1.华泉箱式变电站额定容量覆盖范围是多少?
The transformer rated capacity of Huaquan power 箱式变电站 (称为 “华泉箱变”) covers a range from 50kVA to 2500kVA, 满足从小区配电到工业园区主变电站的各种场景.
The Huaquan box-type substation adopts a modular design and a fully enclosed structure, with a protection level of IP54. It features dustproof, moisture-proof, and corrosion-resistant properties, and is widely used in industrial parks, 住宅区, commercial centers, new energy power generation, 及其他领域.
2.Detailed Capacity Specification Table of Huaquan Box-type Substation
Based on different transformer capacities, Huaquan power box-type substations can be divided into three main specification ranges: 小的, medium, and large
| Capacity range | Typical capacity (千伏安) | Applicable scenarios | structural form |
| Small box-type substation | 50, 80, 100, 125, 160, 200, 250, 315 | Small residential areas, charging stations, road lighting, small factories | European/YB series |
| Medium-sized box transformer | 400, 500, 630, 800, 1000, 1250 | Residential areas, commercial centers, small and medium-sized factories, 学校, 医院 | European/American style optional |
| Large box-type substation | 1600, 2000, 2500 | Industrial parks, large commercial complexes, 数据中心, and new energy boosting | Huashi/customized type |
The commonly used capacities of Huaquan Power’s box-type substations include 315千伏安, 400千伏安, 500千伏安, 630千伏安, 800千伏安, 1000千伏安, 1250千伏安, 1600千伏安, ETC. 他们之中, the specifications ranging from 630kVA to 1000kVA are the mainstream choice for power distribution in residential areas.
3. Capacity specifications classified by structural types
Huaquan Power mainly produces European-style box transformers (YB series), and can also customize American-style 和 Hua-style box transformers according to customer needs.
- European-style box-type substation (YB series) – Huaquan’s flagship product
The European-style box transformer is a compact, complete set of power distribution equipment that integrates high-voltage switchgear, 变形金刚, and low-voltage power distribution devices according to a specific wiring scheme. It is a flagship product of Huaquan Power.
| Specification Model | Rated capacity (千伏安) | high-voltage side voltage | Low-voltage side voltage | Protection level | Applicable scenarios |
| YB-50kVA | 50 | 10电压 | 0.4电压 | IP54 | Small street lamps, charging piles |
| YB-100kVA | 100 | 10电压 | 0.4电压 | IP54 | Small shops, agritourism |
| YB-200kVA | 200 | 10电压 | 0.4电压 | IP54 | Small factories, 农场 |
| YB-315kVA | 315 | 10电压 | 0.4电压 | IP54 | Small residential area, office building |
| YB-400kVA | 400 | 10电压 | 0.4电压 | IP54 | Medium-sized residential area, shopping mall |
| YB-500kVA | 500 | 10电压 | 0.4电压 | IP54 | Medium-sized residential area, 医院 |
| YB-630kVA | 630 | 10电压 | 0.4电压 | IP54 | Large residential community |
| YB-800kVA | 800 | 10电压 | 0.4电压 | IP54 | Large residential areas, 工厂 |
| YB-1000kVA | 1000 | 10电压 | 0.4电压 | IP54 | Industrial park, commercial complex |
| YB-1250kVA | 1250 | 10电压 | 0.4电压 | IP54 | Large factories, 数据中心 |
| YB-1600kVA | 1600 | 10电压 | 0.4电压 | IP54 | Large industrial park |
| YB-2000kVA | 2000 | 10电压 | 0.4电压 | IP54 | Large industrial and mining enterprises |
| YB-2500kVA | 2500 | 10电压 | 0.4电压 | IP54 | Heavy industry and new energy are on the rise |
- American-style box transformer – compact option
The American-style box transformer integrates the transformer and high and low voltage equipment into a single box design, 从而实现更小的尺寸和更低的成本. It is suitable for industrial parks, temporary power supply, 以及其他场景.
