35kV three-phase power transformer
The 35kV three-phase oil immersed on load tap changer power transformer has undergone a series of major reforms in materials, processes, and structures. It has the characteristics of small size, light weight, high efficiency, low loss, low noise, and reliable operation, which can reduce a large amount of power grid losses and operating costs, and has significant economic benefits. Suitable for power plants, substations, large industrial and mining enterprises, etc.
Environmental conditions for use
1. Device type: Outdoor type
2. Environmental temperature: maximum temperature+40 ºC, minimum temperature -30 ºC
3. Altitude: ≤ 1000 meters (>1000 meters, temperature rise needs to be corrected)
4. Relative temperature: ≤ 90% (25 ºC)
5. Installation location: areas without corrosive gases, obvious dirt, etc
Product Parameters
630kVA-31500kVA three-phase dual winding non excited voltage regulating power transformer
|
rated capacity
(KVA)
|
Voltage combination and tap range |
Connection group label |
no-load loss
KW(9) |
load loss
KW(9) |
no-load current(%) |
short circuit impedance |
| high pressure(KV) |
Tapping range of high voltage |
low pressure(KV) |
| 630 |
35 |
±2×2.5%±5 |
3.15
6.3
10.5 |
Yd11 |
0.830 |
7.86 |
0.65 |
6.5% |
| 800 |
0.980 |
9.40 |
0.65 |
| 1000 |
1.15 |
11.5 |
0.65 |
| 1250 |
1.40 |
13.9 |
0.55 |
| 1600 |
1.69 |
16.6 |
0.45 |
| 2000 |
2.17 |
18.3 |
0.45 |
| 2500 |
2.56 |
19.6 |
0.45 |
| 3150 |
35-38.5 |
±2×2.5%±5 |
3.15
6.3
10.5 |
3.04 |
23.0 |
0.45 |
7.0% |
| 4000 |
3.61 |
27.3 |
0.45 |
| 5000 |
4.32 |
31.3 |
0.45 |
| 6300 |
5.24 |
35.0 |
0.45 |
| 8000 |
35-38.5 |
±2×2.5% |
3.15
3.3
6.3
6.6
10.5 |
YNd11 |
7.20 |
38.4 |
0.35 |
8.0% |
| 10000 |
8.70 |
45.3 |
0.35 |
| 12500 |
10.0 |
53.8 |
0.30 |
| 16000 |
12.1 |
65.8 |
0.30 |
| 20000 |
14.4 |
79.5 |
0.30 |
| 25000 |
17.0 |
94.0 |
0.25 |
10.0% |
| 31500 |
20.2 |
112 |
0.25 |
2000kVA-31500kVA three-phase double winding on load voltage regulating power transformer
|
rated capacity
(KVA)
|
Voltage combination and tap range |
Connection group label |
no-load loss
KW(9) |
load loss
KW(9) |
no-load current(%) |
short circuit impedance |
| high pressure(KV) |
Tapping range of high voltage |
low pressure(KV) |
| 2000 |
35 |
±3×2.5% |
6.3
10.5 |
Yd11 |
2.30 |
19.2 |
0.50 |
6.5% |
| 2500 |
2.72 |
20.6 |
0.50 |
| 3150 |
35-38.5 |
3.23 |
24.7 |
0.50 |
7.0% |
| 4000 |
3.87 |
29.1 |
0.50 |
| 5000 |
4.64 |
34.2 |
0.50 |
| 6300 |
5.63 |
36.7 |
0.50 |
| 8000 |
35-38.5 |
6.3
6.6
10.5 |
YNd11 |
7.87 |
40.6 |
0.40 |
8.0% |
| 10000 |
9.28 |
48.0 |
0.40 |
| 12500 |
10.9 |
56.8 |
0.35 |
| 16000 |
13.1 |
70.3 |
0.35 |
| 20000 |
15.5 |
82.7 |
0.30 |
| 25000 |
18.3 |
97.8 |
0.30 |
10.0% |
| 31500 |
21.8 |
116 |
0.3 |
1. According to user requirements, products beyond the capacity listed in the table can be produced, and their performance parameters depend on the requirements.
2. We can provide specially designed products based on different operating environments.
3. Medium voltage can choose different voltage values from the table or set up taps, while high voltage taps can choose asymmetric voltage regulation taps.
4. The short-circuit impedance can be selected to be different from the values in the table.
5. The final dimensions shall be confirmed based on the drawings after the contract is signed.
1. On load voltage regulation capability
Continuous and Stable Adjustment: The 35KV on load voltage regulating power transformer can achieve continuous and stable voltage adjustment through manual or automatic means without power outage. This ability enables transformers to adapt to frequent voltage fluctuations in the power system and maintain voltage stability.
Large voltage regulation range: Within the normal tapping range, this type of transformer usually has a large voltage regulation range, generally ± 10% of the rated voltage, and can be designed up to a maximum of no more than 20%. In addition, there are many voltage regulation levels, usually nine levels, which can be designed according to user requirements.
2. Improve the economic benefits of the power grid
Optimizing reactive power: By using vacuum on load regulating switches, tap voltage switching can be completed during load operation, maintaining the power grid at a high voltage level, optimizing reactive power distribution, reducing line losses, and thus improving the economic benefits of the power grid.
3. Ensure the quality of voltage and power supply
Reactive power zoning balance: On the premise of achieving on-site balancing of reactive power zoning, cooperate with the switching of reactive power compensation equipment (such as parallel capacitors and low-voltage reactors), adjust the tap changer, and ensure the quality of the power supply voltage to the user at all times.
4. Structural and material advantages
Sturdy frame structure: The high and low voltage clamps are tightened with steel straps or upper beams and measuring beams to form a sturdy frame structure, enhancing the clamping force of the iron core and the ability to withstand transportation impacts.
Excellent insulation and heat dissipation performance: Using high-quality insulation materials and iron cores, it has stable performance and excellent insulation performance. The longitudinal oil passage of the high and low voltage coils is beneficial for heat dissipation, which can significantly reduce the temperature difference between the oil and the hot spot temperature rise inside the coils.
5. Low loss and low noise
Low loss: Through optimized design and advanced technology, this type of transformer has lower losses during operation.
Low noise: reliable operation, low noise, reaching the advanced level of similar foreign products.
6. Customization and Scalability
Customized services: Customized designs can be made according to the specific needs of users, such as adding over temperature protection devices, selecting power supply time controllers, remote control devices, etc.
Parallel operation capability: If parallel operation is required, a synchronous controller must be configured, and the number of parallel operation units cannot exceed 4.
7. Wide range of application areas
Versatile applications: 35KV on load tap changer power transformers are widely used in power systems of cities, industrial and mining enterprises, and large power plants, as well as in high-rise buildings, commercial centers, tunnels, mines, stations, airports, petrochemicals, and other places.
FAQ
1. Are you a trading company or manufacturer ?
We are a professional factory with 10 years experience in the field of High and Low voltage switchgears,Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.
Our factory is the excellent supplier of State Grid Corporation of China.
2. Do you accept customized serveice ?
We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters.
3. What is your MOQ?
Our MOQ is 1 piece.
4. How long is your delivery lead time ?
It depends on your product requirement and quantity . Generally , 5~10 working days is available
5. How do you solve quality problems?
Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make a satisfied soluton within 2 days .
6. What is your payment terms ?
30%T/T in adcvance,70% before shipment . West union , L/C are also acceptable .
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