distribution transformer with cable box

20kV distribution transformer with cable box

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The 20kV distribution transformer with cable boxadopts advanced design and meets IEC60076 standards. Without such device like conservator air breather, so it ensures that transformer oil is not in contact with air improving the anti-oxidation capacity of the transformer oil. The tank is corrugated type, the corrugated fins cans swell and shrink with the change of transformer oil, so that the pressure can be maintained inside the tank, increase its reliability and anti-corrosion capability. With sealing material parts made of high quality acrylic rubber , it can effectively prevent against light-aging and heat aging.

20kV three-phase double windings NLTC distribution transformer

Rated capacity

kVA

 

Voltage combination and range of tapping

Vector group

No-load loss

W

 

Load loss

W

 

No-load current

%

 

Short circuit impedance

%

HV

range of tapping

LV

30

20

±2×2.5%

0.4

Dyn11

100

690

2.1

5.0

50

130

1010

2.0

63

150

1200

1.9

80

180

1440

1.8

100

200

1730

1.6

125

240

2080

1.5

160

290

2540

1.4

200

340

3000

1.3

250

400

3520

1.2

315

480

4210

1.1

400

570

4970

1.0

6

500

680

5940

1.0

630

810

6820

0.9

800

980

8250

0.8

1000

1150

11330

0.7

1250

1380

13200

0.7

1600

1660

15950

0.6

Above mentioned parameter are only for reference, ROCKWELL is able to design products according to specific requirements from end users.

20kV distribution transformer with cable box is the latest research and development of products。