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