core station post insulators are comparatively lighter and have
smaller diameters than other types of post insulators of similar
voltage class. These are ideally suitable for compact installations
which result in slim and neat appearance and afford better harmony
with other modern apparatus in any EHV/UHV substation.
Solid core station post insulators have superior antipollution
performance, low RIV, better arc resistibility and lower deflection
under cantilever load.