What is the rated capacity of Huaquan box-type substation?

1.What is the rated capacity coverage range of Huaquan box-type substation?

The transformer rated capacity of Huaquan power subestação tipo caixa (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, áreas residenciais, commercial centers, new energy power generation, e outros campos.

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: pequeno, medium, and large

The commonly used capacities of Huaquan Power’s box-type substations include 315kVA, 400kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1250kVA, 1600kVA, etc.. Entre eles, 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 e Hua-style box transformers according to customer needs.

1. 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, transformadores, and low-voltage power distribution devices according to a specific wiring scheme. It is a flagship product of Huaquan Power.

2. 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, resultando em um tamanho menor e menor custo. It is suitable for industrial parks, temporary power supply, e outros cenários.

3. 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.

Poder Huaquan 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

1. Select capacity based on electricity usage scenarios

2. Capacity selection calculation formula

Huaquan Power recommends the following method for preliminary estimation of the required box transformer capacity:

Box transformer capacity (kVA) ≥ total power of electrical equipment (kW) ÷ Power Factor (0.8~0.9) × 1.2 (reserved margin)

Calculation example 1 – residential community:

• 500 famílias, each calculated at 3kW: 500 × 3kW = 1500kW
• Taking into account the simultaneous coefficient (0.5-0.7): 1500 × 0.6 = 900 kW
• Suggested box transformer capacity: 900 ÷ 0.8 × 1.2 ≈ 1250kVA

Calculation example 2 – small and medium-sized factories:

• Total power of equipment: 300 kW (including multiple motors)
• A margin should be reserved for the starting current of the motor
• Suggested box transformer capacity: 300 ÷ 0.8 × 1.5 ≈ 630kVA

3. Precautions for model selection

5.Technical Features of Huaquan Box-type Substation

Huaquan power box-type substation has the following technical advantages:

configuração principal

• 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, proteção contra sobrecarga, short circuit protection, and phase loss protection
• Monitoramento inteligente: An optional SCADA monitoring system is available, supporting remote monitoring and fault diagnosis

6.Common Issues

1º trimestre: What is the most commonly used capacity for Huaquan box-type substations?

UM: The most commonly used capacity specifications for Huaquan power box-type substations are 630kVA, 800kVA, 1000kVA, and 1250kVA. Entre eles, the 1000kVA model is the best-selling one, suitable for most residential areas, commercial centers, and small and medium-sized factories.

2º trimestre: How to determine the required capacity of the box-type substation?

UM: You can estimate it according to the following steps:

1. List all electrical devices and calculate the total power consumption
2. Consider the starting current of motor-type loads (3-5 vezes)
3. The selected box transformer capacity should be ≥ total power ÷ 0.8 × 1.2
4. Contact Huaquan Power’s technical staff, provide a load list, and obtain professional selection advice

3º trimestre: Does Huaquan box-type substation support customization of high-voltage side voltage?

UM: Sim, 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?

UM：

• 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, adequado para áreas residenciais, commercial centers, etc.
• American-style box transformer: The transformer and high and low voltage equipment are designed in a shared box, resultando em um tamanho menor e menor custo. It is suitable for industrial parks, temporary power supply, e outros cenários

Q5: Can Huaquan box-type substation be used in photovoltaic power stations?

UM: Sim, 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, com European-style box-type substations (YB series) as the main products. Customization of American-style e Hua-style box-type substations is also available. Core capacity specifications include: 315kVA, 400kVA, 500kVA, 630kVA, 800kVA, 1000kVA, 1250kVA, 1600kVA, 2000kVA, and 2500kVA.

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), e a service life of ≥20 years. For further technical details or selection advice, please contact Huaquan Power’s customer service.