Gold Member Since 2007
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Ningbo Ville Electric Co., Ltd.

Substation, Transformer Substation manufacturer / supplier in China, offering Buried Light Box Type Transformer Substation, Power Plant for Gensets Output 100mw, Type Wdg off-Circuit Tap Changer for Transformers and so on.

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Buried Light Box Type Transformer Substation

FOB Price: US $15,000-1,800,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $15,000-1,800,000/ Piece
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Port: Ningbo, China
Production Capacity: 5000/Year
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Product Catalog
Power substation
30 Products
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Basic Info
  • Model NO.: DBW1A-12 Light Box-type
  • Structure: Fixed Board
  • Features2: Can Be Used for Advertising
  • Trademark: VILLE
  • Specification: IEC; ISO
  • HS Code: 85
  • Type: Distribution Metering Box
  • Features: High Reliability
  • Display: LED Display
  • Transport Package: Wooden Cases
  • Origin: Ningbo China
Product Description
1.DBW1A family buried substation is the latest research and development, to fill the gaps for the construction of a new city power grids box-type substation.
2.DBW1A series Buried (box) 6 ~ 10kV substation as a communication network, rated frequency 50Hz, rated capacity of 50 ~ 630KVA transformer substation devices independent sets for urban high-rise buildings, residential quarters, factories, mines, hotels, parks, railway and temporary facilities, indoor and outside spaces; can save a lot of urban land, especially the small size of the low height of the ground segment, do not block the view and affect the landscape, ideal for placing on the sidewalk or street.
Rated voltage: HV: 6/10kV, LV: 0.4kV  Capacity range: 30, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000kVA  Frequency: 50Hz  Phase: single-phase and 3-phase   Vector group: Dyn11, Yyn0   Impedance voltage: according to national standards  Operation environment: in the basement or the cellar Loss: reaching national standard S11 series parameters  Enclosure protection level: IP68  Noise level:≤ 55dB
Waterproof consideration for basic design and fabrication
Top: ventilation holes have effective rain-proof and water-proof capabilities;Side: carry out surface treatment for sides by waterproof concrete materials so that water can not penetrate from sides;Bottom: install waterproof concrete bearing base for buried transformer that is 300mm higher than the pit bottom. At usual time, water flowing from the ground into the pit will enter the ring channel under the base so that it will not immerse the buried transformer.  Lay sandy cobble at the bottom of the base so that water can penetrate into the ground more quickly. Buried type transformer can also operate when immersing in water for more than 0.5m for a certain period of time. It can withstand floods and can effectively improve the reliability of the power supply system. However, in order to ensure the safe and reliable operation of the transformer, it is suggested to check the water accumulation situation in the pit after floods and long time heavy rainfall and the rainy season. If there is too much water, pumping and cleaning should be carried out.
Buried type transformer - temperature rise control measures
The buried type transformer temperature rise control measures can be ensured by the following four ways:Transformer low temperature rise design, control the oil temperature at around 45K, far lower than the international regulated 60K; 
No.ItemUnitParameters
1Rated voltagekV12
2Rated frequencyHz50
3Rated current of load switchA630
4Main circuit thermal currentkA20
5Main circuit dynamic currentkA50
6Rated making current of main circuitkA50
7Rated active load breaking current 630
8Rated ring closed breaking currentA630
95% of rated active load breaking currentA31.5
10Rated breaking current of cable chargingA10
11Rated no-load breaking current of transformerA1600KVAq
12Rated breaking current of fusekA31.5
13Rated transfer currentA1500
14Mechanical durationtimes10000
151min power frequency withstand voltage to earth/between phases/disconnecting fracturekV42/48
16Lightning impulse withstand voltage to earth/between phases/disconnecting fracturekV75/85
17Rated pressure of SF6 (20ºCsurface pressure)Mpa0.045
18Annual leakage rate of SF6 ≤0.2%
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