| Specification Model | Rated capacity (千伏安) | structural characteristics | Applicable scenarios |
| American-style – 315千伏安 | 315 | Compact type in a shared box | Temporary electricity, small construction site |
| American-style – 500千伏安 | 500 | Compact type in a shared box | Industrial park, temporary electricity |
| American type – 630千伏安 | 630 | Compact type in a shared box | Industrial parks, small and medium-sized factories |
| American type – 800千伏安 | 800 | Compact type in a shared box | Commercial center, factory |
- Huashi box transformer – dedicated for new energy
The Huashi box-type substation is a new type of box-type substation that has developed rapidly in recent years, mainly used in the fields of photovoltaic power generation and wind power generation. The high-voltage switch is independent of the oil tank, making maintenance and repair more convenient.
| Capacity specification (千伏安) | high-voltage side voltage | Low-voltage side voltage | Main applications |
| 630-1600 | 12kV/40.5kV | 0.4kV/0.69kV/0.8kV/1.14kV | Distributed photovoltaic power station |
| 2000-2500 | 12kV/40.5kV | 0.69kV/0.8kV | Centralized photovoltaic power station |
| 3150-4000 | 40.5电压 | 0.8kV/1.14kV | Large-scale photovoltaic power stations, wind power generation |
Huaquan Power can customize Hua-style box transformers according to customer needs, with power options ranging from 630kVA to 4000kVA, suitable for new energy projects of different scales.
4.Capacity Selection Guide
- Select capacity based on electricity usage scenarios
| Electricity usage scenario | Typical electrical load | Recommended box transformer capacity | explanation |
| Road lighting (1 km) | 20-50千瓦 | 50-100千伏安 | Street lights, traffic signals |
| Small charging station (4-6 charging piles) | 200-300千瓦 | 315-400千伏安 | Primarily slow charging piles |
| Small residential community (200 家庭) | 400-600千瓦 | 500-630千伏安 | Each household is calculated based on 2-3 千瓦 |
| Medium-sized residential community (500 家庭) | 1000-1500千瓦 | 1000-1250千伏安 | Including public facilities such as elevators and water pumps |
| Large residential community (1000 households+) | 2000-3000千瓦 | 1600-2000千伏安 | Multiple box transformers provide power supply in different zones |
| Medium-sized factory | 500-1000千瓦 | 630-1250千伏安 | Including motor-type loads |
| commercial complex | 800-2000千瓦 | 1000-2000千伏安 | Air conditioning, 灯光, elevator |
| 数据中心 | 1000-3000千瓦 | 1250-2500千伏安 | N+1 redundant configuration is required |
| Photovoltaic power station (5兆瓦) | 5000千瓦 | 3150-4000千伏安 (Huashi) | Step up to 10kV/35kV |
- Capacity selection calculation formula
Huaquan Power recommends the following method for preliminary estimation of the required box transformer capacity:
Box transformer capacity (千伏安) ≥ total power of electrical equipment (千瓦) ÷ 功率因数 (0.8~0.9) × 1.2 (reserved margin)
Calculation example 1 – residential community:
- 500 家庭, each calculated at 3kW: 500 × 3kW = 1500kW
- Taking into account the simultaneous coefficient (0.5-0.7): 1500 × 0.6 = 900 千瓦
- Suggested box transformer capacity: 900 ÷ 0.8 × 1.2 ≈ 1250千伏安
Calculation example 2 – small and medium-sized factories:
- Total power of equipment: 300 千瓦 (including multiple motors)
- A margin should be reserved for the starting current of the motor
- Suggested box transformer capacity: 300 ÷ 0.8 × 1.5 ≈ 630千伏安
- Precautions for model selection
| Precautions | explanation |
| Reserved expansion space | It is recommended to choose a capacity that is one level larger than the current demand, leaving room for future capacity expansion |
| Load type consideration | For inductive loads such as motors, a larger margin should be reserved, and the starting current should be 3-5 times the rated current |
| Environmental condition correction | In high-altitude areas (>1000 米) and high-temperature environments, transformers need to be derated or upgraded to a larger size |
| Primary/Standby differentiation | For single box-type substation power supply, select the main capacity; for multiple parallel units, design according to N+1 redundancy |
| Confirmation of voltage level | Confirm the high voltage (10电压, 20电压, or 35kV) provided by the power supply bureau |
5.Technical Features of Huaquan Box-type Substation
Huaquan power box-type substation has the following technical advantages:
| technical indicators | Huaquan Standard | explanation |
| rated voltage | 10kV/0.4kV | High-voltage side 10kV, low-voltage side 400V, three-phase four-wire |
| transformer capacity | 50-2500千伏安 | Covering all scenario requirements |
| Protection level | IP54 | 全封闭结构, dustproof, moisture-proof, and corrosion-resistant |
| 噪音水平 | ≤55dB | 低噪音, suitable for installation in residential areas |
| service life | ≥20 years | High-quality materials, durable and long-lasting |
| Shell material | Color steel plate/stainless steel/aluminum alloy | On-demand customization |
| structural form | European/YB series (mainstream) | American and Chinese styles can be customized as needed |
core configuration
- High-voltage unit: load switch, fuse, lightning arrester
- Transformer unit: oil-immersed or dry-type transformer (full copper winding)
- Low-voltage unit: molded case circuit breaker, capacitor compensation cabinet, outgoing line circuit
- Protection functions: five-prevention interlocking, 过载保护, short circuit protection, and phase loss protection
- 智能监控: An optional SCADA monitoring system is available, supporting remote monitoring and fault diagnosis
6.Common Issues
Q1: What is the most commonly used capacity for Huaquan box-type substations?
