Transformer Substation
01
Landscape Type Underground Prefabricated Substation
Features
● Compact Footprint
The landscape-type underground compact substation features a ground-level area of less than 3m² and an underground area of less than 6m², significantly reducing land occupation. It is ideal for land-scarce urban centers, commercial districts, and other areas with tight land resources.
● Aesthetic Integration with Environment
With diverse exterior designs, it harmonizes seamlessly with the surrounding landscape, suitable for installation in lawns or green belts without visual disruption. The light box-style switchgear design not only blends into urban scenery but also creates a warm, harmonious atmosphere at night through lighting effects.
● Energy Saving & Environmental Protection
Equipped with energy-efficient transformers, it effectively reduces no-load and load losses, cutting energy consumption and operational costs. The fully enclosed design ensures excellent insulation and heat dissipation, enhancing operational stability.
● Easy Installation
Requiring minimal site preparation, the substation allows simple, rapid installation. It can be positioned close to load centers for decentralized power supply, reducing investment in low-voltage cables and line losses.
● Low Maintenance
The underground transformer section is maintenance-free, significantly reducing maintenance costs and time.
● Multifunctionality
The ground-level light box can display public welfare announcements, property advertisements, and other messages, enhancing its practical functionality.
Operating conditions
1. Altitude: ≤1000m.
2. Ambient Temperature:
● Maximum air temperature: +40°C;
● Minimum air temperature: -40°C;
● Maximum monthly average temperature: +30°C;
● Maximum annual average temperature: +20°C.
3. Installation Environment:
● Free from explosive/corrosive liquids, gases, and dust;
● No severe vibration or impact at the installation site;
● Permitted to operate partially or fully submerged in water for limited periods.
4. Ground Acceleration (Seismic): Horizontal: <3m/s²; Vertical: <1.5m/s².
5. Power Supply Voltage Waveform: Approximately sinusoidal.
6. Three-Phase Power Symmetry: Three-phase supply voltages shall be roughly symmetrical.
Technical specifications
|
No. |
Items |
Unit |
HV electrical equipments |
Transformer |
LV electrical equipments |
|
1 |
Rated Voltage |
kV |
10 |
0.4 |
|
|
2 |
Maximum Working Voltage |
kV |
12 |
||
|
3 |
Rated Capacity |
kVA |
30-1600 |
||
|
4 |
Rated Current (Component) |
A |
5-630 |
50-3200 |
|
|
5 |
Short-time Withstand Time |
kA |
12.5, 16, 20 |
15-75 |
|
|
6 |
Rated Short-circuit Withstand Time |
S |
2 |
1 |
|
|
7 |
Peak Withstand Current |
kA |
20/31.5/4 |
30-165 |
|
|
8 |
Power Frequency Withstand Voltage (1min) |
kV |
42 |
35 |
5 |
|
9 |
Lightning Impulse Withstand Voltage |
kV |
75 |
75 |
|
|
10 |
Rated Breaking Current of High-voltage Current-limiting Fuse |
kA |
31.5 |
||
|
11 |
Noise Level |
dB |
≤48 |
||
|
12 |
Rated Frequency |
Hz |
50 |
Note: The above data is subject to change due to technical improvement.
Installation Diagram
