Structural features

The oil-immersed distribution transformer produced by our company adopts a new insulation structure to improve the short-circuit resistance; the iron core is made of high-quality cold-rolled silicon steel sheet; the high-voltage windings are made of high-quality oxygen-free copper wire, and Adopt multi-layer cylindrical structure; all solid parts are treated with special anti-loosening treatment.

Technical Features

The product has the characteristics of high efficiency and low loss, which can save a lot of power consumption and operating costs, and has significant social benefits. It is a popular new technology product.

reliable structure

structural improvement

1. Spiral coil with longitudinal oil channel, better internal heat dissipation;

2. The effective support of the coil end face is improved, and the ability to resist short-circuit current is stronger;

3. A new hoisting structure and body positioning structure are adopted to ensure more reliability in long-distance transportation and operation;

4. We also have many unique and reliable structures to serve you;

5. Selecting a transformer with a higher performance level will have a higher level of technical content.

high quality material

Oxygen-free copper wire

Oxygen-free copper wire with lower resistivity is selected, and after a series of additional surface treatments, it is smoother and has no burr sharp corners, so that the load loss of the transformer is lower and the electrical performance is more reliable.

High quality silicon steel sheet

High-quality silicon steel sheets are selected, and with the improvement of performance level, silicon steel sheets with lower unit loss are used, so that the no-load loss of the transformer is lower.

Premium quality laminated wood insulation

Choose high-quality laminated wood insulation, never crack, even under the action of short-circuit current, it will not move.

Deep filtered transformer oil

Using deep-filtered transformer oil with lower water, gas and impurity levels, the transformer works more reliably.

High quality rubber sealing material

Use high-quality rubber sealing materials to effectively prevent aging and prevent leakage.

Raw materials are inspected

All raw material manufacturers have passed the strict inspection according to the national standard ISO9000.

Good technical and economic performance

Performance

On the basis of the previous generation, the no-load loss of this series of products is reduced by an average of 30%; the no-load current is reduced by 70-85% compared with the previous generation; the average temperature rise is reduced by 10K, and the service life of the product is more than doubled. It can still run for a long time under the conditions; the operating noise of the product is reduced by 2-4 decibels on average.

fully sealed

Improved sealing structure

The oil tank adopts a fully-sealed structure. Compared with the ordinary oil-immersed transformer, the fully-sealed distribution transformer cancels the oil conservator. The wave fin of the oil tank replaces the oil pipe as the cooling and heat dissipation element. The corrugated oil tank is made of high-quality cold-rolled sheet on a special production line. , The wave fin can expand and shrink the volume of transformer oil, so as to isolate the transformer from the atmosphere, prevent and slow down the oil deterioration and insulation moisture, enhance the operational reliability, and maintain normal operation without maintenance. The surface of the corrugated fuel tank is coated with conformal paint after degreasing, rust removal and phosphating treatment, which is suitable for use in metallurgy, petrochemical, mining and other environments.

Transformer Product Standard

GB

GB 1094.1-1996 GB 1094.2-1996 JB/T10088-2004 GB 1094.3-2003 GB 1094.5-2003 GB/T 10237-1988 GB/T 6451-2008 GB/T 7595-1987 JB/T 3837-2010

Transformer usage conditions

Altitude

not more than 1000m

ambient temperature

The highest temperature +40℃ The hottest month average temperature +30℃ The highest annual average temperature +20℃ The outdoor minimum temperature is -25℃

Transformer special conditions of use (detailed when ordering)

Altitude

over 1000m

ambient temperature

Maximum temperature +40℃ Minimum temperature -25℃

Rated capacity (kvar)

Voltage combination and tap range (kv)

link group label

No-load loss (W)

Load loss (W)

No-load current ( %)

Short circuit impedance (%)

Body lifting weight

oil weight

gross weight

Dimensions (mm) (length Lx width Bx height H)

Installation size

High voltage (kV)

High pressure tap range %

Low voltage (kV)

5

6 6.3 10 10.5 11

±5 ±2x2.5

2×(0.22~0.24) or 0.22~0.24 

30

130

1.2

3

75

30

120

420x390x870

300/300

10

45

235

1.1

85

30

135

420x390x940

300/300

16

55

330

1

105

35

170

430x480x960

300/350

20

65

385

0.9

120

40

190

440x500x970

300/350

30

80

560

0.8

145

45

220

560x500x980

300/350

40

H0

100

700

0.8

3.5

165

50

250

600x520x990

350/350

50

Ii6

120

855

0.7

185

55

290

680x600x1000

350/350

63

145

1020

0.6

205

65

330

730x640x1030

400/400

80

160

1260

0.6

230

70

380

820x730x1060

400/400

100

190

1485

0.6

245

75

400

850x760x1080

400/400

125

230

1755

0.5

270

90

470

920x800x1100

400/400

160

290

2130

0.5

330

105

560

1010x900x1120

450/450

Note: High voltage tap range ±5% or ±2×2.5%; frequency 50Hz;