Documentation

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
R $R_0$Zero sequence resistance$\Omega$/m
$r_1$Radius of the circle circumscribing the three shaped conductorsmm
$R_1$Resistance of conductor before emergency rating$\Omega$/m
$R_{ar}$Electrical resistance of armour$\Omega$/m
$r_{arc}$Radius of a bendm
$r_b$Equivalent radius of backfillmm
$r_c$Radius of conductormm
$R_c$Electrical resistance of conductor$\Omega$/m
$R_{c1}$Thermal resistance, 1st loopK.m/W
$R_{c2}$Thermal resistance, 2nd loopK.m/W
$R_{c20}$DC resistance of conductor at 20°C$\Omega$/m
$R_{c3}$Thermal resistance, 3rd loopK.m/W
$R_{c4}$Thermal resistance, 4th loopK.m/W
$R_{cDC}$Electrical DC resistance of conductor$\Omega$/m
$R_{CG}$Thermal resistance of multi-layer backfillK.m/W
$R_{co}$DC resistance of conductor at 20°C$\Omega$/km
$R_e$Electrical resistance of shield and armour$\Omega$/m
$R_{earth}$Equivalent resistance of earth return pathp.u.
$R_{encl}$Electrical AC resistance of enclosure$\Omega$/m
$R_{encl20}$Electrical DC resistance of enclosure at 20°C$\Omega$/m
$R_{enclDC}$Electrical DC resistance of enclosure$\Omega$/m
$r_F$Radius below the insulationmm
$R_{gas}$Specific gas constantJ/kg.K
$R_{gas0}$Universal molar gas constant
$r_I$Radius of the insulationmm
$r_{ij}$Coefficient r for view factor
$R_{max}$Resistance of conductor at emergency rating$\Omega$/m
$r_{mbi}$Minimal bending radius for installationm
$r_{mbif}$Factor of minimal installation bending radius
$r_{mbp}$Minimal bending radius during cable pullingm
$r_{mbpf}$Factor of minimal pulling bending radius
$r_o$Radius of objectm
$R_{q11}$Thermal resistance 11 of multi-layer backfillK.m/W
$R_{q12}$Thermal resistance 12 of multi-layer backfillK.m/W
$R_{q13}$Thermal resistance 13 of multi-layer backfillK.m/W
$R_{q21}$Thermal resistance 21 of multi-layer backfillK.m/W
$R_{q22}$Thermal resistance 22 of multi-layer backfillK.m/W
$R_{q31}$Thermal resistance 31 of multi-layer backfillK.m/W
$R_{q32}$Thermal resistance 32 of multi-layer backfillK.m/W
$R_s$Electrical resistance of shield$\Omega$/m
$R_{sc}$Electrical resistance of screen$\Omega$/m
$R_{sh}$Electrical resistance of sheath$\Omega$/m
$R_{so}$Resistance of screen and sheath at 20°C$\Omega$/m
$R_{sp}$Electrical resistance of steel pipe$\Omega$/m
$r_x$Radius to point x in insulationmm
$\mathrm{Ra}_c$Rayleigh number, conductor to gas
$\mathrm{Ra}_{encl}$Rayleigh number, gas to enclosure
$\mathrm{Ra}_{gas}$Rayleigh number gas/duct
$\mathrm{Ra}_L$Rayleigh number, ground to air
$\mathrm{Ra}_{prot}$Rayleigh number, surface to air
$\mathrm{Re}_{air}$Reynolds number for air
$\mathrm{Re}_w$Reynolds number for water
$RF$Reduction factor
$\rho_4$Thermal resistivity of soilK.m/W
$\rho_{4d}$Thermal resistivity of dry soilK.m/W
$\rho_{ab}$Thermal resistivity of armour beddingK.m/W
$\rho_{ab,1}$Thermal resistivity of 1st armour beddingK.m/W
$\rho_{ab,2}$Thermal resistivity of 2nd armour beddingK.m/W
$\rho_{ar}$Specific electrical resistivity of armour material$\Omega$.m
$\rho_b$Thermal resistivity backfillK.m/W
$\rho_{b1}$Thermal resistivity of surface layerK.m/W
$\rho_{b2}$Thermal resistivity of middle layerK.m/W
$\rho_c$Electrical resistivity of conductor material$\Omega$.m
$\rho_{corr}$Thermal resistivity of corrugation fillingK.m/W
$\rho_{cr}$Thermal resistivity of conductor materialK.m/W
$\rho_d$Thermal resistivity of duct materialK.m/W
$\rho_{d,fill}$Thermal resistivity of bentonite fillingK.m/W
$\rho_{earth}$Specific electrical resistivity of soil$\Omega$.m
$\rho_{encl}$Specific electrical resistivity of enclosure material$\Omega$.m
$\rho_f$Thermal resistivity of fillerK.m/W
$\rho_{gas}$Gas densitykg/m$^3$
$\rho_i$Thermal resistivity of insulationK.m/W
$\rho_j$Thermal resistivity of jacket materialK.m/W
$\rho_{k2}$Thermal resistivity of the layer located aboveK.m/W
$\rho_{k20}$Electrical resistivity of metallic component$\Omega$.m
$\rho_{k3}$Thermal resistivity of the layer located belowK.m/W
$\rho_{ki}$Thermal resistivity of adjacent materialK.m/W
$\rho_{sc}$Specific electrical resistivity of screen material$\Omega$.m
$\rho_{scb}$Thermal resistivity of screen beddingK.m/W
$\rho_{scs}$Thermal resistivity of screen servingK.m/W
$\rho_{sh}$Specific electrical resistivity of sheath material$\Omega$.m
$\rho_{shj}$Thermal resistivity of sheath jacket materialK.m/W
$\rho_{skid}$Specific electrical resistivity of skid wire material$\Omega$.m
$\rho_{sp}$Specific electrical resistivity of steep pipe material$\Omega$.m
$\rho_t$Thermal resistivity of wallK.m/W