6.6kV 10kv 22kv 500kva Full-sealed distribution transformer

Information

Description

Summary

The three-phase oil-immersed distributing transformer applies new type insulating structure and makes short-circuit resistance strong. The iron core is made of high-quality cold-rolled silicon-steel plate. High-voltage winding group is made up of high-quality oxygen-free copper lines and it adopts multilayered drum type structure. All fasteners have been processed with special treatment to prevent them from loosening.

electrical power transformers

Reliable Structure

1. Spiral loops with longitudinal oil path to produce a better interior cooling effect;
2. Improve the effectual support of the loop’s terminal face to strengthen the anti-short circuit electricity capability;
3. New suspending structure and instrument-positioning frames to guarantee that the long distance transport and movement will be more reliable.

Excellent Materials

1. Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
2. High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
3. High-quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit.
4. Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.
5. High-quality rubber sealing material, which can prevent the transformers form aging or leakage.

Good Technology

Compare with S7 series product, S9 series product reduces the no-load loss by 10%, load loss by 24% and no-load electric current by 46%; as a result, the operating cost will drop by 19%. Improved from S9 series product, S11 series product reduces the no-load loss by 20%; no-load electric current by 70%85%; average temperature by 10K; noise level by 2-4db; and double the products’ service life. Even under 20% overloads, it can also work for a long period of time.

Rated power
(kVA)

High Voltage
(kV)

H.V Tap range

Low Voltage
(kV)

Short-Circuit Impedance(%)

No-load Loss
(W)

On-Load Loss
(W)

No-load Current
(%)

9 Type

10 Type

11 Type

9 Type

10 Type

11 Type

30

6
6.3
10
10.5

±5%
±2×2.5%

0.4

4

130

110

100

600

600

600

2.1

50

170

150

130

870

870

870

2

63

200

180

150

1040

1040

1040

1.9

80

250

200

180

1250

1250

1250

1.8

100

290

230

200

1500

1500

1500

1.6

125

340

270

240

1800

1800

1800

1.5

160

400

310

280

2200

2200

2200

1.4

200

480

380

340

2600

2600

2600

1.2

250

560

460

400

3050

3050

3050

1.2

315

670

540

480

3650

3650

3650

1.1

400

800

650

570

4300

4300

4300

1

500

960

780

680

5150

5150

5150

1

630

4.5

1200

920

810

6200

6200

6200

0.9

800

1400

1120

980

7500

7500

7500

0.8

1000

1700

1320

1150

10300

10300

10300

0.7

1250

1950

1560

1360

12000

12000

12000

0.6

1600

2400

1880

1640

14500

14500

14500

0.6

2000

5

2830

2270

1940

17140

17140

17140

0.6

2500

3350

2690

2300

20260

20260

20260

0.5