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Angular frequency

Symbol
$\omega$
Unit
rad/s
Formulae
$2\pi f$
Related
$f$
System frequency [Hz]
$\pi$
Archimedes' constant $\pi$
Used in
$B_1$
Loss coefficient $B_1$ of armour [$\Omega$/m]
$B_2$
Loss coefficient $B_2$ of armour [$\Omega$/m]
$\beta_1$
Substitution coefficient $\beta_1$ for eddy-currents
$E_a$
Induced shield voltage in phase a [V/m]
$E_b$
Induced shield voltage in phase b [V/m]
$E_c$
Induced shield voltage in phase c [V/m]
$E_p$
Induced shield voltage in conductor p [V/m]
$I_C$
Capacitive load current [A/m]
$I_{Ce}$
Capacitive earth short-circuit current [A/m]
$I_{EMF}$
Phase current for EMF calculation [A]
$L_{crit}$
Critical system length [km]
$\lambda_{12}$
Loss factor of shield by eddy currents
$\lambda_2$
Loss factor of armour
$\lambda_{21}$
Loss factor of armour by circulating currents
$m_0$
Substitution coefficient $m_0$ for eddy-currents [Hz.m/$\Omega$]
$m_E$
Parameter m of earth return
$m_{z,ar}$
Parameter m of armour
$m_{z,c}$
Parameter m of conductor
$m_{z,e}$
Parameter m of earth
$m_{z,s}$
Parameter m of shield
$m_{z,sc}$
Parameter m of screen
$m_{z,sh}$
Parameter m of sheath
$P_C$
Charging capacity [var/m]
$P_L$
Active power load-side [kW]
$R_E$
Equivalent resistance of earth return path [$\Omega$/m]
$V_{drop}$
Voltage drop [V/(A.m)]
$W_d$
Dielectric losses [W/m]
$w_d$
Volumetric density of dielectric losses [W/m$^3$]
$X_1$
Positive sequence reactance [$\Omega$/m]
$X_a$
Self reactance of conductor [$\Omega$/m]
$X_{ap}$
Equivalent mutual reactance between conductors [$\Omega$/m]
$X_{ar}$
Self reactance of armour [$\Omega$/m]
$X_c$
Mutual reactance between middle and outer cables in flat formation with earth return [$\Omega$/m]
$X_{cp}$
Zero-sequence reactance steel pipe [$\Omega$/m]
$X_d$
Reactance steel pipe [$\Omega$/m]
$X_e$
Self reactance of screen/sheath [$\Omega$/m]
$X_{ij}$
Mutual reactance between two conductors i and j [$\Omega$/m]
$X_L$
Mutual reactance between outer cables in flat formation [$\Omega$/m]
$X_m$
Mutual reactance between conductors flat formation without transposition [$\Omega$/m]
$X_{mut}$
Mutual reactance [$\Omega$/m]
$X_s$
Self reactance of screen/sheath [$\Omega$/m]
$X_{S1}$
Reactance section 1 [$\Omega$/m]
$X_{S2}$
Reactance section 2 [$\Omega$/m]
$X_{S3}$
Reactance section 3 [$\Omega$/m]
$X_{sw}$
Reactance skywire [$\Omega$/m]
$Y_1$
Positive sequence admittance [S/m]
$Y_{ag}$
Admittance armour - ground [S/m]
$Y_{cs}$
Admittance conductor - shield [S/m]
$Y_{sa}$
Admittance shield - armour [S/m]
$Y_{sg}$
Admittance shield - ground [S/m]
$Z_{ct}$
Self impedance of earth continuity conductor [$\Omega$/m]
$Z_{kp}$
Impedance between cable k and p in ground [$\Omega$/m]
$Z_{mt}$
Equivalent mutual impedance between earth continuity conductor and any cable [$\Omega$/m]
$Z_{oig}$
Mutual impedance between shields/sheaths of inner and outer cables with ground return [$\Omega$/m]
$Z_{oog}$
Mutual impedance between shields/sheaths of outer cables with ground return [$\Omega$/m]
$Z_{ss}$
Self impedance of the shield/sheath with ground return [$\Omega$/m]
$\mathscr{z}_2$
Impedance of insulation between conductor and screen [$\Omega$/m]
$\mathscr{z}_{34}$
Impedance of insulation between shield and armour [$\Omega$/m]
$\mathscr{z}_{56}$
Impedance of jacket [$\Omega$/m]
$\mathscr{z}_6$
Impedance of insulation between screen and sheath [$\Omega$/m]
$\mathscr{z}_g$
Impedance of earth return in ground [$\Omega$/m]