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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

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.
Voltage U = 4 kV.

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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QuickField 6.3 Service pack 2