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3. Classification
In accordance with NF EN 60383-1, overhead line insulators are divided into two classes according to their shape.
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Class A
It includes all insulators or string elements for which the shortest length ε of the perforation channel through the solid insulating material is at least equal to half the shortest distance in air
outside the insulator. This shape implies that these insulators are imperforable.
outside the insulator. This shape implies that these insulators are imperforable.
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Classification
Characteristics of a chain element or rigid insulator
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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