The routine test is to inspect each piece of porcelain disc suspension insulator. Porcelain disc suspension insulator test is necessary.

                          
Porcelain disc suspension insulator                  ceramic suspension insulator test       

Porcelain disc suspension insulator assembly & test:
Assembly of hardware and porcelain is made with Alumina cement, which has superior characteristics over the Portland cement which is normally used. The cement is steam-cured under controlled conditions to achieve optimum physical properties.
Each porcelain disc suspension insulator is mechanically proof-tested at 50% of its M&E rating and is electrically tested prior to shipment.
Porcelain disc suspension insulator can be divided into common insulator and anti-pollution porcelain suspension insulator or anti-fog insulator. Anti-pollution porcelain disc suspension insulator can be used in heavy pollution areas.

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