Types of Transformers: Dry Type vs Liquid Filled

Transformers play a crucial role in electrical systems, particularly in the medium voltage range. Among the various types of transformers, dry type and liquid filled transformers are two prominent categories. Dry type transformers are known for their insulation using air or solid materials, making them ideal for indoor applications. These transformers are less prone to environmental hazards, which is why they are often used in commercial buildings and industrial facilities.

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On the other hand, liquid filled transformers utilize oil as an insulating and cooling medium. This design allows for higher efficiency in energy transfer and is often preferred in larger installations. Liquid filled transformers can handle greater loads and are more robust in terms of thermal performance. The choice between these two types typically depends on the specific requirements of the project, including the location, load demands, and fire safety regulations.

Medium Voltage Transformers in China

China has emerged as a significant player in the manufacturing of medium voltage transformers. With a growing demand for reliable electrical infrastructure, Chinese enterprises have invested heavily in technology and innovation to produce high-quality transformers. Companies specializing in this field are often recognized globally for their expertise and advanced manufacturing processes, contributing to the nation’s reputation in the electrical equipment sector.

TypeRated capacity (KVA)Voltage combination(KV)No-load losses(W)Load losses(W)No-load current (%)Short-circuit impedance (%)
S11-63063033,35/6.3,6.6,10.5,1183078701.106.5
S11-80080033,35/6.3,6.6,10.5,1198094101.006.5
S11-1000100033,35/6.3,6.6,10.5,111150115401.006.5
S11-1250125033,35/6.3,6.6,10.5,111410139400.906.5
S11-1600160033,35/6.3,6.6,10.5,111700166700.806.5
S11-2000200033,35/6.3,6.6,10.5,112180183800.706.5
S11-2500250033,35/6.3,6.6,10.5,112560196700.606.5
S11-3150315033,35/6.3,6.6,10.5,113040230900.567.0
S11-4000400033,35/6.3,6.6,10.5,113620273600.567.0
S11-5000500033,35/6.3,6.6,10.5,114320313800.487.0
S11-6300630033,35/6.3,6.6,10.5,115250350600.487.5
S11-8000800033,35/6.3,6.6,10.5,117200385000.427.5
S11-100001000033,35/6.3,6.6,10.5,118700453000.427.5
S11-125001250033,35/6.3,6.6,10.5,1110080539000.408.0
S11-160001600033,35/6.3,6.6,10.5,1112160658000.408.0
S11-200002000033,35/6.3,6.6,10.5,1114400795000.408.0
S11-250002500033,35/6.3,6.6,10.5,1117020941000.328.0
S11-315003150033,35/6.3,6.6,10.5,11202201129000.328.0
SC(B)11Rated capacity (KVA)Voltage combination(KV)No-load losses(W)Load losses(W)No-load current (%)Short-circuit impedance (%)
SC11-30306,6.3,6.6,10,11/0.41807102.44.0
SC11-50506,6.3,6.6,10,11/0.425010002.44.0
SC11-80806,6.3,6.6,10,11/0.434013801.84.0
SC11-1001006,6.3,6.6,10,11/0.436015701.84.0
SC11-1251256,6.3,6.6,10,11/0.442018501.64.0
SCB11-1601606,6.3,6.6,10,11/0.449021301.64.0
SCB11-2002006,6.3,6.6,10,11/0.456025301.44.0
SCB11-2502506,6.3,6.6,10,11/0.465027601.44.0
SCB11-3153156,6.3,6.6,10,11/0.479034701.24.0
SCB11-4004006,6.3,6.6,10,11/0.488039901.24.0
SCB11-5005006,6.3,6.6,10,11/0.4105048801.24.0
SCB11-6306306,6.3,6.6,10,11/0.4121058801.04.0
SCB11-6306306,6.3,6.6,10,11/0.4117059601.06.0
SCB11-8008006,6.3,6.6,10,11/0.4137069601.06.0
SCB11-100010006,6.3,6.6,10,11/0.4159081301.06.0
SCB11-125012506,6.3,6.6,10,11/0.4188096901.06.0
SCB11-160016006,6.3,6.6,10,11/0.42210117301.06.0
SCB11-200020006,6.3,6.6,10,11/0.42720144500.86.0
SCB11-250025006,6.3,6.6,10,11/0.43200171700.86.0

Among the well-known Chinese manufacturers, several have established themselves as specialists in medium voltage transformer production. They leverage cutting-edge technology and rigorous testing protocols to ensure that their products meet international standards. This commitment to quality has made them favorites not just in domestic markets but also in international exports, where they compete effectively against established players from around the world.

The Importance of Videos in Transformer Education

In today’s digital age, videos have become an essential tool for educating professionals about transformers, including both dry type and liquid filled variants. Many companies and educational institutions in China have embraced this medium to provide detailed insights into transformer technologies. These videos often cover installation processes, maintenance tips, and troubleshooting techniques, making complex information more accessible to engineers and technicians.

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Additionally, video content allows for visual demonstrations of how medium voltage transformers operate under different conditions. This can be incredibly beneficial for training purposes, as it offers a practical understanding that theoretical learning sometimes lacks. As more enterprises continue to produce high-quality video content, the electrical engineering community is becoming better equipped to handle the challenges associated with transformer technology and its applications.