused by humidity

Design Service Life ≥25 years Core components (transformers, switchgear) have a service life of ≥30 years with a long maintenance-free cycle

Implementation Standards 1. GB/T 17467-2020 High-voltage/Low-voltage Prefabricated Substations; 2. IEC 62271-200 High-voltage switchgear and control equipment – Part 200: High-voltage prefabricated substations; 3. GB 20052-2020 Minimum energy efficiency limits and energy efficiency grades for power transformers; 4. GB/T 10228-2015 Technical parameters and requirements for dry-type power transformers; 5. GB 3836 (explosion-proof type optional) Explosion-proof type is suitable for flammable and explosive scenarios such as chemical and mining areas, complying with explosion-proof safety standards

Factory Tests Voltage withstand test, insulation test, protection operation test, temperature rise test, short-circuit withstand test, sealing test All equipment must pass various tests before leaving the factory to ensure performance compliance

Cabinet Size Varies with capacity; Example: 500kVA model (length×width×height): 3800mm×2200mm×2800mm; 1000kVA model: 4500mm×2500mm×3000mm Customizable cabinet size according to on-site space

(II) High-voltage Compartment Configuration Parameters

Parameter Category Detailed Specifications Notes

Switch Type Standard: Load switch + fuse; Optional: Vacuum circuit breaker (VS1 type), ring main unit (RM6/SF6 type) Load switch + fuse is suitable for terminal power supply; vacuum circuit breaker is suitable for high-current and high-reliability scenarios; ring main unit is suitable for ring network power supply

Rated Current 200A, 400A, 630A (optional) Flexible selection according to distribution load size

Short-circuit Breaking Capacity 20kA/2s, 25kA/3s (standard); 40kA/3s (optional) Strong short-circuit breaking capacity, which can quickly cut off faulty circuits and avoid fault expansion

Incoming Mode Cable incoming (standard); Overhead incoming (optional, equipped with arrester and disconnector) Cable incoming is suitable for urban, residential and other scenarios; overhead incoming is suitable for rural and remote areas

Protection Functions Overcurrent protection, short-circuit protection, zero-sequence protection, lightning protection, grounding interlock protection, live display Comprehensive protection functions can effectively protect equipment and grid safety and avoid electric shock and short-circuit faults

Operation Mode Manual operation (standard); Electric operation, remote control (optional) Electric operation and remote control are suitable for unattended scenarios and improve operation and maintenance efficiency

Insulation Material Epoxy resin, silicone rubber (fully insulated packaging) Excellent insulation performance, avoiding insulation breakdown and improving equipment operation safety

(III) Transformer Configuration Parameters

Parameter Category Detailed Specifications Notes

Transformer Type Oil-immersed: S13, S20, S22 series (energy-saving type); Dry-type: SCB13, SCB14 series (epoxy casting, fire-proof type) Oil-immersed type is suitable for conventional outdoor scenarios with high cost performance; dry-type is suitable for scenarios with high fire protection requirements (residential areas, commercial areas, hospitals)

Energy Efficiency Grade Grade 1, Grade 2 (optional) Grade 1 energy efficiency has better energy-saving effect, saves a lot of electric energy during long-term operation, and complies with national energy-saving policies

Short-circuit Impedance 6% (50kVA～1600kVA); 8% (2000kVA～2500kVA) Strong short-circuit resistance, ensuring that the transformer is not damaged in the event of sudden short circuit

Insulating Oil for Oil-immersed Transformers 25# transformer oil (standard); High-flashpoint insulating oil (optional) High-flashpoint insulating oil can reduce fire risk and is suitable for scenarios with high fire protection requirements

Protection Grade of Dry-type Transformers IP20 (standard); IP30 (optional) High protection grade, which can effectively prevent dust and foreign object intrusion

Temperature Control Device Oil-immersed: Oil temperature sensor + temperature controller; Dry-type: Winding temperature sensor + temperature controller, supporting over-temperature alarm and automatic start/stop of cooling fans Real-time temperature monitoring avoids equipment overheating and prolongs service life

(IV) Low-voltage Compartment Configuration Parameters

Parameter Category Detailed Specifications Notes

Main Circuit Switch Molded case circuit breaker (MCCB, standard); Air circuit breaker (ACB, optional) MCCB is suitable for medium and small capacity; ACB is suitable for large capacity and high-reliability scenarios

