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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL
SymbolNameUnit
S $s_{air}$Axial spacing between objectsm
$s_{b1}$Thickness of surface layerm
$s_{b2}$Thickness of middle layerm
$s_{b3}$Thickness from object to top of bedding layerm
$s_{b4}$Thickness from object to bottom of bedding layerm
$s_c$Separation of conductors in a systemmm
$s_{cm}$Separation of conductors in a systemm
$S_G$Apparent power at injecting pointkVA
$S_{gas}$Sutherland's constantK
$s_{ij}$Spacing between object i and j
$S_k$Cross-sectional area of current carrying componentmm$^2$
$s_{S1}$Spacing between phases in 1st sectionp.u.
$s_{S2}$Spacing between phases in 2nd sectionp.u.
$s_{S3}$Spacing between phases in 3rd sectionp.u.
$SI$Surge Impedance$\Omega$
$\sigma$Stefan Boltzmann constantW/m$^2$K$^4$
$\sigma_{ab}$Volumetric heat capacity of armour beddingJ/K.m$^3$
$\sigma_{ab,1}$Volumetric heat capacity of 1st armour beddingJ/K.m$^3$
$\sigma_{ab,2}$Volumetric heat capacity of 2nd armour beddingJ/K.m$^3$
$\sigma_{ar}$Volumetric heat capacity of armour materialJ/K.m$^3$
$\sigma_c$Volumetric heat capacity of conductor materialJ/K.m$^3$
$\sigma_d$Volumetric heat capacity of duct materialJ/K.m$^3$
$\sigma_{d,fill}$Volumetric heat capacity of duct fillingJ/K.m$^3$
$\sigma_{encl}$Volumetric heat capacity of enclosure materialJ/K.m$^3$
$\sigma_f$Volumetric heat capacity of fillerJ/K.m$^3$
$\sigma_{fluid}$Volumetric heat capacity of fluidJ/K.m$^3$
$\sigma_i$Volumetric heat capacity of insulation materialJ/K.m$^3$
$\sigma_{ins}$Volumetric heat capacity of insulationJ/K.m$^3$
$\sigma_j$Volumetric heat capacity of jacket materialJ/K.m$^3$
$\sigma_{k2}$Specific isobaric volumetric heat capacity of layer located belowJ/K.m$^3$
$\sigma_{k3}$Volumetric heat capacity of layer located aboveJ/K.m$^3$
$\sigma_{kc}$Volumetric heat capacity of metallic componentJ/K.m$^3$
$\sigma_{ki}$Volumetric heat capacity of adjacent materialJ/K.m$^3$
$\sigma_{pipe}$Volumetric heat capacity of fluid-filled pipeJ/K.m$^3$
$\sigma_{prot}$Specific isobaric volumetric heat capacity of protective coverJ/K.m$^3$
$\sigma_{sc}$Volumetric heat capacity of screen materialJ/K.m$^3$
$\sigma_{scb}$Volumetric heat capacity of screen beddingJ/K.m$^3$
$\sigma_{scs}$Volumetric heat capacity of screen servingJ/K.m$^3$
$\sigma_{sh}$Volumetric heat capacity of sheath materialJ/K.m$^3$
$\sigma_{shj}$Volumetric heat capacity of sheath jacket materialJ/K.m$^3$
$\sigma_{skid}$Volumetric heat capacity of skid wiresJ/K.m$^3$
$\sigma_{sp}$Volumetric heat capacity of steel pipe materialJ/K.m$^3$
$\sigma_{sun}$Absorption coefficient of solar radiation