Porcelain pin post insulator for overhead line is used as the insulating elements for power lines for nominal voltage up to 36 kV, mainly on the suspension towers.

Medium voltage porcelain pin post insulators produced from the ceramic material with aluminium or hot-dip galvanized cast iron fittings, assembled on the sulphur or lead antimony cementing.

Scientific Instrument Services for ceramic pin post insulator can provide you with the most complete service and product line for mass spectrometers, gas chromatographs and related equipment.

Why do ceramics make good porcelain pin post insulator for overhead line?
Ceramics make good porcelain pin post insulators because they do not have free electrons within their structure. Free electrons are (valence) electrons that are unbound within the atomic or molecular matrix. These electrons are available to support current flow. Recall that current flow is not an electron moving through a conductor, but rather is an electron coming into one end of the conductor, the free electrons within the conductor shifting over a tiny bit, and an electron leaving the other end of the conductor. It's like musical chairs, but is musical electrons. If no electrons within the material are available to shift over to support current flow, the material will be highly resistant to current. And ceramics, because they don't have unbound electrons (free electrons), act as a porcelain pin post insulator for overhead line.

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