Rated Current Up to 3200A, matching transformer capacity Example: 500kVA transformer, low-voltage rated current is about 900A; 1000kVA transformer, low-voltage rated current is about 1800A

Outlet Circuits 4～24 circuits (standard), customizable more circuits Flexible configuration of outlet circuits according to the number of electrical equipment

Function Configuration Standard: Electric energy metering (active/reactive power meter), lightning protection; Optional: Reactive power compensation (0.4kV shunt capacitor), intelligent meter, leakage protection, remote monitoring Reactive power compensation can improve power factor and reduce line loss; intelligent meter can monitor power consumption data in real time

Protection Functions Overload protection, short-circuit protection, leakage protection (optional), undervoltage protection, overvoltage protection Protect electrical equipment safety and avoid equipment damage and safety accidents caused by abnormal voltage and leakage

Wiring Mode Copper bar wiring (standard); Cable wiring (optional) Copper bar wiring has strong current-carrying 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

The YB-12 European-style box-type substation adopts the classic three-compartment independent design (high-voltage compartment, transformer compartment, low-voltage compartment), which is the core advantage of European-style box-type substations compared with American-style ones, completely solving the pain points of inconvenient maintenance and mutual interference in integrated design:

Physical Isolation, Safe and Reliable: Fireproof partitions and sealing baffles are used to separate the three compartments, realizing complete physical isolation of high-voltage, transformer, and low-voltage systems, avoiding the impact of high-voltage arcs and transformer heat on the low-voltage system, and preventing fault diffusion to improve equipment operation safety.

Separate Maintenance, Non-stop Power Operation and Maintenance: During maintenance, any compartment can be opened separately for operation without interrupting the power supply of the entire power distribution system, only affecting the load corresponding to a single compartment, which greatly reduces power outage losses, especially for scenarios with high requirements for power supply continuity (such as hospitals, data centers, and industrial production).

Reasonable Layout, Easy Operation: Each compartment has a standardized layout, with independent operation doors and observation windows in the high-voltage and low-voltage compartments, regular internal wiring, and sufficient maintenance space. Operators can quickly troubleshoot and replace components, improving maintenance efficiency.

2. Factory Integrated Pre-assembly: Plug-and-play on Site, Greatly Shortening Construction Period

The YB-12 box-type substation takes "factory prefabrication, on-site rapid deployment" as its core highlight, completely solving the pain points of long construction period, cumbersome construction, and high cost of traditional civil substations:

Full-process Factory Prefabrication: All components (high-voltage switches, transformers, low-voltage distribution, metering, compensation, etc.) are selected, assembled, wired, commissioned, and tested in the factory in strict accordance with national and industry standards, ensuring that all performance indicators of the equipment are up to standard and operate stably when leaving the factory. No on-site secondary commissioning is required, realizing true "factory prefabrication, on-site plug-and-play".

Simplified On-site Installation: On-site only requires simple concrete foundation pouring (3-5 days), overall equipment hoisting (1-2 days), cable connection and grounding treatment (1-2 days). Power transmission and commissioning can be completed in 1-3 days at the fastest, with a construction period shortened by more than 80% compared with traditional civil substations (3-6 months), greatly reducing on-site construction costs, labor costs, and management costs.

Combination of Standardization and Personalization: The factory prefabricates according to standardized schemes, and can flexibly adjust internal configuration and cabinet size according to user needs, balancing the efficiency of standardized production and the adaptability of personalized needs.

3. Compact Structure, Minimal Land Occupation, Flexible Layout, Saving Investment

The product adopts a modular and compact design, minimizing the volume on the premise of ensuring performance, adapting to different site requirements, and greatly saving land acquisition and infrastructure costs:

Extreme Land Saving: For the same capacity, the floor area of the YB-12 box-type substation is only 1/5 to 1/10 of that of traditional civil substations. Taking a 500kVA model as an example, the floor area is only 8-10㎡. It can be directly installed in narrow sites such as roadside, residential corners, and industrial park edges, especially suitable for scenarios with scarce urban land resources.

Close to Load Center: It can be flexibly arranged near the load center, shortening the low-voltage power supply distance, reducing line loss, improving power supply quality, and reducing the consumption of low-voltage cables to further save investment costs.

