All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(11 products available)
Bushing type transformers are increasingly applied in different settings. They allow for efficient voltage regulation and seamless insulation and incorporation into various power distribution systems.
Here's a look at the common types of this transformer:
Oil-Insulated Bushing Transformers
These are common in high-voltage applications. The oil provides insulation. It also helps in reducing the transformer's operational temperature. In these transformers, the windings are typically made from copper or aluminum. They are immersed in mineral oil to improve insulation. The bushing of this transformer transfers energy between circuits while maintaining insulation. This makes the transformer operate efficiently, even at elevated voltage levels. The user regularly monitors the oil's condition to ensure the system's continued safety and efficiency.
Resin-Insulated Bushing Transformers
These use epoxy or other resin materials as insulation. The resin provides a solid, non-fluid insulation system that is less prone to degradation over time. Hence, it's ideal in environments with frequent fluctuations. Also, in resin-insulated varieties, the bushing's design varies according to need. Some resin-insulated models will sport a cylindrical form most suited for compact applications. Often, these transformers are smaller in size. This gives them added portability while still delivering reliable performance.
PorcelainInsulated Bushings
In these transformers, the bushing's insulation is made using porcelain material. Since porcelain is mechanically robust and highly resistant to environmental conditions, it's regularly used in outdoor settings. Common features of these transformers are their durability and ability to withstand adverse weather conditions. The bushing therefore effectively combines insulation with a sturdy support structure. This allows for continuous transformer operation in outdoor environments.
Air-Insulated Bushings
These are also referred to as "live bushings." They are often used in low-voltage applications. Their main role is to provide an insulation and support medium for electrical conductors. The bushing's air insulation is inexpensive and easy to apply, making it an attractive option in specific uses. Unfortunately, they are not as commonly used in high-voltage settings as other types. This is due to the air's lower insulating capability compared to oil or solid insulation materials.
Silicone Rubber Insulated Bushings
Silicone rubber is growing in popularity as an insulation material. This is especially in areas that are prone to pollution or adverse weather. Its resistance to UV radiation, and extreme temperatures make it ideal in harsh environments. Further, silicone rubber has excellent hydrophobic properties. These properties help in reducing partial discharge and improving the bushing's lifespan. This is particularly beneficial for transformers in heavily polluted or humid areas that experience frequent field strength.
Every bushing type transformer has its own specific requirements. One's knowledge on the often-overlooked essentials can go a long way in influencing the transformer's longevity, efficiency, and overall performance.
This is for the oil-insulated variety. In this type of transformer, oil is critical for both insulation and cooling. That's why it's important to use high-quality mineral oil with proper dielectric strength and moisture content. It's also key to ensure the oil is periodically tested and filtered to remove impurities. These are contaminants that can degrade the oil's insulating properties.
Naturally, many transformer types require cooling mechanisms. Most common ones include radiator coolers, oil pumps, and coolers. They help ensure that the transformer maintains optimal operating temperature even under heavy load. However, the cooling system must be appropriate for the transformer's size and environment. This is because failure of the cooling system will lead to overheating. This in turn causes damage to the transformer and other associated components.
For instance, in resin or silicone rubber-insulated transformers, the insulating materials degrade over time. This goes on to depend on environmental conditions and the operational temperature. Fortunately, regular inspection and replacement of damaged or worn-out insulation go a long way in maintaining the transformer's performance.
These are integrated into many transformer systems to enhance protection. For instance, surge and circuit breakers will quickly isolate the transformer from the power grid during fault conditions. This reduces damage. That said, one should ensure the breakers are regularly tested. They need to be replaced promptly to avoid situations where they fail to protect the transformer during electrical anomalies.
Common examples of these devices are power analyzers and harmonic distortion meters. They are effective in the early targeting of power quality issues such as voltage sags, transients, and excessive harmonic distortion. These are the commonly anticipated power quality issues. By monitoring the transformer's input and output power quality, power quality monitoring devices help in offering insights. These insights can inform users of the necessary actions required to mitigate power-related problems.
These are frequently added to bushing type transformers to guard them against overvoltage. Their role on surge arresters is to divert excess voltage and then safely dissipate it. This protects the transformer and its associated equipment from damage. Furthermore, using the right arrester for the application's voltage level and environmental condition ensures it effectively protects the transformer.
Transformers with oil or resin insulation have venting systems. The systems help in relieving pressure built up inside the transformer due to differences in temperature or gas generation. A good example of such a system are pressure relief valves and vents. They ensure safe operation by preventing dangerous pressure levels. Unfortunately, failure of a vent or valve will lead to dangerous pressure buildup that results in explosion or even fire. Regular inspection and prompt repair help in preventing these dangerous scenarios.
A bushing transformer has quite diverse applications across varied industries. Its versatility and effectiveness at specific voltage transformation and insulation roles have made it essential in contemporary electrical systems.
