Buzz | Project Solutions Engineer+86 183 7066 5235
Bella | Application Engineer+86 136 9956 4381sales@sunengelec.com
EN
Start an Enquiry

YBD Series Landscape Type Underground Prefabricated Substation

Product 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

 

Installation Diagram

SUNENG

Product & Project Support

Questions about this topic? Contact Buzz, Project Solutions Engineer, to discuss your product requirements, drawings or technical documents.

Talk to SUNENG

Search SUNENG

Find products, solutions, project references and articles.