The 11kV compact substation integrates the high-voltage compartment, transformer compartment and low-voltage compartment into a single fully sealed compact unit. Its successful application in various fields (e.g. industrial parks, renewable energy plants, urban power grids) proves it to be a safe, reliable and energy-efficient power solution.
Key Components
High-voltage (HV) Compartment
Function: houses HV electrical equipment
Main Equipment:
HV Load Switch
HV Fuse
HV Arrester
HV Live Display Device
HV Cable Connector
Transformer Compartment
Function: contains the power transformer
Features:
Typically uses oil immersed or dry type transformers
Equipped with temperature monitoring and ventilation systems
Includes anti-condensation measures.
Low-voltage (LV) Compartment
Function: houses LV distribution equipment
Main Equipment:
LV Circuit Breaker
Metering Device
Reactive Power Compensation Device
LV Outgoing Switch
Protection and Control Device
Auxiliary System
Enclosure is made of steel plates or non-metallic materials, with anti-corrosion, waterproof and dustproof functions.
Ventilation system ensures proper heat dissipation, with both natural and forced cooling options.
Lighting system serves as internal working lights and external indicator lights.
Safety system comprises door locks, grounding devices, safety warning signs, etc.
Specification
| Rated capacity (kVA) | Voltage combination | Connection group symbol | No-load loss(W) | Load loss (75℃ W) | No-load current % | Short-circuit impedance % | ||
| H.V.(kV) | High pressure tapping | L.V.(V) | ||||||
| 30 | 6 6.3 10 10.5 11 12.47 13.2 1.38 | ±2×2.5 ±5 | 120 220 380 400 440 480 600 | Dyn11 | 100 | 630 | 2.1 | 4.0 |
| 50 | 130 | 910 | 2 | |||||
| 63 | 150 | 1090 | 1.9 | |||||
| 80 | 180 | 1310 | 1.8 | |||||
| 100 | 200 | 1580 | 1.6 | |||||
| 125 | 240 | 1890 | 1.5 | |||||
| 160 | 280 | 2310 | 1.4 | |||||
| 200 | 340 | 2730 | 1.3 | |||||
| 250 | 400 | 3200 | 1.2 | |||||
| 315 | 480 | 3830 | 1.1 | |||||
| 400 | 570 | 4520 | 1 | |||||
| 500 | 680 | 5410 | 1 | |||||
| 630 | 810 | 6200 | 0.9 | 4.5 | ||||
| 800 | 980 | 7500 | 0.8 | |||||
| 1000 | 1150 | 10300 | 0.7 | |||||
| 1250 | 1360 | 12000 | 0.6 | |||||
| 1600 | 1640 | 14500 | 0.5 | |||||
Features
Compact Design: small footprint, space-saving
Prefabricated Construction: factory-assembled for easy on-site installation
Modular Structure: facilitates future expansion and maintenance
Superior Safety: fully enclosed design with a high protection rating
Application
The 11kV compact substation is tailored for the following field:
1. Urban Power Distribution Networks – residential power supply, commercial complexes
2. Industrial Sector – factory workshop power distribution, mining/oilfield power supply
3. Infrastructure Projects – rail transit, hospitals, data centers
4. New Energy Area – photovoltaic/wind power grid connection, charging stations
5. Special Scenarios – temporary power supply, rural grid upgrades
Strands & Testing
1.Voltage ratio measurement and connection group label verification
2.Direct current resistance
3.Insulation resistance
4.Insulating oil and sealing test