<abstract xmlns="http://www.w3.org/1999/xhtml">
<p>The  paper presents  a study on the  effects  of thermal aging on a low-voltage cable. Cable samples with a length  of  50 cm  were  subjected  to thermal  cycling  from   +140 °C to −20 °C in  a  climate  chamber  with  controlled temperature. This treatment compares the short-term failure or  the  emergency  overload of  some  cables  under  real operating conditions at low temperatures. The effect of the temperature cycle is investigated through electrical measurements such as dielectric spectroscopy, voltage response measurements, and mechanical measurements such as Shore D hardness investigation. The results revealed that the thermal cycles of accelerated aging caused the plasticizer to  diffuse  into  the  jacket  and  then be  released  into  the environment. At the same time, the thermal shocks produced microcracks in the cable jacket, accelerating the removal of the plasticizer. </p>
</abstract>

The  paper presents  a study on the  effects  of thermal aging on a low-voltage cable. Cable samples with a length  of  50 cm  were  subjected  to thermal  cycling  from   +140 °C to −20 °C in  a  climate  chamber  with  controlled temperature. This treatment compares the short-term failure or  the  emergency  overload of  some  cables  under  real operating conditions at low temperatures. The effect of the temperature cycle is investigated through electrical measurements such as dielectric spectroscopy, voltage response measurements, and mechanical measurements such as Shore D hardness investigation. The results revealed that the thermal cycles of accelerated aging caused the plasticizer to  diffuse  into  the  jacket  and  then be  released  into  the environment. At the same time, the thermal shocks produced microcracks in the cable jacket, accelerating the removal of the plasticizer.

Study on the Behavior of Low-Voltage Cable Insulation Subjected to Thermal Cycle Treatment 

National Institute for Research and Development in Microtechnologies IMT-Bucharest

Faculty of Electrical Engineering, University POLITEHNICA of Bucharest

Faculty of Applied Sciences, University POLITEHNICA of Bucharest

National Institute for Electrical Engineering ICPE-CA

The Scientific Bulletin of Electrical Engineering Faculty

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