Mnemonic:
High voltage wall penetrating ceramic sleeve with different shapes at both ends.
The concave convex corrugated end must be installed outdoors.
Explanation:
The working environment at both ends of the high-voltage outdoor wall penetrating sleeve is different. One end is located outdoors, and the working environment is harsh. Making the porcelain sleeve into a concave convex corrugated shape has the following three benefits: increasing the surface length, increasing the leakage distance along the surface, and each ripple plays a role in blocking the arc, improving the sliding voltage of the sleeve; On rainy days, ripples play a role in blocking water flow, and sewage washed down by heavy rain will not form water columns and cause grounding short circuits; When dust and dirt fall on the porcelain sleeve, the uneven distribution of the concave and convex ripples will ensure the compressive strength of the porcelain sleeve to a certain extent. The other end is located indoors, and for the convenience of manufacturing and cost reduction, it is not necessary to create a concave convex ripple shape. To ensure the safe operation of outdoor wall penetrating sleeves, the end with concave and convex waveforms must be installed outdoors during installation.