high voltage bushing

 Bushing is defined as a structure carrying one or several conductors through a partition such as a wall or tank etc. and insulating it or them therefrom

 A bushing has to provide : 

- Electrical insulation to the conductor for the working voltage and for various over voltages, which occur in service.

 - Mechanical support against various Mechanical forces.

TYPES OF BUSHINGS

1.1 Application

i) Alternator bushing
ii) Transformer bushing
iii) Bushings for switch gear
iv) Wall bushing or roof bushing
v) Cable end and joint box bushing

1.2 Application:
i) Indoor type
ii) Outdoor type

2.1 Type of Bushing:
n i) Stem type
n ii) Pull-through type

2.2 Type of Bushings:
n i) Condenser core type
n ii) Non-condenser core type
(Hollow Porcelain type)
n iii) Gas filled bushing
n iv) Solid Bushing

Solid Ceramic Bushing

 Epoxy Bushing

3. Type of insulation used in manufacturing Condenser Bushing :

i) Synthetic Resin Bonded Paper (SRBP)
• Oil filled
• Compound filled

ii) Oil Impregnated Paper (OIP)
• iii) Resin impregnated Paper (RIP)