Abstract
For a specific type of design of a composite long rod insulator with silicone rubber as shed material, a complete
presentation of all experiences gained since 196 7 - the beginning of service trial - is provided. Damages which occu"ed
are descn·bed individually, and so are the solutions meanwhile applied to overcome these problems. The service
experience gained until now may altogether be evaluated positively. The problem of transferring of the test results
to insulators of other designs and matenals is pointed out; this could be eliminated by creating standardized test
programs. Additional tasks in this respect are mentioned.
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