Order Publications

Reference: ISH2015_123

Type:
ISH Collection
Title:

INVESTIGATIONS ON AGEING OF HOLLOW MICROSPHERE FILLED SILICONE GEL UNDER ELECTRIC FIELD STRESS

 

Abstracts

The increasing requirements in MV- and HV- technologies necessitate new and improved insulation materials. Silicone gel filled with hollow microsphere (HMS) is such a novel isolation material. The gas-filled polymeric microspheres were incorporated into a silicone gel matrix. The structure of the resulting material is similar to foam. To use HMS filled silicone gels in medium and high voltage components it is necessary to have a comprehensive and a consolidated knowledge of their electrical properties. Especially the ageing performance during electrical stress is important. In this investigation an economically test has been executed to get knowledge about the electrical ageing performance of silicone gel filled with HMS. To investigate the ageing performance of these materials a life characteristic is needed. At first the electrical short term strength was investigated, it was used as starting point on the liftime curve. To age the specimens, an operating field strength was elected, which corresponds to the field strength in practice. The lifetime of typical applications is designed for about 40 years. In the present investigation the specimens have been tested under electrical stress for about 2.8 years.
 

File Size: 1 MB

Year: 2015

 
 
 
Download
Member
FREE free
Non member
FREE free
 

Your AccountYour Account

Password forgotten

Members

may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications

ContactContact

For any questions in connection with the on-line library, contact:


Publications and Editions Manager

publications@cigre.org