Bushing transformer play a critical role in utility power distribution. They are often integrated into substations, allowing voltage adjustment for power transmission. High-voltage electricity gets transformed to lower voltage levels for easier distribution to residential, commercial, and industrial users. Without these transformers, the electricity would be dangerous for use. That's why every user is always obligated to keep their transformers in good working condition. They do this by regularly servicing them.
These transformers are also found in industrial environments. They provide the right voltage levels for machinery, equipment, and processes. Common-in industries like manufacturing and mining. In these industries, high voltage needs to be transformed to more manageable levels for machinery use. At this voltage level, employees can work safely and efficiently, and the equipment can run optimally.
As the world transitions to greener energy solutions, bushing type transformers have found their way into renewable energy systems. For instance, in wind and solar farms, these transformers help in adjusting the generated power voltage to match grid standards. This ensures seamless electricity integration into existing power grids. These transformers will also help in enhancing the system's overall reliability and efficiency.
Railways and other electric-powered transit systems depend on bushing transformers for their operations. Here, the transformers get installed into trackside or station infrastructure. They then help in powering signaling systems, trains, and other station operations. In these applications, the transformers must be compact and durable since they have to operate under continuous exposure to the elements.
Users install bushing type transformers in data centers to ensure the servers and networking equipment receive a consistent, stable voltage level. In these settings, voltage fluctuations can result in equipment damage and data loss. This is why the transformers commonly come with advanced insulation and cooling mechanisms. They help in handling the heavy electrical loads while also maintaining optimal safety and easy access for maintenance.
Manufacturers of electrical equipment use bushing transformers in their production facilities. After all, it is bushing transformers that provide the right voltage levels for their various testing and production processes. Also, these transformers help in ensuring the equipment being produced will operate reliably across diverse electrical systems.
Selecting the ideal bushing type transformer requires buyers to consider several key factors. They each impact the transformer's performance, efficiency, and longevity.
Transformer Bushing
A buyer's choice of transformer bushing can impact the transformer performance. For instance, porous bushings excel in heavy-duty applications. These include steel production. This is because they have a higher mechanical resistance. On the other hand, anti-porous bushings have a smoother surface. This makes them ideal for less rigorous applications.
Maintenance Requirements
Different transformer types have different maintenance needs. Old oil-insulated transformers, for instance, need regular oil testing and filtration. Fortunately, maintenance-free alternatives like resin-insulated transformers do exist. They have been developed to reduce the overall maintenance burden.
Cooling Options
Buyers normally consider the cooling mechanisms of their transformer. They need to go for one that's compatible with their operating environment. For example, oil circulation coolers are most suited for those used in heavy industrial environments. Those that experience heat loads or high temperatures, go for air-cooled transformers. They are suited for environments that have lower heat loads.
Load Capacity
Every buyer should ensure their transformer has the capacity to handle the expected electrical load in their environment. Given that overloading a transformer leads to serious consequences. These include reduced efficiency, overheating, and even system failure. At this point, considering factors like transient response, peak load, and operating time helps ensure the transformer is adequately sized for the application.
Electrical Characteristics
Buyers need to consider the transformer's voltage ratings, power factor, and impedance.Most importantly, these electrical characteristics should align with the requirements of the electrical system they will be integrated into. For instance, the voltage rating must be in the same range as that of the electrical system. Going for one with incompatible electrical characteristics results in poor performance, higher maintenance costs, and even unsafe operating conditions.
Insulation Bushing
Most modern transformers have bushing insulations that use varied materials. These materials include porcelain, silicone rubber, and resin. Every one of these insulating materials has unique benefits. For example, silicone rubber has superior resistance to environmental stressors. Resin, on the other hand, degrades more easily over time. In this case, buyers need to consider the insulation materials that will best suit their operating environment.
Installation Requirements
Buyers should consider the installation needs of their transformer. For instance, installation requirements for outdoor and indoor transformers usually differ. Outdoor ones should have weatherproof housings and support structures like concrete pads. Meanwhile, indoor transformers should be easily accessible for maintenance purposes.
A1. Homes and small businesses that mainly use electrical devices that require lower voltage, after all, this transformer is ideal for such settings. It is commonly used in these spaces during voltage regulation. This makes it a common feature in residential power distribution.
A2.Oil-immersed types usually have two kinds of ventilation. The natural one that allows air to flow through without mechanical assistance. Then there’s forced ventilation. This one utilizes fans to ensure air circulates more effectively through the transformer.
A3. To start, the oil acts as both coolant and insulator. After all, it helps dissipate heat generated within the transformer. It also helps keep the various components safely separated from each other. This prevents electrical breakdowns. In fact, the breakdown or contamination of this oil results in the transformer's failure.
A4. A transformer’s power factor depicts how effectively it uses electrical power. An ideal transformer will always have a high power factor. Unfortunately, low-power factors are the norm for aging or overloaded transformers. The good news is that this is a problem that’s easy to spot. After all, it impacts the transformer's efficiency directly.
