High Voltage / Low Voltage Modular Intelligent Prefabricated Substation
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High Voltage / Low Voltage Modular Intelligent Prefabricated Substation
Rated Power: Up to 1250kVA
Primary Voltage: 6kV, 6.3kV, 6.6kV, 10kV, 10.5kV, 11kV, 20kV, 22kV (Customized)
Secondary Voltage: 0.4kV (Customized)
Rated Breaking Load Current: 630A (Customized)
Phase: 3 phase
Frequency: 50Hz/60Hz
Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of high voltage / low voltage modular intelligent prefabricated substation in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced high voltage / low voltage modular intelligent prefabricated substation from our factory. Also, quotation is available.
Product Overview
The YB series prefabricated cabin substation is a compact, integrated power distribution unit that combines high-voltage switchgear, transformers, and low-voltage distribution equipment within a prefabricated cabin. Pre-assembled and tested at the factory, it is delivered as a complete unit and can be put into operation simply by connecting cables on site - truly plug-and-play.
Featuring a high-strength steel structure cabin with dust, moisture, and corrosion resistance, it is built to withstand harsh outdoor environments. Widely used in high-rise buildings, residential communities, development zones, factories, mines, oil fields, and temporary construction sites, it supports ring network, dual-power, and radial distribution systems, and can be hoisted, relocated, and reused as a whole.
Designed and manufactured in compliance with the international standard IEC 62271-202, the product delivers stable and reliable performance.
Product Advantages
- High Integration: Integrates all core components into one compact set, with strong completeness and no need for additional assembly.
- Space-Saving: Small size, compact structure, occupying only 1/10~1/5 of the area of traditional civil-built substations.
- Cost-Effective: Greatly reduces design, construction and maintenance costs, shortening the construction cycle.
- Strong Mobility: Flexible and easy to move, suitable for temporary power supply occasions.
- Safe & Reliable: Equipped with anti-misoperation interlocking functions, high-quality components and strict compliance with national standards.
- Easy Maintenance: Humanized design, convenient component replacement and inspection, reducing maintenance workload.
- Durable & Weather-Resistant: Anti-corrosion, waterproof, dustproof and thermal insulation, suitable for long-term outdoor use.
Core Structural Features
The product is composed of high-voltage distribution equipment, transformers and low-voltage distribution equipment, divided into three independent functional compartments: high-voltage compartment, transformer compartment and low-voltage compartment, with clear division of labor and efficient coordination.
Type Designation
Specification
|
Name |
Unit |
High-voltage |
Low-voltage |
Transformer |
|
Rated Voltage |
kV |
10 |
0.4 |
10/0.4 |
|
Rated Current |
A |
630 |
100～2500 |
|
|
Frequency |
Hz |
50 |
50 |
50 |
|
Rated Capacity |
kVA |
|
|
100～1250 |
|
Rated Thermal Stability Current |
kA |
20/4S |
30/1S |
|
|
Rated Dynamic Stability Current (Peak) |
kA |
50 |
63 |
|
|
Rated Closing Short-circuit Current (Peak) |
kA |
50 |
15～30 |
|
|
Rated Breaking Short-circuit Current |
kA |
31.5 |
|
|
|
Rated Breaking Load Current |
A |
630 |
|
|
|
1 min Power Frequency Withstand Voltage |
kV |
Phase-to-ground, Phase-to-phase 42, and Across-the-isolator 48 |
2.0/2.5 |
35/28 (5 min) |
|
Lightning Impulse Withstand Voltage |
kV |
Phase-to-ground, Phase-to-phase 75, and Across-the-isolator 85 |
|
75 |
|
Enclosure Protection Level |
|
IP23 |
IP23 |
IP23 |
|
Noise Level |
dB |
|
|
Oil-immersed ≤55 |
|
Number of Circuits |
pcs |
1～6 |
4～30 |
2 |
|
Maximum Reactive Power Compensation on Low Voltage Side |
kvar |
|
300 |
|
Structure Features
Operating Environmental Conditions
The YB series prefabricated substation is designed to adapt to a variety of outdoor environments, with strong environmental adaptability. The specific operating conditions are as follows:
- Ambient Air Temperature: Upper Limit ≤ +40℃, Lower Limit ≥ -10℃
- Sunlight Radiation: ≤ 1000W/m²
- Altitude: ≤ 1000m
- Ice Covering: ≤ 20mm
- Wind Speed: ≤ 35m/s
- Humidity: Daily average relative humidity ≤ 95%, monthly average relative humidity ≤ 90%; Daily average relative water vapor pressure ≤ 2.2kPa, monthly average relative water vapor pressure ≤ 1.8kPa
- Earthquake Intensity: ≤ 8°
- Location Requirements: Free from fire, explosion hazards, severe pollution, chemical corrosion and intense vibration
- Note: For special operating conditions, please coordinate with our manufacturer when placing an order, and we will provide customized solutions to meet your specific needs.
Application
- Urban high-rise buildings - compact footprint fits limited space in dense urban areas.
- Residential communities - reliable power supply for urban and rural residential districts.
- High-tech development zones - fast deployment for industrial parks and economic zones.
- Small and medium-sized factories - efficient power reception and distribution for industrial users.
- Mines and oil fields - rugged construction adapts to harsh, remote operating environments.
- Temporary construction sites - quick installation and easy relocation for temporary power needs.
Supporting ring network, dual-power, and radial distribution systems, it is an ideal solution for both new construction and renovation of urban and rural substations.
FAQ
Q: Is the substation AC or DC?
A: The vast majority of substations are AC (alternating current). They use transformers to step up or step down AC voltage and distribute AC power to end users. DC substations exist only in special HVDC (High-Voltage Direct Current) transmission systems. The YB series prefabricated cabin substation is an AC substation.
Q: What are the three main parts of a prefabricated substation?
A: A typical substation consists of three main parts: 1. High-voltage switchgear - receives incoming high-voltage power and includes circuit breakers, disconnect switches, and protection devices for control and safety. 2. Transformer - the core component that steps up or steps down the voltage to the required level. 3. Low-voltage distribution equipment - distributes the transformed power to outgoing feeders and end users, including low-voltage breakers, busbars, and metering devices.
Q: Which transformer is used in a substation?
A: The selection of a transformer mainly depends on the substation's voltage level and application:
• Power transformers - used in transmission substations (typically 110 kV and above) to step up voltage for long-distance transmission or step it down for distribution.
• Distribution transformers - used in distribution substations (10–35 kV) to step down medium voltage to low voltage (380/220V) for end users.
• Auto-transformers - used in large, high-voltage substations where the voltage ratio is moderate, offering higher efficiency and lower cost.
For the YB series prefabricated cabin substation, oil-immersed distribution transformers are typically used (dry-type is also available for indoor or fire-sensitive locations).
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