Effect of Ground Electrodes on the Susceptibility to Damage of Customer Premises Equipment (CPE) under Impulse Conditions

Usman Muhammad, Normiza Mohamad Nor, Annuar Mohd Ramli and Nurul Nadia Ahmad
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Usman Muhammad: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Normiza Mohamad Nor: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Annuar Mohd Ramli: Fixed Infra Media Lab, Research & Innovation Development Division, TMRD Sdn. Bhd, TM Innovation Centre, Cyberjaya 63000, Malaysia
Nurul Nadia Ahmad: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia

Energies, 2022, vol. 15, issue 3, 1-14

Abstract: One of the requirements for the safe operation of customer premises equipment (CPE) is an adequate grounding system as a means to divert high fault currents to the ground. In this work we report on the results of an experimental study of the impulse characteristics at a charging voltage of 30 kV on the surge protective device connected to 16 earth electrodes and installed at two sites, giving various ground resistance at low voltages, R DC values. All of these grounding electrodes were installed and tested under the same charging voltage to determine the effectiveness of ground electrodes toward the damage of a modem at the premises. We observed that modems did not experience damage when the ground electrode of the distribution pole (DP) had an RDC below 30 Ω in general and below 46 Ω when ground electrodes installed in low resistivity soil were used. The impulse polarity did not affect the damage susceptibility of the CPE.

Keywords: grounding system; customer premises equipment (CPE); damage susceptibility; impulse conditions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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