Bushing Group

Technologies for transformer bushings
Bushing core, made of resin impregnated paper
RIP core insulator (activ part)
•crêpe insulating paper with condenser layered,
dried under temperature and vacuum,
impregnated under vacuum with epoxy resin.
+ no oil losses possible
+ no risk of fire (non-inflammable)
+ no risk of explosions
+ excellent seismic behaviour
+ lower weight - easier handling
+ lower long term costs
+ oil and gas tight system
+ no housing for oil end necessary
+ operates with damaged housing temporarily
+ core can be fixed to flange
+ partial discharge free
+ excellent ageing experience
+ no loss of insulation media
o max. temperature < 120 or higher
- higher production costs
RIP
condenser layers
Page 3
Oct. 2010; Cigre meeting Santiago / Chile
E T HP BU