Electrical conductivity of insulation material at 0°C

Specific direct current conductivity of insulation material at 0°C and 0 kV/mm electrical field strength. Often the symbol $\sigma$ is used.

The values were mainly taken from the book 'An Introduction to Materials Engineering and Science: For Chemical and Materials Engineers' chapter 8 by Brian S. Mitchell, Wiley Online Library, 2003 plus some papers.

Symbol

$\kappa_i$

Unit

S/m

Formulae

$\kappa_i e^{\alpha_i \theta_i+\gamma_i E_i}$

Related

$\alpha_i$

Temperature coefficient of conductivity of insulation material [1/K]

$E_i$

Electrical field strength [kV/mm]

$\gamma_i$

Electrical field coefficient of insulation material [mm/kV]

$M_i$

Material of insulation

$\theta_i$

Temperature of insulation [°C]

Used in

$G$

Conductance [S/m]

$\lambda_i$

Parameter $\lambda$ for linear density of dielectric losses

$w_d$

Volumetric density of dielectric losses [W/m$^3$]

Choices

Material	Value	Reference
PE	3e-15	HanyuYe2011 (MDPE type B)
HDPE	1e-15	Wiley, resistivity $10^{15}-5\cdot10^{16}$
XLPE	1.5e-14	Varia
XLPEf	1e-14	Diban2020 (XLPE low, medium, high)
PVC	1e-14	Wiley, resistivity $>10^{14}$
EPR	1.7e-12	Wiley, resistivity $\simeq 6 \cdot 10^{11}$
IIR	1.7e-12	Wiley, resistivity $\simeq 6 \cdot 10^{11}$
PPLP	2.1e-15	Kwon2015 (average)
Mass	1e-16	Jeroense1997
OilP	6.7e-15	Kwon2015 (average)
PP	1e-14	Wiley, resistivity $>10^{14}$
SiR	1e-13	Wiley, resistivity $\simeq 10^{13}$
EVA	1e-14	Wiley, conductivity $<10^{-14}$
XHF	1e-15	none