Flexible Installation: Supports outdoor floor installation (fixed on concrete foundation), single or multiple parallel installation, adapting to different terrain and space requirements; the foundation is simple without complex civil construction, enabling rapid installation and deployment.

Movable and Reusable: The cabinet adopts an integrated design. If capacity expansion, relocation, or project completion is needed, it can be moved as a whole through hoisting for reuse, greatly reducing repeated investment costs, especially suitable for temporary power, construction sites, power grid transformation, and other scenarios.

4. Full Outdoor Protection, Adapting to Harsh Environments, Stable and Reliable Operation

Aiming at complex outdoor environments, the YB-12 box-type substation realizes full-scenario adaptability through structural optimization and material upgrading, with full operation stability without additional protective facilities:

Comprehensive Protection: The enclosure is made of cold-rolled steel plate with plastic spraying, stainless steel, or composite insulation board, with excellent sealing performance and a protection grade of IP44 and above. It can effectively prevent rain, dust, solid foreign objects, water shower, water splash, and even resist coastal salt fog, industrial dust, acid and alkali corrosion, adapting to harsh environments such as outdoor, humid, dusty, coastal, mining, and chemical areas.

Wide Temperature Range Adaptation: The standard type can tolerate -30℃～+45℃, and the customized high and low temperature type can adapt to -40℃～+55℃. Through box insulation and heating devices (optional), the impact of low-temperature icing and high-temperature overheating on equipment operation is avoided, meeting the use needs of severe cold in northern and hot in southern regions.

Optimized Heat Dissipation: According to the transformer type, heat dissipation systems such as natural heat dissipation, forced air exhaust, and radiators are configured. The transformer compartment is equipped with ventilation louvers and temperature-controlled fans, which can start and stop automatically according to temperature, ensuring that the equipment temperature is controlled within a reasonable range during operation, avoiding failures caused by overheating and ensuring long-term stable operation.

Improved Lightning Protection and Grounding: Built-in lightning protection devices (zinc oxide arresters) and reliable connection with the grounding system are adopted, with a grounding resistance of ≤4Ω, which can effectively resist lightning impact, avoid equipment damage caused by lightning, and ensure operator safety; an anti-condensation device (optional) is equipped to avoid insulation degradation and equipment failures caused by humid environments.

Corrosion Resistance and Durability: The enclosure is treated with anti-corrosion plastic spraying with a coating thickness of ≥80μm and strong adhesion, which can effectively prevent rust and corrosion and prolong the service life of the equipment; stainless steel material can resist coastal salt fog and chemical corrosion, suitable for high-corrosion scenarios.

5. Safe and Reliable, Complete Protection, Eliminating Misoperation Risks

The product ensures the safety of equipment and power grid in all aspects from hardware configuration to structural design, and eliminates misoperation risks, adapting to unattended scenarios:

Multiple Safety Protections: The high-voltage side is equipped with overcurrent, short-circuit, zero-sequence, lightning protection, and grounding interlock protection; the low-voltage side is equipped with overload, short-circuit, leakage (optional), undervoltage, and overvoltage protection; the transformer is equipped with temperature protection, covering all fault scenarios, which can quickly cut off faulty circuits and avoid equipment damage and grid fault expansion.

Perfect Misoperation Prevention Interlocks: Independent door locks and warning signs are set in the high-voltage and low-voltage compartments, equipped with mechanical and electrical interlock devices, eliminating risks such as wrong closing, wrong opening, misoperation, and load-bearing operation, ensuring operator safety; the live display device can display the high-voltage live status in real time to remind operators of safety.

High-quality Component Configuration: Core components (transformers, circuit breakers, load switches, fuses, etc.) are selected from well-known brands with stable performance, long service life, and excellent insulation performance, which can effectively avoid equipment shutdown caused by component failures and improve equipment operation reliability.

Fire Protection Design: Fireproof partitions are used to separate the three compartments, equipped with fireproof sealing materials; oil-immersed transformers can be equipped with fireproof oil tanks, and dry-type transformers adopt fireproof and flame-retardant epoxy casting materials, which can effectively contain fire spread and improve fire safety.

