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Introduction
The EU Standard Outdoor 11kV 800kVA 11/0.4kV Compact Transformer Substation, also known as a pre-installed substation, is designed in accordance with European standards and is part of the YB series. This advanced compact power solution integrates high-voltage switchgear, transformers, and low-voltage distribution equipment within a compact and sealed enclosure. It is suitable for a wide range of medium-voltage power distribution applications, including residential areas, commercial centers, industrial zones, infrastructure projects, and remote locations.
These compact substations are ideal for fast deployment, enhanced safety, minimal maintenance, and space-saving operation. The all-in-one design ensures rapid integration into power systems, supporting voltage levels from 6kV to 35kV and transformer capacities from 30kVA to 2500kVA.
Product Highlights
- Compact and Space-Efficient: Pre-installed modular design reduces floor area and simplifies installation.
- European Standard Design: Built to meet IEC and EU energy distribution norms.
- Fully Enclosed Structure: IP33 protection for high performance in outdoor conditions.
- High Safety and Reliability: Withstands short circuits, overloading, and harsh environments.
- Customizable Voltage and Capacity: Multiple voltage combinations, tap ranges, and connection types available.
- Flexible Installation: Suitable for urban, industrial, and remote areas.
- Eco-Friendly Operation: Low noise level, minimal temperature rise, and low maintenance.
Technical Parameters
High Voltage Chamber
| Description | Unit | Value |
|---|---|---|
| Rated Frequency | Hz | 50 |
| Nominal Voltage | kV | 6 / 10 / 35 |
| Maximum Operating Voltage | kV | 6.9 / 12 / 40.5 |
| Rated Current | A | 400, 630, 1250 |
| Transfer Current | A | 1200 – 2000 |
| Rated Short-Time Current | kA | 12.5 (2s/4s), 16 (2s/4s), 20 (2s/4s) |
| Rated Peak Withstand Current | kA | 31.5 / 40 / 50 |
| Power Frequency Withstand Voltage | kV | 32/36, 42/48, 95/118 |
| Lightning Impulse Withstand Voltage | kV | 60/70, 75/85, 185/215 |
| Rated Short-Circuit Breaking Current (Fuse) | kA | 31.5 |
| Switch Off No-Load Transformer Capacity | kVA | 2500 |
Transformer
| Description | Unit | Value |
| Rated Capacity | kVA | 30 – 2500 |
| Tap Range | % | ±2×2.5%, ±5% |
| Vector Group | – | Yyn0 / Dyn11 |
| Impedance Voltage | % | 4 / 4.5 / 6 / 8 |
| Nominal Voltage | V | 220 / 380 / 690 / 800 |
Low Voltage Chamber
| Description | Unit | Value |
| Rated Current of Main Loop | A | 50 – 4000 |
| Branch Current | A | 5 – 800 |
| Rated Short-Time Withstand Current | kA | 15 / 30 / 50 / 65 (1s) |
| Rated Peak Withstand Current | kA | 30 / 63 / 110 |
Enclosure
| Description | Unit | Value |
| Protection Class | – | IP33 (standard) |
| Noise Level | dB | ≤50 |
| Enclosure Temperature Rise | – | ≤10K |
Working Conditions
| Condition | Specification |
| Altitude | ≤2000m |
| Ambient Temperature | Max: +40°C, Min: -45°C |
| High Monthly Avg. Temperature | +30°C |
| High Annual Avg. Temperature | +20°C |
| Installation Environment | No explosive gas, dust, or corrosive substances; stable ground |
| Submersion | Allowed temporarily under water |
| Earthquake Resistance | Horizontal ≤3m/s², Vertical ≤1.5m/s² |
| Voltage Waveform | Approximate sine wave |
| Power Supply Balance | Suitable for symmetric three-phase supply |
Application Scenarios
The EU standard compact substation is engineered to serve a wide array of power distribution environments:
- Urban Power Grids: Ideal for densely populated areas requiring compact and quiet power delivery systems.
- Industrial Parks: Supports heavy-duty machinery and uninterrupted power needs.
- Commercial Buildings: Applicable for malls, office towers, and hospitality venues.
- Remote and Harsh Environments: Performs reliably in remote towns, offshore locations, and high-altitude regions.
- Renewable Energy Systems: Integrated with solar and wind power for efficient grid injection.
Advantages
- Rapid Installation: Delivered pre-assembled, reducing field construction time.
- Reduced Footprint: Compact design reduces land use and project costs.
- Ease of Maintenance: Modular layout with accessible compartments.
- Enhanced Safety: Separate HV, LV, and transformer rooms prevent arc flash and other hazards.
- Custom Engineering Support: Tailored for different capacities, voltages, and climate resilience.
Why Choose Our 11kV 800kVA Compact Substation?
- Compliance: Fully compliant with international and European standards.
- Versatility: Scalable to capacities between 30kVA to 2500kVA.
- Reliability: Proven track record of operational stability and efficiency.
- Support: Technical support from planning to commissioning and after-sales service.
