Transformer Bushings

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Transformer Bushings Specification

Product Type
Transformer Bushing

Material
Porcelain / Metal Flange

Capacity
As per Application

Application
Power and Distribution Transformers

Out Coating
Porcelain Glaze

Standard
IS 2099 / IEC 60137

Shape
Cylindrical

Surface Treatment
Smooth Glazed Finish

Height
250 mm to 800 mm (Varies with Rating)

Voltage
11 kV / 22 kV / 33 kV

Design
Ribbed / Plain

Thickness
7-12 mm (Porcelain Wall)

Color
Brown / Grey

Operating Temperature
-25°C to +90°C

Creepage Distance
300 mm to 1050 mm

Insulation Level
Class A (Porcelain)

Weather Resistance
High

Mounting Type
Flange Mounted

Rated Current
250 A to 2000 A

Oil End Connection
Threaded / Plug-in Type

Arcing Horns
Provided (Optional)

Test Voltage
Up to 70 kV Power Frequency

Conductor Material
Copper / Aluminium

About Transformer Bushings

Our organization has secured a distinguished position in the market as a reputed manufacturer, exporter and supplier of high quality Distribution Transformer that is hugely demanded in several electrical applications. This transformer is manufactured using premium quality components and modern technology as per the set industry standards. Offered product is presented in various technical specifications to meet the diverse needs of the clients. We are offering this Distribution Transformer at affordable costs.

Features:

High performance
High strength
Long working life
Compact design

These are intermediate components which help in connecting the overhead cables to the transformer windings. We manufacture metal parts with with voltage ratings upto 72kv and 10000 Amperes.

Exceptional Durability and Weather Resistance

Crafted from Class A porcelain with a smooth glazed finish, these transformer bushings provide excellent durability and performance, even under severe environmental conditions. Their robust porcelain wall (7-12 mm) and high-grade weather resistance minimize the risk of degradation, ensuring longevity and continuous operation. The porcelain glaze finish not only enhances durability but also meets international standards for safety and strength.

Flexible Installation and Application

The flange mounting system, combined with variable height (250 mm to 800 mm) and compatibility with threaded or plug-in oil end connections, allows for seamless integration in both power and distribution transformers. Available in brown or grey, and supporting copper or aluminium conductors, these bushings are designed for diverse applications in substations and transformer units. Optional arcing horns provide added protection in high-stress scenarios.

FAQs of Transformer Bushings:

Q: How are the transformer bushings installed and what mounting options are available?

A: These transformer bushings are designed for flange mounting, providing a secure and straightforward installation into transformer tanks. The flange-mounted system facilitates easy and reliable integration, supporting both ribbed and plain designs to meet a variety of operational needs.

Q: What is the function of creepage distance in these bushings?

A: Creepage distance, ranging from 300 mm to 1050 mm in these bushings, refers to the shortest path along the insulating surface between two conductive parts. This distance is crucial for preventing surface electrical breakdown and ensuring safe operation under high-voltage and contaminated environments.

Q: When are optional arcing horns recommended for use with these bushings?

A: Arcing horns are suggested in installations where overvoltage or transient events may occur, such as outdoor or high-stress environments. They help divert and control electrical arcs, protecting the main bushing from damage and prolonging its service life.

Q: Where can these bushings be effectively used?

A: These bushings are suitable for power and distribution transformer applications in utility substations, industrial plants, renewable energy setups, and various electrical distribution systems, especially where high weather resistance and safe insulation are required.

Q: What materials are used in the conductor and the bushing body?

A: The conductors are manufactured from either copper or aluminium, offering optimal conductivity and mechanical strength. The bushing body is made of Class A porcelain with a glazed finish, combined with a robust metal flange for mounting, ensuring mechanical stability and electrical insulation.

Q: How does the oil end connection process work?

A: The bushings can be connected on the oil side by either threaded or plug-in type terminations, allowing flexible compatibility with different transformer designs and facilitating secure, leak-proof sealing during installation.

Q: What are the primary benefits of using these bushings in transformer systems?

A: Key benefits include high electrical insulation, excellent weather resistance, robust mechanical strength, compliance with IS 2099 and IEC 60137 standards, and reliable performance up to 70 kV power frequency. Their design also ensures long service life and reduced maintenance needs in demanding electrical environments.

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