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Oil-immersed Silicon Steel Planar Transformer

Silicon steel material is a silicon alloy steel which containing1.0 ~ 4.5% silicon , and less than 0.08% carbon , with core loss and magnetic induction strength as the product magnetic guarantee value, its high permeability, low coercivity, large resistivity and other characteristics. The transformer core has the advantages of high magnetic induction, small size, light weight, saving iron core, wire, insulation and structural materials, easy assembly and transportation.
 
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Product Presentation


Silicon steel material is a silicon alloy steel which containing1.0 ~ 4.5% silicon , and less than 0.08% carbon , with core loss and magnetic induction strength as the product magnetic guarantee value, its high permeability, low coercivity, large resistivity and other characteristics. The transformer core has the advantages of high magnetic induction, small size, light weight, saving iron core, wire, insulation and structural materials, easy assembly and transportation.


This series of products implement the national standard GB1094《Power transformer》, GB/T6451 《Three-phase oil-immersed power transformer technical parameters and requirements and GB20052 《Power transformer energy efficiency limit value and energy efficiency grade》.

At present, this series of transformers is mainly divided into three levels according to energy efficiency levels, namely S22 primary energy efficiency (NX1), S20 secondary energy efficiency (NX2), and S13 tertiary energy efficiency (NX3).


Structural Features


● The transformer core adopts high magnetic orientation silicon steel with mature technology, low resignation loss, less heat, small size, high mechanical strength and strong short-circuit resistance.


● The coil is mostly round or oval, the high voltage is wound with acetal enamelled wire, and the low voltage is wound with flat wire or copper foil, which increases the ability of short circuit.


●  Dyn11 is designed to avoid the higher harmonics and its strong resistance to the load imbalance which significantly improved the quality of power supply.


● Vacuum oiling is adopted by the transformer to completely rule out the air bubbles of the coil and  ensure the stability of insulating property.


● The oil tank adopts the structure of fully sealed corrugated tank, when the wave depth of the corrugated sheet is greater than 250mm, the corrugated sheet adopts double groove structure. During the operation of the transformer, the phenomenon of the oil level dropping and burning switch caused by the plastic deformation of the corrugated sheet is avoided, and the operation reliability of the transformer is improved.


● Transformer oil is completely seperated from the surrounding air, which will not absorb external moisture, and will not reduce insulation strength. So it can delay the aging of insulation materials, improve the service life of the product, and improve social benefits.


Technical performance parameters


10kV oil-immersed three-phase double-winding distribution transformer energy efficiency class

Rated Capacity
(KVA)

Primary energy efficiency

Secondary energy efficiency

Tertiary energy efficiency

Impedance

silicon steel

silicon steel

silicon steel

no-load loss

load loss

no-load loss

load loss

no-load loss

load loss

Dyn11/Yzn11

Yyn0

Dyn11/Yzn11

Yyn0

Dyn11/Yzn11

Yyn0

30

65

455

430

70

505

480

80

630

600

4

50

80

655

625

90

730

695

100

910

870

63

90

785

745

100

870

830

110

1090

1040

80

105

945

900

115

1050

1000

130

1310

1250

100

120

1140

1080

135

1265

1200

150

1580

1500

125

135

1360

1295

150

1510

1440

170

1890

1800

160

160

1665

1585

180

1850

1760

200

2310

2200

200

190

1970

1870

215

2185

2080

240

2730

2600

250

230

2300

2195

260

2560

2440

290

3200

3050

315

270

2760

2630

305

3065

2920

340

3830

3650

400

330

3250

3095

370

3615

3440

410

4520

4300

500

385

3900

3710

430

4330

4120

480

5410

5150

630

460

4460

510

4960

570

6200

4.5

800

560

5400

630

6000

700

7500

1000

665

7415

745

8240

830

10300

1250

780

8640

870

9600

970

12000

1600

940

10440

1050

11600

1170

14500

2000

1085

13180

1225

14640

1360

18300

5

2500

1280

13360

1440

14840

1600

21200


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