PPC Porcelain post insulators

PPC Insulators PPC Isoladores Santana

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Post insulators catalogue

Catalog ANSI Post


Solid core post insulators catalogue

Catalog Solid Core


High voltage insulators catalogue

Catalog UHV EV


RTV coating for porcelain post insulators

Catalog RTV EV

PPC porcelain post insulators


Under service conditions, the post insulator is submitted to electrical and mechanical stresses according to the parameters of the service site and the performance rating of the switchgear. The most comprehensive range of post insulators up to highest AC and DC system voltages is produced by PPC Insulators with the most progressive technology, engineering and life time.



Depending on environmental conditions and the requested pollution performance of the insulator, we are able to produce all possible shed designs as defined in the IEC 60815 standard including:



alternating shed,

plain shed,

under rib shed,

rain shed,

plus unique shed designs e.g. for 800kVDC applications


Further optimized insulator designs have been developed by PPC with ultra high mechanical strength and maximum extended creepage distances.



It was not possible to manufacture such insulators using conventional porcelain production technology, but the Isostatic technology enables such designs to be produced by PPC Insulators.

Maximum dimensions

Max. height per piece:

2850 mm/112”

Max. shed diameter:

530 mm/21”


800kV Post insulator development from 6 piece design in the 70ies to a 2 part design in 2011

Our advanced post designs include following advantages:

fewer single sections per insulator column, therefore fewer metal parts

shorter column heights while maintaining requirements given by IEC 60815 while fulfilling all additional electrical requirement

improved flashover distance

improved pollution performance by improved Form Factor acc. to IEC 60815

reduced weight, better utilization of material, simplified handling

less use of metal (fewer points of exposure to corrosion)

less field concentrating positions

improved mechanical stability, rigidity