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Temperature coefficient of screen material

Values for temperature coefficient of screen per K at 20°C. are taken from standard IEC 60287-1-1 Ed.2.1 where available and from standard technical handbooks for the others.

Value for Aldrey (AL3) is taken from diploma thesis 'Quantifying the effect of time and temperature on the mechanical behaviour of Aldrey overhead line conductors' by M. Frigerio, 2016.

Symbol
$\alpha_{sc}$
Unit
1/K
Related
$M_{sc}$
Material of screen
Used in
$\beta_{sc}$
Reciprocal of temperature coefficient of screen material [K]
$R_{sc}$
Electrical resistance of screen [$\Omega$/m]
Choices
MaterialValueReference
Cu0.00393IEC 60287-1-1
Al0.00403IEC 60287-1-1
AL30.004Manufacturer
Brz0.003IEC 60287-1-1
CuZn0.0019IEC 60287-1-1
S0.0045IEC 60287-1-1
SS0.001IEC 60287-1-1
Zn0.004engineeringtoolbox.com