01
10~35kV Three Phase Oil Immersed Power Transformer
Structural characteristics
● Winding structure: The high-voltage winding adopts multi-layer cylindrical and continuous structures to improve the impact distribution of the winding; The low-voltage winding adopts cylindrical and spiral structures, with high mechanical strength, balanced distribution of ampere turns, and strong short-circuit resistance.
● Core: Adopting high-quality cold-rolled grain oriented silicon steel sheets with fully oblique seam stacking method, the electrical and mechanical strength of the transformer is improved.
● Cooling system: relying on insulating oil as the cooling medium, heat is carried away through the circulation of oil to achieve cooling. According to different cooling methods, it can be divided into oil immersed self cooling, oil immersed air cooling, oil immersed water cooling, forced oil circulation, etc.
● Protective devices: equipped with gas relays, oil pillows, explosion-proof pipes and other protective devices. Gas relay is used to detect the gas generated when there is a fault inside the transformer oil tank, oil pillow is used to adjust the oil volume, and explosion-proof pipe is used to prevent excessive pressure inside the transformer.
Application
Power system: widely used in power systems of 35kV and below, it is the main substation equipment for small and medium-sized substations, used to reduce high voltage to low voltage suitable for user.
Industrial field: Used for power equipment in industrial production, providing high-power current for industrial machinery and equipment.
Railway system: widely used in railway systems to convert high voltage current into low voltage current suitable for train use.
New energy generation: In the field of new energy such as wind power and photovoltaic power generation, 35kV oil immersed transformers are commonly used to connect power generation equipment and the power grid.
Urban power grid: used for substations, distribution rooms, etc. in cities to meet the electricity needs of urban residents and commercial users.
Product Features
Lower cost: Compared to dry-type transformers, oil immersed transformers have lower costs.
Good heat dissipation performance: The cooling effect of insulating oil is significant, which can effectively reduce the operating temperature of transformers.
High insulation performance: Insulating oil provides good insulation effect, improving the safety and reliability of transformers.
Wide applicability: Suitable for full voltage level scenarios.
Technical Parameter
Rated voltage: 35kV and below.
Rated capacity: The common capacity range is 630~3150kVA.
Frequency: 50Hz/60Hz.
Cooling methods: Oil immersed self cooling, oil immersed air cooling, etc.
Insulation method: Oil insulation.
Date Sheet of Typical Products
The energy efficiency level of 35 kV oil immersed three phase double-winding no-load tap-changing power transformer
|
Rated capacity
|
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance
|
|||
|
No-Load
Loss
|
Load Loss
(75℃)
|
No-Load
Loss
|
Load Loss
(75℃)
|
No-Load
Loss
|
Load Loss
(75℃)
|
||
|
3150 |
1.7 |
20.7 |
2.0 |
20.7 |
2.4 |
21.9 |
7 |
|
4000 |
2.0 |
24.6 |
2.3 |
24.6 |
2.9 |
25.9 |
|
|
5000 |
2.4 |
28.2 |
2.8 |
28.2 |
3.5 |
29.7 |
|
|
6300 |
2.9 |
31.5 |
3.4 |
31.5 |
4.2 |
33.3 |
8 |
|
8000 |
4.0 |
34.6 |
4.7 |
34.6 |
5.8 |
36.5 |
|
|
10000 |
4.8 |
40.8 |
5.7 |
40.8 |
7.0 |
43.0 |
|
|
12500 |
5.5 |
48.4 |
6.5 |
48.4 |
8.0 |
51.1 |
|
|
16000 |
6.7 |
59.2 |
7.9 |
59.2 |
9.7 |
62.5 |
|
|
20000 |
7.9 |
71.6 |
9.4 |
71.6 |
11.5 |
75.5 |
|
|
25000 |
9.4 |
84.6 |
11.1 |
84.6 |
13.6 |
89.3 |
10 |
|
31500 |
11.1 |
100.8 |
13.1 |
100.8 |
16.2 |
106.4 |
|
