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Insulation Fitting Series

Your Professional Insulation Fitting Series Supplier
 

Hangzhou Weshare Import & Export Co.,Ltd. is a leading Chinese manufacturer and exporter of transformer components, electrical insulation materials and consulting company. Weshare founded in 2005 by one specialized sales in transformer accessories. Most of our products are used in oil and dry transformers, electrical motors, generators and electronic products.Our mission is to ensure appropriate product quality while satisfying the needs of our customers is our prime objective and represents the core principle of our business activities.

 

 
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Why Choose Us

Quality Assurance

Certified by UL, SGS, and ISO9001, Weshare upholds stringent quality standards.

Extensive Experience

Weshare, since 2005, excels in transformer accessories and electrical engineering.

Export markets

With a strong focus on export markets, we have successfully captured significant market share in East Asia, North Europe, the Middle East, South America, Egypt, and East Africa. Our dedication to ensuring appropriate product quality while meeting customer needs is the cornerstone of our business philosophy.

Product Application

Our company boasts a wide array of products used in oil and dry transformers, electrical motors, generators, and electronic devices.

 

 

 

Product Description

 

Product Name

Customized Copper /alloy Casting and Machining Parts.

Production Range

Casting: Investment/Presicion Casting/ Lost Wax Casting, sand casting, precoated sand casting.

Machining: CNC Machining/ Lathing/ Milling/ Turning/ Drilling/ Tapping/ Broaching etc.

Material

Copper & alloy

Brass: HPb59-1, CuZn39Pb1/2/3, CuZn40, C36000, C37000,C37710, C67400, C46400etc.

Aluminum Bronze: CuAl10Fe2/3, CuAl10Ni5Fe5, C65500,C95200,C95400, C95600, C87500, etc.

Tin Bronze: CuPb5Sn5Zn5, C83600,C83800, C84400, C86500. etc.

Surface treatment

Sand blasting, Shot blasting, Polishing, Grinding, Annealing, Tempering, Polishing.

Tolerance

0.01-0.2mm

Process

Casting, Deburring, Machining, Surface Treatment, Packing.

Weight range

0.2--1500KG( Max. unit weight)

Technical Process

Investment casting, Precision casting, Lost wax casting, sand casting.

Surface treatment

Painting, polishing, heat treatment, plaining, galvanization, shot blasting.

Chromate plating, power coated and anodizing.

Machining

CNC Machining Center, Boring Machine, Milling Machine, Lathe, And Radial Drilling Machine.

Size and design

As the customer's drawings and requirements.

Samplese accepted.

The mold from customer is acceptable.

 

Advantages of Bushing Flag For Transformer
 

Excellent Conductivity

Brass has good electrical conductivity (second only to copper), ensuring efficient and low-loss current passage through connection points, reducing energy loss and heat generation issues.

High Mechanical Strength, Reliable Connection

Brass has good strength and toughness, and can maintain stable mechanical connections in high-pressure environments, not easily breaking or loosening. It is especially suitable for overhead lines with large tension.

Strong Corrosion Resistance

Brass has excellent anti-oxidation, anti-moisture, and anti-industrial corrosion capabilities, making it particularly suitable for use in rain, snow, seaside, acid rain, or heavy pollution environments.

Good High-Temperature Resistance

It has a wide working temperature range, not easily softening, annealing, or failing due to high temperatures. Suitable for insulator connection parts exposed to strong sunlight or high-load conditions.

Easy to Process and Install

Brass is easy to cut, drill, and thread. It can be made into various forms of terminal connectors (such as bolt-type, crimp-type, wedge-type, etc.), facilitating quick on-site assembly.

Stable Electrical Contact

Under long-term use, the contact resistance is low and stable, not easily causing poor contact due to contact surface oxidation, improving the reliability of the power supply system.

 

Transformer Bushing For Terminal Brass Flag

 

Key Parts of a Bushing Flag For Transformer

The Central Conductor
This is the part that carries the electricity. It’s usually made of highly conductive metals like copper or aluminum to ensure the electricity flows smoothly.

 

Insulating Layers
One of the key functions of a transformer bushing is to manage the immense stress caused by handling high-voltage electricity. Over time, this stress can wear down the bushing's materials, potentially leading to overheating or even failure. To address this challenge, modern bushing designs incorporate stress-control layers or rely on materials with high thermal resistance and low electrical loss.

 

Outer Casing
The outside of the bushing is often made from durable materials like porcelain or polymer. This casing protects the internal parts from weather, dirt, and mechanical damage.

 

Mounting Hardware
This includes the flanges or fittings that attach the bushing to the transformer. These parts need to be strong enough to handle the weight of the bushing and withstand vibrations.

 

Cooling Features
In some bushings, especially those used in high-voltage systems, cooling materials like oil or gas are added to keep the bushing from overheating. These features improve efficiency and extend the life of the bushing.

 

Considerations Hour Choosing The Bushing Flag For Transformer

 

 

Voltage Requirements - The voltage rating has to match the job. Utilities working with transmission and distribution lines typically need bushings built for high-voltage use.

 

Environmental Conditions - If the transformer sits outdoors, the bushing needs to handle weather extremes, moisture, and pollution. In contrast, indoor transformers may allow for a more compact design, but still need durability—especially in industrial environments with heat or dust.

 

Material and Design Choices - Porcelain bushings are rugged and reliable but heavy and more fragile in impact scenarios. Polymer bushings are lighter and often preferred where weight, flexibility, or resistance to chipping is a concern.

 

Ease of Maintenance - Some bushings are easier to inspect, clean, or replace than others. If you’re working in a setting where downtime is costly, opting for a bushing that’s service-friendly can save money and hassle over time.

 

Compliance With Standards- Although transformer bushings typically make up only 5-8% of a transformer’s total cost, their failure can lead to catastrophic consequences, both financially and in terms of safety. To mitigate risks, you need to make sure your bushings meet all relevant industry standards and regulations.

 

Logistic

 

productcate-899-265

 

FAQ

 

 

Q: What is the purpose of the bushings on a transformer?

A: Insulation: Bushings serve as insulation for the electrical components of transformers. They isolate high-voltage windings (e.g., the high-voltage side) from ground or low-voltage windings, preventing electrical shock and arc faults and ensuring the safety and reliability of electrical power transmission.

Q: What is the purpose of the bushings in a substation?

A: Bushings provide a safe way to bring electrical connections out of the transformer without shorting the circuit or causing electrical faults. They are designed to handle high voltages and currents, while also preventing any potential dielectric breakdown between the conductor and the transformer tank.

Q: What do bushings do on a transformer?

A: A transformer bushing is an insulating structure that facilitates the passage of an energized, current-carrying conductor through the grounded tank of the transformer.

Q: How do you maintain transformer bushings?

A: Once every 3 to 5 years, perform a close physical inspection and cleaning of the bushings [10]. Check carefully for leaks, cracks, and carbon tracking. This inspection will be required more often in atmospheres where salts and dust deposits appear on the bushings.

Q: What is the principle of bushing in transformer?

A: The transformer bushing acts like a protective tube, surrounding the electrical conductor (materials, such as copper or aluminum, that allow electricity to flow easily due to their low resistance) with layers of insulation to keep the high-voltage current safe and contained.

As one of the leading insulation fitting series suppliers in China, we warmly welcome you to wholesale high-grade insulation fitting series made in China here from our factory. All our products are with high quality and competitive price.

rigid insulation sleeve, electrical insulation paper, green insulation paper