Encapsulated dry type transformers are essential components in modern electrical systems, providing reliable voltage transformation while ensuring safety and efficiency. These transformers are encapsulated in a resin material, which protects the winding from environmental factors such as moisture and dust. This feature makes them ideal for use in indoor applications, where they can operate without the risk of oil spills or contamination. One of the main advantages of encapsulated dry type transformers is their reduced footprint and weight compared to traditional oil-filled transformers. The encapsulation process allows for compact designs that can fit into constrained spaces, making them suitable for urban installations and facilities with limited room for large equipment.
Aluminum Windings in Transformers
Aluminum windings have gained popularity in encapsulated dry type transformers due to their lightweight and cost-effective characteristics. While copper has traditionally been the preferred choice for transformer windings, aluminum offers a compelling alternative with a lower initial cost and sufficient conductivity for many applications.
Furthermore, aluminum windings contribute to improved thermal performance. They dissipate heat effectively, which is crucial for maintaining operational efficiency and prolonging the lifespan of the transformer. With advancements in manufacturing techniques, modern aluminum windings can achieve performance levels comparable to those of copper, making them a viable choice for many manufacturers.
China as a Leading Manufacturer
China has established itself as a leading manufacturer of encapsulated dry type transformers with aluminum windings. The country’s extensive industrial base and advanced technology enable manufacturers to produce high-quality transformers that meet international standards. Many Chinese companies invest significantly in research and development to improve transformer design and efficiency continually.
Type
Rated capacity (KVA)
Voltage combination(KV)
No-load losses(W)
Load losses(W)
No-load current (%)
Short-circuit impedance (%)
SC13-30
30
6,6.3,6.6,10,11/0.4
150
710
2.3
4.0
SC13-50
50
6,6.3,6.6,10,11/0.4
215
1000
2.2
4.0
SC13-80
80
6,6.3,6.6,10,11/0.4
295
1380
1.7
4.0
SC13-100
100
6,6.3,6.6,10,11/0.4
320
1570
1.7
4.0
SC13-125
125
6,6.3,6.6,10,11/0.4
375
1850
1.5
4.0
SCB13-160
160
6,6.3,6.6,10,11/0.4
430
2130
1.5
4.0
SCB13-200
200
6,6.3,6.6,10,11/0.4
495
2530
1.3
4.0
SCB13-250
250
6,6.3,6.6,10,11/0.4
575
2760
1.3
4.0
SCB13-315
315
6,6.3,6.6,10,11/0.4
705
3470
1.1
4.0
SCB13-400
400
6,6.3,6.6,10,11/0.4
785
3990
1.1
4.0
SCB13-500
500
6,6.3,6.6,10,11/0.4
930
4880
1.1
4.0
SCB13-630
630
6,6.3,6.6,10,11/0.4
1070
5880
0.9
4.0
SCB13-630
630
6,6.3,6.6,10,11/0.4
1040
5960
0.9
6.0
SCB13-800
800
6,6.3,6.6,10,11/0.4
1210
6960
0.9
6.0
SCB13-1000
1000
6,6.3,6.6,10,11/0.4
1410
8130
0.9
6.0
SCB13-1250
1250
6,6.3,6.6,10,11/0.4
1670
9690
0.9
6.0
SCB13-1600
1600
6,6.3,6.6,10,11/0.4
1960
11700
0.9
6.0
SCB13-2000
2000
6,6.3,6.6,10,11/0.4
2440
14400
0.7
6.0
SCB13-2500
2500
6,6.3,6.6,10,11/0.4
2880
17100
0.7
6.0
The competitive pricing of transformers produced in China also attracts global customers. By leveraging economies of scale and efficient production processes, Chinese manufacturers can offer their products at lower prices without compromising on quality. This combination of affordability and reliability makes Chinese encapsulated dry type transformers an attractive option for various industries worldwide.
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