6. Excellent Heat Dissipation and Noise Reduction, Environmentally Friendly, Adapting to Sensitive Scenarios

The product optimizes heat dissipation and noise reduction design, balancing operation efficiency and environmental friendliness, and can adapt to scenarios with high noise and environmental requirements such as residential areas, schools, and hospitals:

Efficient Heat Dissipation: The transformer compartment adopts an independent ventilation design, equipped with ventilation louvers and radiators. Oil-immersed transformers adopt natural air cooling + forced air cooling (optional), and dry-type transformers adopt natural air cooling + forced air cooling (optional), with high heat dissipation efficiency, ensuring stable operation of the equipment in high-load and high-temperature environments and avoiding performance degradation caused by overheating.

Low Noise Operation: The iron core is made of high-permeability grain-oriented silicon steel sheets, and the winding structure is optimized to reduce excitation noise and load noise. The operation noise is ≤50dB, which can be directly installed in sensitive areas such as residential areas, schools, hospitals, and parks without disturbing residents or damaging the environment.

Environmentally Friendly and Pollution-free: Oil-immersed transformers adopt 25# transformer oil or high-flashpoint environmentally friendly insulating oil, which is leakage-free and pollution-free, complying with environmental protection standards; dry-type transformers are oil-free, fireproof and flame-retardant, with no environmental hidden dangers, and can be used in crowded and high environmental protection requirements scenarios; the overall energy consumption is low, and Grade 1 energy efficiency transformers can greatly save electric energy, practicing the concept of green and low-carbon development.

7. Beautiful Appearance, Customizable, Integrating into the Surrounding Environment

The YB-12 box-type substation pays attention to appearance design, which can be perfectly integrated with surrounding buildings and environments without destroying urban landscapes and residential environments:

Simple and Generous Appearance: The cabinet has regular lines, a smooth surface, no obvious protrusions, and a simple and beautiful overall shape conforming to modern architectural aesthetics.

Customizable Color and Appearance: According to the surrounding architectural style and environmental needs, the enclosure color (such as light gray, off-white, dark gray, blue, etc.) can be customized, and decorative panels and greening barriers can be added to integrate the box-type substation into the landscape of residential areas, parks, and commercial areas without damaging the overall environmental coordination.

Hidden Design: Customizable landscape-type cabinets can be matched with greening and decoration to hide the box-type substation in the landscape, meeting power distribution needs without affecting environmental aesthetics.

8. Flexible Customization, Wide Adaptability, Balancing Practicality and Economy

The product supports full-dimensional customized design, which can accurately match the personalized needs of different users and scenarios, balancing practicality and economy, and adapting to various power distribution scenarios:

Core Component Customization: Oil-immersed/dry-type transformers (S13/S20/S22/SCB13/SCB14) can be selected according to needs, and transformer capacity and voltage level can be customized; the high-voltage side can choose load switches, ring main units, and vacuum circuit breakers, and the low-voltage side can customize outlet circuits, reactive power compensation capacity, metering methods, and protection functions.

Protection and Material Customization: According to the on-site environment, protection grade (IP33-IP65) and enclosure material (cold-rolled steel plate/aluminum alloy/stainless steel/composite insulation board) can be customized; corrosion-resistant enclosures can be customized for coastal areas, and thermal insulation cabinets for northern areas, and high and low temperature type equipment for severe cold areas.

Power Supply Scheme Customization: Supports various schemes such as terminal power supply, ring network power supply, and dual power supply, adapting to different power distribution topology needs such as urban and rural distribution networks, industrial parks, and new energy grid connection; explosion-proof, high-altitude, and cold-resistant equipment can be customized for special scenarios.

Size and Layout Customization: Cabinet size and internal layout can be customized according to on-site space to adapt to installation requirements in narrow sites and special terrains.

9. High Intelligence, Convenient Operation and Maintenance, Reducing Maintenance Costs

The product supports intelligent upgrading, realizing refined and unmanned management of the power distribution system, greatly improving operation and maintenance efficiency and reducing costs:

Optional Intelligent Monitoring: Equipped with an intelligent monitoring terminal, it can monitor equipment operating parameters (voltage, current, power, temperature, load, faults, etc.) in real time, realize real-time data upload and remote alarm. Operation and maintenance personnel can grasp the equipment operating status in real time through mobile apps and computer terminals, discover and handle faults in a timely manner, and do not require on-site duty.

Remote Control Function: Optional electric operation and remote control modules can realize remote switching of circuit breakers, remote control of cooling fans, and remote fault reset, improving operation and maintenance efficiency and reducing operation and maintenance personnel input.

