S-M.D Series Buried Power Transformer

Short Description:

S-M·D series three-phase buried oil immersed transformer produced by the company is a kind of compact power distribution equipment which installs transformer, high-voltage load switch, fuse for protection in the same oil tank. The high-voltage and low-voltage incoming and outgoing lines adopt fully insulated, fully sealed and fully shielded waterproof joints, which do not occupy the surface space, can be immersed in water for a certain period of time, and are maintenance free. It can be widely used in densely populated central city, streets, highways, bridges, tunnels, parking lots, airports, ports, tourist attractions and other power distribution systems, especially for places with strict requirements on height and floor area.


Product Detail

Product Tags

Product introduction

S-M·D series three-phase buried oil immersed transformer produced by the company is a kind of compact power distribution equipment which installs transformer, high-voltage load switch, fuse for protection in the same oil tank. The high-voltage and low-voltage incoming and outgoing lines adopt fully insulated, fully sealed and fully shielded waterproof joints, which do not occupy the surface space, can be immersed in water for a certain period of time, and are maintenance free. It can be widely used in densely populated central city, streets, highways, bridges, tunnels, parking lots, airports, ports, tourist attractions and other power distribution systems, especially for places with strict requirements on height and floor area.
In the product design, the special situation of ventilation and heat dissipation is fully considered, and the design of low loss and low temperature rise is adopted. According to the distribution mode, it can be divided into ring network distribution type and terminal distribution type to meet the different needs of users.

Model Meaning

Buried Power Transformer

Standards

GB/T 1094.1-2013 Power transformers - Part 1: General
GB/T 1094.2-2013 Power transformers - Part 2: Temperature rise for liquid-immersed transformers GB/T 1094.3-2017 Power transformers—Part 3:Insulation levels,dielectric tests and external clearances in air GB/T 1094.5-2008 Power transformers - Part 5: Ability to withstand short circuit
GB/T 1094.10-2003 Power transformers--Part 10: Determination of sound levels JB/T 10544-2018 Underground-typetransformers
IEC60076-1:2011 Power transformers - Part 1: General
IEC60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
IEC 60076-3:2013+AMD1:2018 Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air IEC 60076-5:2006 Power transformers - Part 5: Ability to withstand short circuit
IEC 60076-10:2016 Power transformers - Part 10: Determination of sound levels

Normal Environment conditions

1.The maximum operating ambient temperature is + 50 ℃ under natural ventilation, + 40 ℃ under forced ventilation, + 40 ℃ when the underground water depth does not exceed 1.5m, + 45 ℃ when the underground water depth exceeds 1.5m..
2.Altitude: No more than 1000m.
3.The power supply voltage's wave is similar to sine wave.
4.Three-phase power supply voltage is approximately symmetrical.
5.The total harmonic content of load current shall not exceed 5% of rated current;

Product characteristics

1.The product can be directly immersed in water or buried in underground tunnel, with protection grade of IP68.
2.High corrosion resistance stainless steel box, safe and reliable, maintenance free design.
3.All components are installed on the box shell to facilitate inspection and maintenance. High voltage side with back-up and plug-in fuse, to give the transformer more secure protection. Load switch can be terminal type or ring network type, suitable for a variety of power supply systems.
4.The core made of high permeability silicon steel sheet or amorphous alloy material has lower no-load loss.
5.The high and low voltage incoming and outgoing lines adopt fully insulated, fully sealed and fully shielded waterproof joints, which makes the operation safer.
6.It adopts buried transformer and billboard type low-voltage structure, which conforms to the urban ecological design concept, beautifies the environment and occupies a small area.

Transformer Product Selection (57)

S □ -M·D Technical Parameter

caRpaatecdity (kvA) Voltage combination cognrnoeucpted label diNssoi-ploaatidon (w) dissLiopaadtion (W)75℃ Ncuor-rIoeandt (%) Imvpoeltdaagnece (%) ExteIrniostraslilz4e-(ΦLx1W8 xH)
  High(kvVo)ltage Tarapnpgineg Low(kvoVl)tage            

30

 61.03 ±2x2.5  0.4  Dyonr11 Yyn0

100

600

1

 4.0

1025

625

995

50

       

135

870

0.9

 

1075

640

1025

63

       

155

1040

0.9

 

1125

665

1065

80

       

175

1250

0.8

 

1150

675

1095

100

       

205

1500

0.8

 

1180

695

1100

125

       

240

1750

0.7

 

1200

705

1110

160

       

275

2100

0.7

 

1235

725

1210

200

       

330

2500

0.7

 

1295

745

1240

250

       

400

2950

0.7

 

1365

755

1260

315

       

475

3500

0.7

 

1335

755

1320

400

       

570

4200

0.7

 

1395

780

1360

500

       

680

5000

0.7

 

1465

825

1440

630

       

805

6000

0.6

 4.5

1565

845

1460

800

       

980

7200

0.6

 

1685

925

1560

1000

       

1155

10000

0.6

 

1855

1095

1670

1250

       

1365

11800

0.6

 

1925

1195

1700

1600

       

1645

14000

0.6

 

1995

1235

1790

Transformer Product Selection (99)

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