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1. Materials used
An insulator is generally made up of two parts: an insulating part and metal connecting parts, sealed onto this insulating part.
1.1 Insulation
Up until the 1980s, only glass and ceramics had proven their worth in operation, even though both materials are inherently fragile.
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Ceramics. – They are currently used for high-voltage insulators and correspond to similar formulas, either Al 2 O 3 , SiO 2 (traditional porcelain), or Al 2 O 3 , 5 SiO 2 (soapstone)....
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Materials used
Main types
Standardization
French standards
- Ceramic insulators (high voltage) – Solid shaft insulators with rod mounting (CHT). - NF C66-133 - Avril 1969
- Ceramic insulators (high voltage) – Solid barrel insulators with calibrated head (CHT...C). - NF C66-134 - Avril 1969
- Insulators and equipment for overhead lines – Glass...
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