Fault Recording and Analysis: The intelligent monitoring system can record fault data and operation logs, which is convenient for operation and maintenance personnel to analyze fault causes, quickly troubleshoot, shorten maintenance time, and improve operation and maintenance efficiency.

Maintenance-free Design: Factory pre-assembled and debugged, with standardized internal wiring and high-quality components and few fault points. Daily operation and maintenance only require regular inspections (cleaning the enclosure, checking wiring, viewing meter data), without frequent maintenance and component replacement, with a long maintenance-free cycle. The operation and maintenance workload is only 1/10 of that of traditional substations, greatly reducing personnel and cost investment.

10. Long Service Life, High Cost Performance, Complying with Policy Orientation

The product adopts high-quality materials and components, with stable structure, long service life, and high comprehensive cost performance, complying with national policies on energy conservation and distribution network upgrading:

Long Service Life: The design life is up to 25 years, and core components (transformers, switchgear) have a service life of ≥30 years with a long maintenance-free cycle, ensuring long-term stable operation and reducing equipment replacement costs.

High Cost Performance: Saving civil engineering, land, cables, labor, and maintenance, the overall investment is more than 40% lower than that of traditional civil substations, and it has more advantages in maintenance and capacity expansion than American-style box-type substations, balancing economy and practicality, and being the optimal choice for projects pursuing "low cost, quick landing, and high reliability".

Policy Adaptation: Complying with national policies on distribution network upgrading, energy-saving transformation, and green and low-carbon development, equipped with Grade 1/2 energy efficiency transformers as standard, it can apply for local energy-saving subsidies and green building supporting subsidies, helping users reduce project costs and practice the concept of green and low-carbon development.

IV. Application Scenarios

The YB-12 type outdoor prefabricated substation (European-style box-type substation), with the core advantages of "three independent compartments, factory pre-assembly, safety and reliability, convenient maintenance, environmental adaptability, and flexible customization", is widely used in various 10kV outdoor power distribution scenarios, covering six fields: urban and rural distribution network, industrial production, commercial buildings, public facilities, new energy supporting, and temporary power. It adapts to different load requirements and environmental conditions and is an ideal equipment for distribution network construction and transformation:

1. Urban and Rural Distribution Network (Core Application Scenario)

Suitable for urban and rural distribution network upgrading, old residential area transformation, and rural power network improvement, solving the pain points of traditional substations such as large land occupation, long construction period, and inconvenient maintenance:

Urban Distribution Network: For the transformation of old urban residential areas, urban villages, and new urban areas, it can be installed in residential corners, roadside, and green belts, close to the load center to improve power supply quality, avoiding large-scale civil construction and reducing the impact on residents' lives; for municipal power distribution such as urban road lighting, municipal pipe network monitoring, and urban squares, it adapts to outdoor scenarios and reduces municipal operation and maintenance costs due to its maintenance-free feature; for power distribution in urban commercial blocks and pedestrian streets, the appearance can be customized to integrate into the block landscape without damaging the commercial atmosphere.

Rural Distribution Network: For decentralized load power supply in rural towns, mountainous areas, breeding areas, and irrigation areas, the YB-12 box-type substation has small land occupation and flexible installation, adapting to rural narrow sites and harsh environments, solving the problems of "low voltage and unstable power supply" in rural areas; in rural power network upgrading projects, it can quickly replace old transformers to improve power supply reliability and energy-saving effect; for unattended power distribution in remote mountainous areas, the intelligent monitoring function can realize remote operation and maintenance, reducing operation and maintenance personnel input.

Urban-rural Fringe: For power distribution of new houses, shops, and small enterprises in the urban-rural fringe with tight construction periods and limited sites, the YB-12 box-type substation can quickly meet power supply needs, save land acquisition and infrastructure investment, and flexibly expand capacity in the later stage to adapt to regional development needs.

2. Industrial Production

Suitable for outdoor power distribution needs of various industrial enterprises and industrial parks, especially for scenarios with high loads, harsh environments, tight construction periods, and frequent maintenance:

Industrial Parks: For the new construction and expansion of industrial parks, providing centralized power distribution for park enterprises, multiple box-type substations can be flexibly arranged according to the load distribution of the park to realize zonal power supply and improve power supply reliability; it adapts to the dusty and equipment-intensive working conditions in industrial parks, with high protection grade and stable operation. The three-compartment independent structure is convenient for maintenance without affecting normal enterprise production; dual-power supply schemes can be customized to ensure production continuity.

