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Home » Power Brand » Yash Highvoltage expanding product range with 245kV OIP Transformer Bushing (Air to Oil Type)

Yash Highvoltage expanding product range with 245kV OIP Transformer Bushing (Air to Oil Type)

By December 7, 2023 12:50 pm IST

Yash Highvoltage expanding product range with 245kV OIP Transformer Bushing (Air to Oil Type)
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The company prides itself on being a one-stop solution provider for transformer bushings, including Oil-Impregnated Paper (OIP), Resin-Impregnated Paper (RIP), and Resin-Impregnated Synthetic (RIS) bushings.

Established in 2002, Yash Highvoltage Ltd. is an ISO 9001 company and an independent, indigenous manufacturer of HV & EHV niche Condenser graded transformer bushings (for Highvoltage and High current applications) with more than 30000 bushings performing satisfactorily globally across 50+ countries including some noteworthy executions for discerning customers in USA, Argentina, Italy, Australia, Korea, Brazil, Columbia, Mexico, Ecuador, Spain, Turkey, Bulgaria, Oman, Abu Dhabi, Saudi Arabia, Kuwait, Ghana, Congo, Bangladesh, Nepal, Tanzania, Taiwan, Israel and many more.

Today YASH is approved as a bushing supplier across all major transmission/generation utilities, power producers, EPCs, and OEMs in India and abroad, including POWERGRID (PGCIL), NTPC (National Thermal Power Corporation), NPCIL (Nuclear Power Corporation of India Ltd.), RDSO (Indian Railways) as well as all major state utilities and private power producers in India.

HV test LAb
autoclave-set-up-
Realising the dream of “one stop shop for transformer bushings

Yash today is synonymous with a solution provider for all combinations of OIP/RIP/ RIS bushings, whether it is in terms of the insulator material, or the standard. A few of the innovative solutions include:

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High Current Bushings up to 25,000 Amperes for Generation Station Transformers.*High Voltage Oil to Air/Air to Air/Oil to Oil Type OIP Condenser Bushings/Wall Bushings up to 245kV. *
High Voltage Air to Oil, Dry type RIP & RIS Condenser Bushings up to 245kV (under equity partnership with MGC Moser Glaser – Switzerland)**Highly customised and special bushings as retrofit & replacement for existing & old transformer bushings of any reputed global make.
*External envelope available in Porcelain (Grey/Brown), or Polymer Silicone Grey, Standard: IEC 60137:2017/IEEE C57.19.00/01
**External envelope available in Polymer Silicone Grey, Standard: IEC 60137:2017
Adding 245 kV OIP (type: Air to Oil) bushings in product basket.

After gaining rich manufacturing and service experience of more than 20 years, Yash is proud to announce the launch of 245kV Class OIP Transformer Bushings, thus completing a full kV range of 24kV to 245kV OIP, RIP and RIS Bushings.

The Key Manufacturing and Testing Facilities are,
  • Electromagnetically Shielded Laboratory (Faraday Cage), with Background Noise <2pC.
  • SF6 Insulated Test Transformer PD Free up to 505kV.
  • SF6 Filled Standard Capacitor with Low Tan Delta Values.
  • Haefely Make Auto-balanced Capacitance & Tan Delta Bridge.
  • Haefely Make PD Measuring Equipment. 
  • Special Purpose Condenser Core Winding Machine.
  • PLC Controlled Autoclave for Drying and Impregnation of Condenser Cores.
  • Cleanroom for Product Assembly.
  • Vacuum Oil Flooding Station.
The Salient Features of 245kV OIP Bushings (Air to Oil Type) are,
  • Air End Insulator: Porcelain Insulator with Cemented Flanges on both ends or Polymer / Composite Insulator with Glued Flanges on both ends to achieve mechanically reinforced & high reliability designs.
  • Complies with Dimensional Requirements as per IS: 12676- 1989.
  • Shatterproof Epoxy Moulded Oil End Insulator.
  • Viton O-Rings for Fool-proof Sealing & Long Term Reliability.
  • Insulating Kraft Paper sourced from World’s Best Paper Manufacturers.
  • Naphthene Based Insulating Oil used for Impregnation of Paper and for filling in Bushing, thus achieving superior long term electrical ageing performance.
  • Computer-aided finely condenser graded insulation- To ensure Uniform Electrical Field Distribution along the Air End & Oil End Insulator and for uniform radial stress in insulation to achieve longer life.
  • PD Inception Free- One Minute AC Withstand (After Routine Impulse Testing).
  • Oil Sampling Valve at Mounting Flange Level To Facilitate Health Monitoring During Service.
  • PU Foam Moulded Supports for Porcelain Insulators in the Wooden Packing Case for safe transport to Indian and International customers.
  • “Shock Watch Labels” on Packing Cases to detect unsafe Transportation and Handling, before commissioning the Bushings.
  • Lower Tan Delta values: Less than or equal to 0.4 percent (Low or negligible variation from 10kV to 245kV, before and after Routine HV & Impulse Tests).
  • Periodic DFR (Dielectric Frequency Response) measurements.
  • Compliance with IEC / IEEE Standard Requirements.
  • Large size oil indicator for better visibility from distance and at an angle, over a wider temperature range.
  • Standard Current Ratings & Construction: Draw Lead Typeup to 800Amps, Draw Rod Typeup to 1250Amps, Solid Stem Type- up to 2000 Amps. Standard HV terminals & Standard Thimbles / Cable Connectors / Draw Rods are supplied with the Bushings, Non-Standard constructions are also possible to be supplied.

With a commitment to offer appropriate solutions to customers, while ensuring best value for money and a goal to provide competitive products and services on-time, YASH is set to serve global customers for years to come.

CONTACT:
Yash Highvoltage Ltd.
P.O. Khakhariya, Halol Champaner Road,
Tal. Savli, Dist. Vadodara, Gujarat 39150,
India.
Website: www.yashhv.com
Primary Contact: Mr. Nirav Patel
(GM-Business Operations)
E: nirav@yashhv.com
Ph: +91 90990 82368

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