High Current Bushings
Through customer-focused innovation, our avant-garde High Current Bushings have been engineered to provide a fine performance in Generation station transformer applications globally. Available in voltage classes from 24 kV to 52 kV with current ratings from 4000 A to 25000 A, our bushings are resilient to endure aggressive applications.
The range is fully type tested at ILAC-accredited test laboratories, and possess a high level of customization potential based on the customer s needs for dimensions and interchangeability. Drawings for specific models are available upon request
- Rated Voltage: 24 kV – 52 kV*
- Rated Current: 4000 A – 25000 A
- Standards: IEC-60137:2017 / IEEE C.57.19.00/01 / Other equivalent
- Types: Oil filled/Communicating/OIP Condenser
- Conductor: Aluminium / Copper
- Insulation: Oil-impregnated paper / Oil filled Hermetically sealed / Oil Communicating
- Application: Transformer – Outdoor
- Type: Oil to Air
*Special / higher voltage ratings available upon request.
All our standard models are type tested at ILAC/NABL Accredited laboratories as per IEC-60137 / IEEE C57.19.00/01. For any fresh type test requests, we request you to approach us on an individual basis and we can work out a techno-commercial solution suitable for you.
- Exact interchangeability with global reputed makes
- Robust solid rod construction with oil end termination integrally milled on conductor
- No joint on the conductor below the top cap level
- SS Helicoil inserts on oil end termination holes to enable direct bolting of transformer lead for Aluminium design bushings
- Manufacturing and field experience of more than 4000 Bushings up to 25kA
- Finely graded Capacitive insulation for optimum electrical field distribution
- Partial discharge free and low dissipation factor
- Excellent thermal performance
- High seismic and short circuit load withstand capacity
- Self-cleaning alternate shed profile according to IEC
- Viton material O-rings for oil sealing
- Provision of test tap for insulation health monitoring
- Highly customizable design in terms of mounting and terminal connection
- Provision for accommodating special CT pocket length requirements
- Suitable for Bus-duct operation
- Shortest lead time industry-wide
- High strength porcelain as per IEC 60815
- The Bushings comply with IEC 60137 standard s performance requirements for application in GSU power transformers, station transformer, unit auxiliary transformers & others
- The main component of Bushing for OIP Insulated Bushings is the Active part and is manufactured using insulating kraft paper wound around a solid conductor. OIP condenser core is standard from 36kV onwards but is available for a lower voltage upon request
- During paper winding, aluminium foils are embedded in the paper, co-axially at pre-calculated locations to optimise the radial and axial electrical field along the bushing
- After winding, the paper core is dried under vacuum at elevated temperatures and subsequently impregnated with high-quality vacuum dried and degassed Insulating mineral oil
- For Oil Insulated Bushings, the oil serves as major insulation
- The bushing is assembled in a controlled environment and filled under vacuum with vacuum dried and degassed Insulating Mineral oil
- After oil filling, each Bushing is subjected to oil overpressure test for verification of joint sealing
- The appropriate cushion is incorporated post pressure test on top of oil level to allow for expansion, and the space is purged with high purity Nitrogen before sealing
- All bushings are tested in accordance with IEC 60137
OIP Condenser Bushings
The most widely used bushings in the high voltage transmission industry globally even today, Oil Impregnated Paper (OIP) Condenser Bushings are manufactured using Kraft paper wound tightly on a conductor, with a finely graded capacitive arrangement using intermediate layers of aluminium foils, dried under heat and vacuum to remove moisture and carefully impregnated with processed transformer oil.
We engineer various product lines of OIP Condenser bushings with different voltage and current ratings and combinations of insulator options including porcelain or silicone.
All our standard models are type tested at ILAC/NABL Accredited laboratories as per IEC-60137/IEEE C57.19.00/01. For any fresh type test requests, we request you to approach us on individual basis and we can work out a techno-commercial solution suitable for you.
