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Stress control tube for cable termination

stress control tube electric field FEA finite element analysis, stress control tube field reduction

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

Task
Calculate the effect of electric stress reduction.

Results
With stress control tube the maximal electric stress along the cable surface reduces from 1.6 to 0.6 kV/mm.

cable electric stress

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