Oil-immersed power transformer of 35kV

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Oil-immersed power transformer of 35kV


1.    Product

S9 series power transformer of 35kV is mainly used for the transmission and distribution in the power system of voltage level 35kV and rated frequency 50-60Hz, the capacity of it is 50-31500kVA. The iron core adopts silicon steel sheet with high permeability, full-oblique joints, no punching, and colligated and  taken up with semi-dry epoxy fiberglass banding. The fuel tank has three types of radiators: flat tube type, corrugated type and chip type.  The 800kVA above transformers  are equipped with gas relay, pressure relief valve, oil tank with diaphragm and remote thermometer components.

The transformers of 3150kVA and above are equipped with oil refiner.  The characteristics of products are low loss, low noise, save power and so on.


SZ9 series on-load-tap-changing power transformer of 35kV is equipped with tap changer, the voltage regulating range  of it is ± 3 × 2.5%.  The voltage adjustment  can be controlled by manual or automatic through control box. The structures,performances and characteristics of the transformer are as the same as the power transformer of S9 series for 35kV.


The products conform with the GB/T6451-2008 standards.


2.    Technical parameter


35kV S9 series distribution transformer technical parameter

Model

Rated Capacity

kVA

Rated voltage

kV

Loss

W

Impedance of short-circuit%

No-load current%

Label number of connecting group

Weight

kg

Outside DimensionL x W x Hmm

Gauge

mm

HV

LV

No-load

load

Body

Oil

Ttotal weight

S9-50/35

50

38.5±5%

35±5%

 0.4

0.21

1.27/1.21

6.5

2.0

Yyn0

Dyn11

345

260

820

1140×955×1760

550/550

S9-100/35

100

0.29

2.12/2.02

1.8

408

390

1070

1180×1070×1910

550/550

S9-125/35

125

0.34

2.50/2.38

1.7

415

470

1100

1180×1090×2000

550/550

S9-160/35

160

0.35

2.97/2.83

1.6

423

555

1295

1180×1100×2035

550/550

S9-200/35

200

0.43

3.50/3.33

1.5

524

655

1540

1260×1150×2075

550/550

S9-250/35

250

0.51

4.16/3.95

1.4

550

825

1755

1330×1200×2155

660/660

S9-315/35

315

0.61

5.01/4.77

1.4

640

945

2010

1390×1250×2220

660/660

S9-400/35

400

0.73

6.05/5.76

1.3

740

1125

2390

1720×1260×2285

660/660

S9-500/35

500

0.86

7.28/6.93

1.2

805

1289

2710

2045×1290×2415

660/660

S9-630/35

630

1.04

8.28

1.1

885

1455

3040

2155×1320×2250

820/820

S9-800/35

800

1.23

9.90

1.0

1050

1800

3700

2265×1340×2700

820/820

S9-1000/35

1000

1.44

12.15

1.0

1335

2115

4510

2495×1380×2885

820/820

S9-1250/35

1250

1.75

14.67

0.9

1445

2610

5045

2595×1410×2910

1070/1070

S9-1600/35

1600

2.12

17.55

0.8

1490

2840

5740

2680×1590×2970

1070/1070

Note Load values before / are for  Dyn11 connection and values after /” are for Yyn0 connection.


35kV no excitation voltage regulating power transformer technical parameter


Type specification

Rated Capacity

kVA

Rated voltagekV

Loss

W

Impedance of short-circuit

%

No-load current%

Label number of connecting group

Weightkg

Outside DimensionL x W x H

mm

Gaugemm

HV

LV

No-load

load

Body

Oil

Total weight

S9-800/35

800

38.5±5%

35±5%

3.5 6.3 10.5

1.23

9.9

6.5

1.0

Yd11

Ynd11

1150

1800

   3900

2265×1340×2700

820/820

S9-1000/35

1000

1.44

12.15

0.9

1335

2115

4510

2495×1380×2885

820/820

S9-1250/35

1250

1.76

14.67

0.8

1445

2610

5045

2595×1410×2910

1070/1070

S9-1600/35

1600

2.12

17.55

0.7

1490

2840

5740

2680×1590×2970

1070/1070

S9-2000/35

2000

2.72

19.35

0.6

1574

3280

6410

2690×1620×3100

1070/1070

S9-2500/35

2500

3.20

20.70

0.56

1885

3860

7695

2730×1900×3000

1070/1070

S9-3150/35

3150

3.80

24.30

0.56

2145

4610

8980

2660×2900×3100

1070/1070

S9-4000/35

4000

4.52

28.80

0.48

2270

5330

10060

2800×2865×3365

S9-5000/35

5000

5.40

33.03

0.48

2580

6330

11670

3460×2940×3430

S9-6300/35

6300

6.56

36.90

0.42

2840

7440

13430

3800×2770×3355

S9-8000/35

8000

9.00

40.50

0.42

3500

9650

17200

4400×3000×3520

S9-10000/35

10000

10.88

47.70

0.40

4400

12200

21000

3800×3550×3750

S9-12500/35

12500

12.60

56.70

0.40

5000

13740

24500

4500×5650×3900

S9-16000/35

16000

15.20

69.30

0.40

5520

16800

27800

4800×3700×4050

S9-20000/35

20000

18.00

83.70

0.32

5900

19020

31100

5240×3830×4040

S9-25000/35

25000

21.38

99.00

0.32

7200

23400

37600

5520×3800×4460

S9-31500/35

31500

25.28

118.80

1.0

7660

26080

42200

5660×3800×4590



35kV  2000~12500kVA load voltage regulating power transformer technical parameter

type Specification

Rated Capacity(kVA)

Rated voltage

(kV)

Loss (kW)

Impedance of short-circuit(%)

Label number of connecting group

Weight(kg)

No-load current

A

No-load

Load

Body

Oil

Total weight

SZ9-2000/35

2000

35

2.88

20.25

6.5

Yd11

2.9

20.25

0.9

0.80

SZ9-2500/35

2500

3.40

21.73

3.44

21.74

0.9

0.80

SZ9-3150/35

3150

38.5   35

4.04

26.01

7.0

4.09

26.0

0.81

0.72

SZ9-4000/35

4000

4.84

30.69

4.95

30.7

0.81

0.72

SZ9-5000/35

5000

5.80

36.00

5.85

36.0

0.77

0.68

SZ9-6300/35

6300

7.04

38.70

YNd11

7.02

38.7

0.77

0.68

SZ9-8000/35

8000

9.84

42.75

7.5

10.0

42.7

0.68

0.60

SZ9-10000/35

10000

11.60

50.58

11.7

50.6

0.68

0.56

SZ9-12500/35

12500

13.68

59.85

8.0

13.77

59.85

0.63

0.54



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