Temperature coefficient of conductivity of insulation material

Temperature coefficient of the specific direct current conductivity of insulation material.

Symbol

$\alpha_i$

Unit

1/K

Related

$\gamma_i$

Electrical field coefficient of insulation material [mm/kV]

$\kappa_i$

Electrical conductivity of insulation material at 0°C [S/m]

$M_i$

Material of insulation

Used in

$\delta_i$

Electrical thickness of insulation material [m]

$\Delta w_d$

Increment of volumetric density of dielectric losses in HVDC cables [W/m$^3$]

$\kappa_i$

Electrical conductivity of insulation material at 0°C [S/m]

$w_d$

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

Choices

Material	Value	Reference
PE	0.094	HanyuYe2011 (MDPE type B)
HDPE	0.094	HanyuYe2011 (MDPE type B)
XLPE	0.042	Diban2020 (XLPE low)
XLPEf	0.084	Diban2020 (XLPE medium)
PVC	0.05	none
EPR	0.05	none
IIR	0.05	none
PPLP	0.01	Jeroense1997
Mass	0.01	Jeroense1997
OilP	0.01	Jeroense1997)
PP	0.05	none
SiR	0.05	none
EVA	0.05	none
XHF	0.05	none