- Rated Voltage: 24 kV – 245 kV for IEC range OR 25 kV – 230 kV for IEEE range
- Rated Current: 400 A 3150 A*
- Insulation: Oil-impregnated paper Hermetically sealed
- Application: Transformer Outdoor
- Type: Oil to Air , Air to Air , Oil to Oil
- Insulator: Porcelain/ Hollow Composite – Silicone
- Standard: IEC 60137: 2017/ IEEE C57.19.00/01
- Connection: Draw lead/Draw Rod/Solid Conductor
*Customized Rated Current >3150A are available upon request
**Detailed drawings of our bushing variants are available upon request.
- Manufacturing and field experience of more than 12,000 Bushings
- Computer-aided finely graded Capacitive insulation for optimum electrical field distribution
- Partial discharge free and low dissipation factor attributable to stable long-term performance
- Shatter-proof oil end insulator
- High seismic and SC load withstand capacity
- Available with porcelain or composite insulator housing on air-side
- Excellent thermal performance
- Large size oil indicator for better visibility from distance and angles
- Viton material O-rings for oil sealing
- Special terminals available upon on request
- Potential for customization of BCT, oil end length, mounting flange to a large extent
- Exact interchangeability with global reputed makes
- Shortest lead times industry-wide
- VCL/VCD/VCS Bushings are High voltage capacitance graded oil-impregnated paper insulated bushings
- The Bushings comply with IEC 60137 standard s performance requirements for application in power transformers
- The main component of Bushing is the Active part and is manufactured using insulating kraft paper wound around a central tube or solid conductor
- During paper winding, aluminium foils are embedded in paper co-axially at pre-calculated locations to optimise the radial and axial electrical field along the bushing
- After winding, the paper core is dried under vacuum at elevated temperatures and subsequently impregnated with high-quality vacuum dried and degassed Insulating mineral oil
- The bushing is assembled in a controlled environment and filled under vacuum with vacuum dried and degassed Insulating Mineral oil
- After oil filling, each Bushing is subjected to an oil-filled over-pressure test for verification of joint sealing
- All bushings are routine tested and type tested in accordance with IEC 60137
OIP Wall Bushing/ Oil-to-Oil Bushings
Through customer-focused innovation, our avant-garde High Current Bushings have been engineered to provi
We offer an extensive range of OIP (Oil impregnated Paper) bushings also for the wall through applications as well as Oil-Oil applications inside transformer cable box. Considerable customization is available based on the customer s needs for these products, and we continue to supply these specialized solutions to many customers in India and globally.
- Rated Voltage 24 kV- 245 kV for IEC range OR 25 kV – 161 kV for IEEE range
- Rated Current 400 A 3150 A*
- Insulation: Oil-impregnated paper Hermetically sealed
- Application: Transformer Cable box/ Wall through (Outdoor-Indoor, Indoor-Outdoor)
- Type: Oil to Oil/ Air to Air
- Insulator: Porcelain/ Hollow Composite – Silicone
- Standard: IEC 60137: 2017/ IEEE C57.19.00/01
- Connection: Draw lead/Draw Rod/Solid Conductor
*Customized Rated Current >3150A are available upon request
**Detailed drawings of our bushing variants are available upon request.
de a fine performance in Generation station transformer applications globally. Available in voltage classes from 24 kV to 52 kV with current ratings from 4000 A to 25000 A, our bushings are resilient to endure aggressive applications.
The range is fully type tested at ILAC-accredited test laboratories, and possess a high level of customization potential based on the customer s needs for dimensions and interchangeability. Drawings for specific models are available upon request
- Rated Voltage: 24 kV – 52 kV*
- Rated Current: 4000 A – 25000 A
- Standards: IEC-60137:2017 / IEEE C.57.19.00/01 / Other equivalent
- Types: Oil filled/Communicating/OIP Condenser
- Conductor: Aluminium / Copper
- Insulation: Oil-impregnated paper / Oil filled Hermetically sealed / Oil Communicating
- Application: Transformer – Outdoor
- Type: Oil to Air
*Special / higher voltage ratings available upon request.
All our standard models are type tested at ILAC/NABL Accredited laboratories as per IEC-60137 / IEEE C57.19.00/01. For any fresh type test requests, we request you to approach us on an individual basis and we can work out a techno-commercial solution suitable for you.
- Manufacturing and field experience of more than 12,000 Bushings
- Computer-aided finely graded Capacitive insulation for optimum electrical field distribution
- Partial discharge free and low dissipation factor attributable to stable long-term performance
- Shatter-proof oil end insulator
- High seismic and SC load withstand capacity
- Available with porcelain or composite insulator housing on air-side
- Excellent thermal performance
- Large size oil indicator for better visibility from distance and angles
- Viton material O-rings for oil sealing
- Special terminals available upon request
- Potential for customization of BCT, oil end length, mounting flange to a large extent
- Exact interchangeability with global reputed makes
- Shortest lead times industry-wide
- VCL/VCD/VCS Bushings are High voltage capacitance graded oil-impregnated paper insulated bushings
- The Bushings comply with IEC 60137 standard s performance requirements for application in power transformers
- The main component of Bushing is the Active part and is manufactured using insulating kraft paper wound around a central tube or solid conductor
- During paper winding, aluminium foils are embedded in paper co-axially at pre-calculated locations to optimise the radial and axial electrical field along the bushing
- After winding, the paper core is dried under vacuum at elevated temperatures and subsequently impregnated with high-quality vacuum dried and degassed Insulating mineral oil
- The bushing is assembled in a controlled environment and filled under vacuum with vacuum dried and degassed Insulating Mineral oil
- After oil filling, each Bushing is subjected to oil-filled over-pressure test for verification of joint sealing
- All bushings are routine tested and type tested in accordance with IEC 60137
Our experienced team of design engineers offer a wide range of built to specification Air to Air Wall bushings and Oil to Oil OIP Bushings solutions wherein they work closely with the end-users / equipment designers from the project engineering stage to understand requirements of mounting, ambient environments, wall dimensions, through hole dimensions, cantilever and pollution requirements amongst many other things to arrive at the optimised wall through bushings design adapted for their end-use.
We welcome Inquiries for these highly specialised solutions immaterial of the quantities required whether it is for a few products or volume requirements, also including Retrofit/replacements of existing Wall Bushings or Oil to Oil Bushings of other reputed Global makes.