Professional dry type transformers are essential components in electrical systems, particularly in environments where safety and reliability are paramount. Unlike oil-filled transformers, dry type transformers utilize air as a cooling medium, reducing the risk of fire hazards associated with flammable oils. They are commonly used in commercial and industrial applications, including data centers, hospitals, and high-rise buildings, where space is limited and environmental concerns are significant.
Type
Rated capacity （KVA）
Voltage combination（KV）
No-load losses（W）
Load losses（W）
No-load current (%)
Short-circuit impedance (%)
S11-630
630
33,35/6.3,6.6,10.5,11
830
7870
1.10
6.5
S11-800
800
33,35/6.3,6.6,10.5,11
980
9410
1.00
6.5
S11-1000
1000
33,35/6.3,6.6,10.5,11
1150
11540
1.00
6.5
S11-1250
1250
33,35/6.3,6.6,10.5,11
1410
13940
0.90
6.5
S11-1600
1600
33,35/6.3,6.6,10.5,11
1700
16670
0.80
6.5
S11-2000
2000
33,35/6.3,6.6,10.5,11
2180
18380
0.70
6.5
S11-2500
2500
33,35/6.3,6.6,10.5,11
2560
19670
0.60
6.5
S11-3150
3150
33,35/6.3,6.6,10.5,11
3040
23090
0.56
7.0
S11-4000
4000
33,35/6.3,6.6,10.5,11
3620
27360
0.56
7.0
S11-5000
5000
33,35/6.3,6.6,10.5,11
4320
31380
0.48
7.0
S11-6300
6300
33,35/6.3,6.6,10.5,11
5250
35060
0.48
7.5
S11-8000
8000
33,35/6.3,6.6,10.5,11
7200
38500
0.42
7.5
S11-10000
10000
33,35/6.3,6.6,10.5,11
8700
45300
0.42
7.5
S11-12500
12500
33,35/6.3,6.6,10.5,11
10080
53900
0.40
8.0
S11-16000
16000
33,35/6.3,6.6,10.5,11
12160
65800
0.40
8.0
S11-20000
20000
33,35/6.3,6.6,10.5,11
14400
79500
0.40
8.0
S11-25000
25000
33,35/6.3,6.6,10.5,11
17020
94100
0.32
8.0
S11-31500
31500
33,35/6.3,6.6,10.5,11
20220
112900
0.32
8.0
These transformers are designed to operate efficiently under various load conditions. Their construction generally includes an insulated winding system that minimizes energy losses and enhances performance. Additionally, dry type transformers require minimal maintenance, making them a cost-effective choice for long-term operations. Their versatility allows them to be installed in both indoor and outdoor settings, often featuring weather-resistant enclosures when deployed outside.
The Role of Oil-Filled Transformers
Oil-filled transformers, on the other hand, have been a staple in electrical engineering for decades. These transformers use oil not only for insulation but also for cooling, allowing them to handle higher power levels effectively. The transformer oil provides excellent dielectric properties and helps maintain optimal operating temperatures, which is crucial for minimizing thermal stress on the windings.
While oil-filled transformers can be more efficient in certain high-power applications, they come with additional considerations such as regular maintenance checks for oil leaks and environmental risks. The presence of oil necessitates adherence to strict regulations regarding spill containment and remediation. However, their design allows for greater power capacity and longevity, making them suitable for utility-scale applications.
50 or 60 Hz Transformer Specifications
Transformers operating at either 50 Hz or 60 Hz are critical for aligning with regional electrical standards. The frequency determines the design and performance characteristics of the transformer, influencing aspects like size, weight, and efficiency. In regions utilizing 50 Hz, such as Europe and Asia, the transformers are engineered for slightly different specifications compared to those operating at 60 Hz, commonly found in North America. It’s essential for engineers and technicians to select the appropriate transformer based on the operational frequency to ensure optimal performance and compliance with local grid requirements. This selection process involves assessing load demands, installation environment, and compatibility with existing electrical infrastructure. Ultimately, the choice between 50 Hz and 60 Hz transformers can significantly impact the efficiency of the overall power distribution system.
Oil-filled transformers, on the other hand, have been a staple in electrical engineering for decades. These transformers use oil not only for insulation but also for cooling, allowing them to handle higher power levels effectively. The transformer oil provides excellent dielectric properties and helps maintain optimal operating temperatures, which is crucial for minimizing thermal stress on the windings.