Temperature and Electric Field Dependence of the Time Domain Dielectric Response of a Medium Voltage Cable Joint Stress Control Sleeve

dependence of the time domain dielectric response of a virgin stress control sleeve commonly used in heat shrink joints has been studied. The result show that the conductivity of the stress control sleeve is strongly temperature dependent and that space charge phenomenon build up even at average fields less than 1 kV/mm. The space charge buildup also causes anomalous depolarization currents where the polarity is the same as that for the polarization currents, especially at the temperature above the melting peak of the material