Heavy Industry Scenarios: For mines, cement plants, chemical enterprises, smelters, etc., with harsh outdoor environments (dusty, humid, corrosive), the anti-corrosion, dust-proof, and moisture-proof design of the YB-12 box-type substation can ensure long-term stable operation of the equipment, providing stable power supply for production equipment and avoiding production interruptions caused by voltage fluctuations; explosion-proof equipment can be customized to adapt to flammable and explosive scenarios such as chemical and mining areas.

Light Industry Scenarios: For outdoor power distribution of mechanical manufacturing, electronic processing, food processing, textile printing and dyeing and other enterprises, the YB-12 box-type substation is compact and land-saving, which can be installed outside the workshop without occupying production space, adapting to the high-load power demand of enterprises, with convenient maintenance and reduced production interruption time.

Data Center Supporting: For power distribution equipment of outdoor data centers, which requires stable operation, energy efficiency, and convenient maintenance, the YB-12 box-type substation can provide reliable power distribution guarantee, and can be equipped with an intelligent monitoring system to realize remote operation and maintenance, meeting the needs of intelligent management of data centers; dry-type transformer models can adapt to the fire protection requirements of data centers.

3. Commercial and Civil Buildings

Suitable for outdoor power distribution needs of commercial complexes, residential quarters, office buildings, hotels, hospitals, etc., balancing safety, convenience, aesthetics, and environmental protection:

Residential Quarters: For low-voltage power distribution of high-rise residential buildings, resettlement houses, and villas, the YB-12 box-type substation has a compact structure and small land occupation, which can be installed in residential power distribution rooms or green belts. The draw-out structure facilitates later maintenance and upkeep without affecting residents' normal power consumption; it has low noise, safety and reliability, adapting to residential life scenarios; the appearance can be customized to integrate into the residential landscape without damaging the environment.

Commercial Complexes: For shopping malls, supermarkets, hotels, office buildings, etc., with large power loads and diverse formats (lighting, air conditioning, elevators, cash register equipment, etc.), the YB-12 box-type substation can flexibly configure circuits to realize reasonable power distribution. The intelligent monitoring function is convenient for operation and maintenance personnel to grasp the power distribution status in real time, ensuring normal commercial operation; dual-power supply schemes can be customized to avoid commercial losses caused by power outages.

Public Buildings: For hospitals, schools, libraries, museums, stadiums, etc., with stable power loads and high requirements for power supply reliability and safety, the YB-12 box-type substation is safe, reliable, and convenient for maintenance, ensuring the normal operation of lighting, air conditioning, medical equipment, sports facilities, etc., and avoiding the impact of power outages on public services; it has low noise and no environmental pollution, adapting to crowded scenarios.

4. Public Facilities and Transportation

Meet the outdoor power distribution needs of public facilities and transportation hubs to ensure the normal operation of public services and transportation:

Transportation Hubs: For outdoor power distribution of subways, high-speed railway stations, airports, long-distance bus stations, ports, etc., with large outdoor power demand, the YB-12 box-type substation can be used for power distribution of lighting, air conditioning, dispatching systems and other equipment, with high protection grade and reliable operation, avoiding operation interruptions caused by voltage fluctuations; it can be installed in narrow sites around transportation hubs without affecting traffic operation; the intelligent monitoring function can realize remote operation and maintenance, improving operation and maintenance efficiency.

Municipal Facilities: For outdoor power distribution of sewage treatment plants, garbage treatment plants, parks, scenic spots, municipal road lighting, urban pipe network monitoring, etc., the YB-12 box-type substation adapts to humid and dusty environments, and its maintenance-free feature reduces municipal operation and maintenance costs, and can be used for power distribution of lighting, water pumps, monitoring and other equipment; the appearance can be customized to integrate into the landscapes of parks and scenic spots without damaging the environment.

Stadiums and Convention Centers: For outdoor power distribution of large stadiums and convention centers with large power loads and high requirements for power supply continuity, the YB-12 box-type substation can realize power distribution and control of power and power, flexibly configure circuits, adapt to load fluctuations during events and exhibitions, and facilitate maintenance to ensure the smooth holding of activities.

