The power industry is undergoing a revolution with the introduction of Hermetic Oil immersed transformers (HOITs). HOITs are a type of transformer that is completely sealed and filled with oil, providing superior insulation and protection from the environment. This technology has been around for decades, but recent advances in materials and manufacturing processes have made HOITs more reliable and cost-effective than ever before.
HOITs offer a number of advantages over traditional transformers. First, they are much more efficient, with losses of only 1-2% compared to 5-7% for traditional transformers. This means that more of the energy generated is converted into usable power, resulting in lower energy costs for consumers. Additionally, HOITs are much more reliable than traditional transformers, with a life expectancy of up to 30 years. This means that they require less maintenance and can be used in remote locations where traditional transformers would not be feasible.
HOITs also offer superior protection from environmental conditions. The oil-filled design provides superior insulation, which helps to protect the transformer from extreme temperatures, humidity, and other environmental factors. This makes them ideal for use in harsh climates, such as deserts or areas prone to flooding. Additionally, the oil-filled design helps to reduce noise pollution, making them suitable for use in residential areas.
Finally, HOITs are much more compact than traditional transformers, making them easier to install and transport. This makes them ideal for use in areas where space is limited, such as urban areas.
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
Overall, HOITs are revolutionizing the power industry by providing a more efficient, reliable, and cost-effective solution for transforming energy. With their superior insulation and protection from the environment, HOITs are ideal for use in a variety of applications, from residential areas to harsh climates. As the technology continues to improve, HOITs are sure to become even more popular in the power industry.
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Finally, HOITs are much more compact than traditional transformers, making them easier to install and transport. This makes them ideal for use in areas where space is limited, such as urban areas.