一个: The most commonly used capacity specifications for Huaquan power box-type substations are 630千伏安, 800千伏安, 1000千伏安, and 1250kVA. 他们之中, the 1000kVA model is the best-selling one, suitable for most residential areas, commercial centers, and small and medium-sized factories.
Q2: How to determine the required capacity of the box-type substation?
一个: You can estimate it according to the following steps:
- List all electrical devices and calculate the total power consumption
- Consider the starting current of motor-type loads (3-5 次)
- The selected box transformer capacity should be ≥ total power ÷ 0.8 × 1.2
- Contact Huaquan Power’s technical staff, provide a load list, and obtain professional selection advice
第三季度: Does Huaquan box-type substation support customization of high-voltage side voltage?
一个: 是的, we can. The high-voltage side of Huaquan’s power box-type substation can be customized to 10电压, 20电压, or 35kV, while the low-voltage side is standard at 400电压/230V, but can also be customized according to specific needs.
Q4: What is the difference between American-style and European-style box transformers?
一个:
- European-style box transformer (YB series): The high-voltage switchgear, transformer, and low-voltage power distribution equipment are arranged in separate compartments, ensuring high safety and convenient maintenance. It is Huaquan’s flagship product, 适合住宅区, commercial centers, ETC
- American-style box transformer: The transformer and high and low voltage equipment are designed in a shared box, 从而实现更小的尺寸和更低的成本. It is suitable for industrial parks, temporary power supply, 以及其他场景
Q5: Can Huaquan box-type substation be used in photovoltaic power stations?
一个: 是的, Huaquan Power can customize Hua-style box transformers specifically for photovoltaic and wind power generation scenarios. These transformers can step up the low-voltage power output from inverters to 10kV or 35kV for grid connection, with capacities ranging from 630kVA to 4000kVA.
📌总结: Huaquan Box-type Substation – A Power Distribution Expert with Comprehensive Capacity Coverage
The rated capacity of transformers in Huaquan’s power box-type substations ranges from 50kVA to 2500kVA, 和 European-style box-type substations (YB series) as the main products. Customization of American-style 和 Hua-style box-type substations is also available. Core capacity specifications include: 315千伏安, 400千伏安, 500千伏安, 630千伏安, 800千伏安, 1000千伏安, 1250千伏安, 1600千伏安, 2000千伏安, and 2500kVA.
| Product Series | Capacity range | Main applications |
| European-style box transformer (YB series) | 50-2500千伏安 | Residential areas, commercial centers, 工厂, 医院, and schools |
| American-style pad-mounted transformer | 315-800千伏安 | Industrial park, temporary electricity, 工地 |
| American-style box transformer | 630-4000千伏安 | Photovoltaic power station, wind power generation, and new energy boost |
The Huaquan box boasts advantages such as an IP54 high protection level (dust and moisture proof), a low noise level of ≤55dB (ideal for residential areas), 和 a service life of ≥20 years. For further technical details or selection advice, 请联系华泉电力客服.




