RIP BUSHINGS Presentation

A presenattion on RIP bushings technology used in power industry.

1. RIP BUSHINGS Ms. Snehali Sable CTR Manufacturing Industries Ltd.

2. Transformer Bushings Bushing” is a device that enables one or several conductors to pass through grounded transformer tank, and insulates the conductors from it . Broadly EHV class bushings (132 kV &above) can be categorized in two types based on their material, manufacturing & design :- 1. Porcelain OIP Bushing ( Oil Impregnated Paper ) 2. Composite RIP Bushing ( Resin Impregnated Paper)

3. Definition Bushing means a structure carrying one or several conductors through a partition such as a wall or tank etc. and insulating it or them therefrom, including the means of attachment ( flange or other fixing device) to the partition. The conductor may be an integral part of the bushing or may be drawn into the central tube of the bushing. (Source: E&E manufacturers Association of India)

4. Bushing Specifications Rated Voltage ( UN) 3.6 , 7.2, 12, 17.5, 24, 36, 52, 72.5, 123, 145, 245, 420, 765 KV Rated Current ( IN ) 100, 250, 315, 400, 500, 630, 800, 1 000, 1 250, 1600 , 2000 , 2500, 3150 , 4000 , 5000 , 6300 , 8000 , 10000 , 12500 , 16000 , 20000, 25000 , 31500 and 40000 A Source: BIS for Bushings

5. RIP TYPES Air-Oil : Oil Switches Oil-Oil : Cable connection of transformer Air- Oil : Power transformer and shunt reactor (12 – 1200 KV) Air- Air : Line bushings Air- Oil : Oil switches (40.5 – 252 KV) Air- SF6 : Cellular type GIS

6. APPLICATIONS Transformer Shunt Reactor Circuit breaker Power capacitor DC switchgear EHV class PT

7. RIP standards AC for 12- 1200 kV : IEC 60137 GOST 10693-81 Russian standard DC for 110-800 kV : IEC 62199 IEEE – C57.19.0001

8. Why dry bushings ? Fully dry, oil free technologies Excellent electrical, thermal and mechanical characteristics Fire and explosion resistant High safety for personal and equipment Environmental friendly Maintenance- and check-free Low life-time costs Fulfilling highest technical requirements Transportation , storage and installation at any angle Can be energized immediately after installation

9. Company Profiling IZOLYATOR: 12 – 1200 kV ABB: 52 – 170 kV MGC, TRAVESCA : 36 kV – 300 kV XIAN XD HIGH VOLTAGE TRENCH HIGH VOLTAGE 72.5 kV – 245 kV HSP GmBH : 420 kV and 800 kV ALSTOM GRID: SIEMENS: 420 – 1100 kV 50 Hz Solutions, Australia : RIP up to 550 kV YashHigh Voltage Insulator: 300 kV

10. SIEMENS 420 – 1100 kV First dry version of HVDC RIP transformer and wall bushings: 1997: 500 kV 2009: 800 kV 2012: 1100 kV MTBF ERIP 38000 Yrs. MTBF OIP 10200 Yrs.

11. RIP ADVANTAGES Reliable Secure Advanced Design Durability Ecologically Friendly Service Free Ease of Operation