The energy efficiency level of 35 kV oil-immersed three-phase double-winding OLTC power transformer
|
Rated capacity
|
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance
|
|||
|
No-Load
Loss
|
Load Loss
(75℃)
|
No-Load
Loss
|
Load Loss
(75℃)
|
No-Load Loss kW |
Load Loss (75℃) kW |
||
|
3150 |
1.8 |
22.2 |
2.1 |
22.2 |
2.6 |
23.5 |
7 |
|
4000 |
2.1 |
26.2 |
2.5 |
26.2 |
3.1 |
27.6 |
|
|
5000 |
2.6 |
30.8 |
3.0 |
30.8 |
3.7 |
32.5 |
|
|
6300 |
3.1 |
33.0 |
3.7 |
33.0 |
4.5 |
34.9 |
7.5 |
|
8000 |
4.3 |
36.5 |
5.1 |
36.5 |
6.3 |
38.6 |
|
|
10000 |
5.1 |
43.2 |
6.0 |
43.2 |
7.4 |
45.6 |
|
|
12500 |
6.0 |
51.1 |
7.1 |
51.1 |
8.7 |
54.0 |
8 |
|
16000 |
7.2 |
63.3 |
8.5 |
63.3 |
10.5 |
66.8 |
|
|
20000 |
8.5 |
74.4 |
10.1 |
74.4 |
12.4 |
78.6 |
|
|
25000 |
10.1 |
88.0 |
11.9 |
88.0 |
14.6 |
92.9 |
10 |
|
31500 |
12.0 |
104.4 |
14.2 |
104.4 |
17.4 |
110.2 |
|
The energy efficiency level of 10 kV oil immersed three phase double-winding no-load tap-changing power transformer
|
Rated capacity kVA |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
Short circuit impedance
|
|||||||||||||||
|
Electrical steel strip |
Amorphous alloy |
Electrical steel strip |
Amorphous alloy |
Electrical steel strip |
Amorphous alloy |
||||||||||||||
|
No -Load Loss W |
Load Loss |
No -Load Loss W |
Load Loss |
No -Load Loss W |
Load Loss |
No -Load Loss W |
Load Loss |
No -Load Loss W |
Load Loss |
No- Load Loss W |
Load Loss |
||||||||
|
Dyn11/Yzn11 |
Yyn0 |
Dyn11/Yzn11 |
Yyn0 |
Dyn11/Yzn11 |
Yyn0 |
Dyn11/Yzn11 |
Yyn0 |
Dyn11/Yzn11 |
Yyn0 |
Dyn11/Yzn11 |
Yyn0 |
||||||||
|
30 |
65 |
455 |
430 |
25 |
510 |
480 |
70 |
505 |
480 |
33 |
535 |
510 |
80 |
630 |
600 |
33 |
630 |
600 |
4.0 |
|
50 |
80 |
655 |
625 |
35 |
735 |
700 |
90 |
730 |
695 |
43 |
780 |
745 |
100 |
910 |
870 |
43 |
910 |
870 |
|
|
63 |
90 |
785 |
745 |
40 |
880 |
840 |
100 |
870 |
830 |
50 |
930 |
890 |
110 |
1090 |
1040 |
50 |
1090 |
1040 |
|
|
80 |
105 |
945 |
900 |
50 |
1060 |
1010 |
115 |
1050 |
1000 |
60 |
1120 |
1070 |
130 |
1310 |
1250 |
60 |
1310 |
1250 |
|
|
100 |
120 |
1140 |
1080 |
60 |
1270 |
1215 |
135 |
1265 |
1200 |
75 |
1350 |
1285 |
150 |
1580 |
1500 |
75 |
1580 |
1500 |
|
|
125 |
135 |
1360 |
1295 |
70 |
1530 |
1450 |
150 |
1510 |
1440 |
85 |
1615 |
1540 |
170 |
1890 |
1800 |
85 |
1890 |
1800 |
|
|
160 |
160 |
1665 |
1585 |
80 |
1870 |
1780 |
180 |
1850 |
1760 |
100 |
1975 |
1880 |
200 |
2310 |
2200 |
100 |
2310 |
2200 |
|
|
200 |
190 |
1970 |
1870 |
95 |
2210 |
2100 |
215 |
2185 |
2080 |
120 |
2330 |
2225 |
240 |
2730 |
2600 |
120 |
2730 |
2600 |
|
|
250 |
230 |
2300 |
2195 |
110 |
2590 |
2470 |
260 |
2560 |
2440 |
140 |
2735 |
2610 |
290 |
3200 |
3050 |
140 |
3200 |
3050 |
|
|
315 |
270 |
2760 |
2630 |
135 |
3100 |
2950 |
305 |
3065 |
2920 |
170 |
3275 |
3120 |
340 |
3830 |
3650 |
170 |
3830 |
3650 |
|
|
400 |
330 |
3250 |
3095 |
160 |
3660 |
3480 |
370 |
3615 |
3440 |
200 |
3865 |
3675 |
410 |
4520 |
4300 |
200 |
4520 |
4300 |
|
|
500 |
385 |
3900 |
3710 |
190 |
4380 |
4170 |
430 |
4330 |
4120 |
240 |
4625 |
4400 |
480 |
5410 |
5150 |
240 |
5410 |
5150 |
|
|
630 |
460 |
4460 |
250 |
5020 |
510 |
4960 |
320 |
5300 |
570 |
6200 |
320 |
6200 |
4.5 |
||||||
|
800 |
560 |
5400 |
300 |
6075 |
630 |
6000 |
380 |
6415 |
700 |
7500 |
380 |
7500 |
|||||||
|
1000 |
665 |
7415 |
360 |
8340 |
745 |
8240 |
450 |
8800 |
830 |
10300 |
450 |
10300 |
|||||||
|
1250 |
780 |
8640 |
425 |
9720 |
870 |
9600 |
530 |
10260 |
970 |
12000 |
530 |
12000 |
|||||||
|
1600 |
940 |
10440 |
500 |
11745 |
1050 |
11600 |
630 |
12400 |
1170 |
14500 |
630 |
14500 |
|||||||
|
2000 |
1085 |
13180 |
550 |
14000 |
1225 |
14640 |
710 |
14800 |
1360 |
18300 |
720 |
18300 |
5.0 |
||||||
|
2500 |
1280 |
13360 |
670 |
15450 |
1440 |
14840 |
860 |
16300 |
1600 |
21200 |
865 |
21200 |
|||||||