1.What is the rated capacity coverage range of Huaquan box-type substation?
The transformer rated capacity of Huaquan power коробка тип подстанций (referred to as “Huaquan box substation”) covers a range from 50kVA to 2500kVA, meeting various scenarios from residential area distribution to main substation in industrial parks.
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, илыме вер-влак, commercial centers, new energy power generation, да моло аланыште.
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: изи, medium, and large
| Capacity range | Typical capacity (кВА) | 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, школ-влак, больницы-влак | European/American style optional |
| Large box-type substation | 1600, 2000, 2500 | Industrial parks, large commercial complexes, данный рӱдер-влак, and new energy boosting | Huashi/customized type |
The commonly used capacities of Huaquan Power’s box-type substations include 315кВА, 400кВА, 500кВА, 630кВА, 800кВА, 1000кВА, 1250кВА, 1600кВА, да т. д.. Нунын коклаште […], 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 жана 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, трансформаторы, and low-voltage power distribution devices according to a specific wiring scheme. It is a flagship product of Huaquan Power.
| Specification Model | Rated capacity (кВА) | high-voltage side voltage | Low-voltage side voltage | Protection level | Applicable scenarios |
| YB-50kVA | 50 | 10kV | 0.4kV | IP54 | Small street lamps, charging piles |
| YB-100kVA | 100 | 10kV | 0.4kV | IP54 | Small shops, agritourism |
| YB-200kVA | 200 | 10kV | 0.4kV | IP54 | Small factories, озанлык-влак |
| YB-315kVA | 315 | 10kV | 0.4kV | IP54 | Small residential area, office building |
| YB-400kVA | 400 | 10kV | 0.4kV | IP54 | Medium-sized residential area, shopping mall |
| YB-500kVA | 500 | 10kV | 0.4kV | IP54 | Medium-sized residential area, больницыште |
| YB-630kVA | 630 | 10kV | 0.4kV | IP54 | Large residential community |
| YB-800kVA | 800 | 10kV | 0.4kV | IP54 | Large residential areas, завод-влак |
| YB-1000kVA | 1000 | 10kV | 0.4kV | IP54 | Industrial park, commercial complex |
| YB-1250kVA | 1250 | 10kV | 0.4kV | IP54 | Large factories, данный рӱдер-влак |
| YB-1600kVA | 1600 | 10kV | 0.4kV | IP54 | Large industrial park |
| YB-2000kVA | 2000 | 10kV | 0.4kV | IP54 | Large industrial and mining enterprises |
| YB-2500kVA | 2500 | 10kV | 0.4kV | 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, изирак кугыт да изирак роскотым ыштен. It is suitable for industrial parks, temporary power supply, да моло сценарий.
| Specification Model | Rated capacity (кВА) | structural characteristics | Applicable scenarios |
| American-style – 315кВА | 315 | Compact type in a shared box | Temporary electricity, small construction site |
| American-style – 500кВА | 500 | Compact type in a shared box | Industrial park, temporary electricity |
| American type – 630кВА | 630 | Compact type in a shared box | Industrial parks, small and medium-sized factories |
| American type – 800кВА | 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 (кВА) | 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 | 40.5kV | 0.8kV/1.14kV | Large-scale photovoltaic power stations, wind power generation |
Хуакуань куат 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) | 20-50кВт | 50-100кВА | Street lights, traffic signals |
| Small charging station (4-6 charging piles) | 200-300кВт | 315-400кВА | Primarily slow charging piles |
| Small residential community (200 еш-влак) | 400-600кВт | 500-630кВА | Each household is calculated based on 2-3 кВт |
| Medium-sized residential community (500 еш-влак) | 1000-1500кВт | 1000-1250кВА | Including public facilities such as elevators and water pumps |
| Large residential community (1000 households+) | 2000-3000кВт | 1600-2000кВА | Multiple box transformers provide power supply in different zones |
| Medium-sized factory | 500-1000кВт | 630-1250кВА | Including motor-type loads |
| commercial complex | 800-2000кВт | 1000-2000кВА | Air conditioning, волгалтарымаш, elevator |
| данный рӱдер | 1000-3000кВт | 1250-2500кВА | N+1 redundant configuration is required |
| Photovoltaic power station (5МВт) | 5000кВт | 3150-4000кВА (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 (кВА) ≥ total power of electrical equipment (кВт) ÷ Куатан коэффициент (0.8~0.9) × 1.2 (reserved margin)
Calculation example 1 – residential community:
- 500 еш-влак, each calculated at 3kW: 500 × 3kW = 1500kW
- Taking into account the simultaneous coefficient (0.5-0.7): 1500 × 0.6 = 900 кВт
- Suggested box transformer capacity: 900 ÷ 0.8 × 1.2 ≈ 1250кВА
Calculation example 2 – small and medium-sized factories:
- Total power of equipment: 300 кВт (including multiple motors)
- A margin should be reserved for the starting current of the motor
- Suggested box transformer capacity: 300 ÷ 0.8 × 1.5 ≈ 630кВА
- Precautions for model selection
| Лӱдыкшыдымылык | 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 метр) 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 (10kV, 20kV, 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 | 50-2500кВА | Covering all scenario requirements |
| Protection level | IP54 | Тӱрыснек петыралтше структур, dustproof, moisture-proof, and corrosion-resistant |
| йӱк кӱкшыт | ≤55dB | Изи йӱк, 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, перегруз деч аралыме, short circuit protection, and phase loss protection
- Ушан мониторинг: 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?
ИК: The most commonly used capacity specifications for Huaquan power box-type substations are 630кВА, 800кВА, 1000кВА, and 1250kVA. Нунын коклаште […], 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?
ИК: 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 гана)
- 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
Q3: Does Huaquan box-type substation support customization of high-voltage side voltage?
ИК: Ооба, we can. The high-voltage side of Huaquan’s power box-type substation can be customized to 10kV, 20kV, or 35kV, while the low-voltage side is standard at 400V/230V, but can also be customized according to specific needs.
Q4: What is the difference between American-style and European-style box transformers?
ИК:
- 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, илыме верлан келшыше, commercial centers, да т. д.
- American-style box transformer: The transformer and high and low voltage equipment are designed in a shared box, изирак кугыт да изирак роскотым ыштен. It is suitable for industrial parks, temporary power supply, да моло сценарий
Q5: Can Huaquan box-type substation be used in photovoltaic power stations?
ИК: Ооба, 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.
📌 Summary: 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, менен European-style box-type substations (YB series) as the main products. Customization of American-style жана Hua-style box-type substations is also available. Core capacity specifications include: 315кВА, 400кВА, 500кВА, 630кВА, 800кВА, 1000кВА, 1250кВА, 1600кВА, 2000кВА, and 2500kVA.
| Product Series | Capacity range | Main applications |
| European-style box transformer (YB series) | 50-2500кВА | Residential areas, commercial centers, завод-влак, больницы-влак, and schools |
| American-style pad-mounted transformer | 315-800кВА | Industrial park, temporary electricity, чоҥымо участке |
| American-style box transformer | 630-4000кВА | 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), жана a service life of ≥20 years. For further technical details or selection advice, please contact Huaquan Power’s customer service.