5. New Energy Supporting

Suitable for grid-connected scenarios of new energy such as photovoltaic, wind power, and energy storage, solving the pain points of decentralized new energy power generation and outdoor deployment:

Distributed Photovoltaic Stations: For supporting power distribution of roof and ground distributed photovoltaic power stations, the YB-12 box-type substation can be directly installed on-site of photovoltaic power stations to realize boosting, power distribution, and grid connection of photovoltaic power, adapting to outdoor open-air environments with stable operation. The capacity and configuration can be customized according to the photovoltaic installed capacity; the three-compartment independent structure facilitates maintenance and reduces the downtime of power stations.

Wind Power Stations: For supporting power distribution of wind farms, especially small wind farms and distributed wind power, the YB-12 box-type substation can be used for power distribution at the outlet of wind turbines and collection line power distribution, adapting to outdoor harsh environments such as mountainous areas and grasslands, with wind resistance, dust resistance, and moisture resistance to ensure smooth grid connection of wind power; high-altitude equipment can be customized to adapt to high-altitude wind farms.

Energy Storage Stations Supporting: For boosting and buck power distribution of energy storage systems, the YB-12 box-type substation can adapt to the load fluctuation needs of energy storage systems, support dual power supply, ensure the coordinated operation of energy storage systems and distribution networks, and improve energy storage utilization efficiency; the intelligent monitoring function can monitor the operating status of energy storage systems in real time and realize remote operation and maintenance.

6. Temporary and Emergency Power

Suitable for temporary construction, emergency power supply, and other scenarios to meet short-term and rapid power demand, with reusability and reduced investment costs:

Construction Sites: For temporary power in building construction with short construction periods and unfixed sites, the YB-12 box-type substation can be quickly deployed and flexibly relocated to provide stable power for construction machinery, temporary lighting, and office power consumption. It can be moved and reused after the project is completed, reducing investment costs; mobile design can be customized to facilitate transportation and hoisting.

Emergency Power Supply: For temporary power supply after natural disasters (floods, typhoons, earthquakes) and large-scale activities (exhibitions, events), the rapid deployment feature of the YB-12 box-type substation can quickly restore power supply to meet emergency needs; emergency-type equipment can be customized to adapt to power demand in extreme environments.

Temporary Commercial Scenarios: For short-term power demand such as temporary fairs, outdoor exhibitions, and temporary shops, the YB-12 box-type substation has a small size and fast installation, which can quickly meet power supply needs without complex construction; the appearance can be customized to adapt to the environmental needs of temporary commercial scenarios.

7. Special Scenario Applications

Through customized design, expand the application boundary of the product, adapt to various special working conditions, and meet the personalized needs of different scenarios:

Coastal Areas: Customized stainless steel enclosure and anti-corrosion YB-12 box-type substation, with salt fog and corrosion resistance, adapting to coastal distribution network scenarios and prolonging equipment service life; the protection grade is upgraded to IP54 and above to resist the impact of sea breeze and humidity.

Northern Severe Cold Areas: Customized thermal insulation and low-temperature YB-12 box-type substation, equipped with heating devices and insulation layers, tolerating extreme low temperature of -40℃ to ensure stable operation in winter and avoiding equipment failures caused by low-temperature icing; optimized insulation design prevents insulation degradation caused by low temperature.

High-altitude Areas: Customized high-altitude YB-12 box-type substation, with optimized insulation design, adapting to high-altitude low-pressure environments of ≤4000m, ensuring stable power supply of distribution networks in high-altitude areas; improving heat dissipation efficiency to adapt to the large temperature difference between day and night in high-altitude areas.

Scenarios with High Fire Protection Requirements: Select dry-type transformers (SCB13/SCB14), customize fire-proof YB-12 box-type substation, which is oil-free, fireproof and flame-retardant, adapting to crowded places such as residential areas, commercial areas, hospitals, and data centers; equipped with fireproof sealing and fireproof partitions to improve fire safety.

Flammable and Explosive Scenarios: Customized explosion-proof YB-12 box-type substation, complying with GB 3836 standards, adapting to flammable and explosive scenarios such as chemical plants, mines, and gas stations, eliminating safety accidents caused by electrical sparks.