33KV post insulators shall be sound, free from defects, thoroughly verified, smoothly glazed and type of Post Insulator shall be Stack Type.

33KV post insulators shall be designed and manufactured to avoid stresses due to expansion and contraction which may lead to deterioration, stress concentration due to direct engagement of Porcelain with metal fittings and shapes which do not facilitate cleaning by normal methods.

The electrical and mechanical characteristics of Post Insulator shall conform to the International specific technical parameters of. The glaze shall be brown in color. The glaze shall cover the exposed Porcelain parts of the Insulator.

33KV Post Insulators shall be suitable for upright mounting on steel structures.

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