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Stress control tube for cable termination

This is an example of the cable termination simulation, performed with QuickField software.

Problem Type:
Axisymmetric problem of transient electric.

Geometry:
Stress control tube for cable termination Calculate the effect of electric stress reduction. Conductor V + GND Insulation Screen Shield Stress control tube

Given:
Relative permittivity of air ε = 1.
Relative permittivity of insulation ε = 2.
Relative permittivity of shield ε = 1.2.
Relative permittivity of stress control tube - nonlinear.
Central conductor potential V = +4 kV.
Screen potential - 0 V (grounded).

Problem:
Calculate the effect of electric stress reduction.

Results:
With stress control tube the maximal electric stress reduces from 1.6 to 0.5 kV/mm.

electric field strength distribution along the cable surface

cable electric stress

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