madhu insulaors
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Properties
Mechanically Strong
High insulation ResistanceFree fro internal i!urities
High "ielectric Strength
High relati#e !eritti#ity
$on !orousShoul% not get a&ecte% 'ith changes inte!erature
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)orcelain
*lassSynthetic resin
INSULATOR MATERIALS
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Manufacture% fro ,hina ,lay
)lastic clay is i-e% 'ith silicon an% fel%s!ar an%!rocesse% in the ills. t is heate% at the controlle%te!erature. *i#en a !articular sha!e an% co#ere%'ith glae.
*al#anie% ,ast iron is use% for etal !arts insi%e. nsulation resistance is high. )orcelain is heate% to te!eratures such that
insulators ecoe echanically strong an%
reains non !orous. s it is glae% reains clean fro %ust an%
oisture. "ielectric Strength is aout 60/c.
PORCELAIN
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*lass is a%e tough y heat treatent
nnealing. s trans!arent cracs ules an% any
%efects can e easily %etecte%. "i electric strength is high. o' ,oecient of theral e-!ansion less
a&ecte% y changes in te!erature ,hea!er than !orcelain
Resisti#ity is high Si!le %esign ess stronger than )orcelain
,annot e oul%e% in regular sha!es
GLASS
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,o!oun%s of silicon ruer resin.
High tensile strength o' 'eight,o!arati#ely chea!erHigh leaage currentShort life s!an
SYNTHETIC RESIN
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