Feeder Board Design with GCHK-100 Protection Relay with Ground Wire Verification, Ground Fault Protection and Frame Voltage for Protection of Human Personnel

Osorio-Alonzo J.L.; Romero-Alva V. · SSRG International Journal of Electrical and Electronics Engineering (2023) · DOI: 10.14445/23488379/ijeee-v10i10p111

Resumen

Nowadays, in the formal mining industry, there are failures due to ground or casing discharges when mobile drilling equipment is used, which causes damages to the operating personnel of this equipment. This work proposes a solution by designing a power supply board with a relay that senses the casing voltage of the ground fault current. It verifies the ground wire, which circulates in the power supply of the drilling rigs. At the end of the design, laboratory tests were made to the relay, where the response times of the relay were verified; being in the ground fault injected a current of 0.25Amp and giving a time of 17.20mS of response, the voltage in the casing triggered instantaneously in 38V, and the resistance of the cable beginning instantaneously with a resistance of 20ohms.

Instituciones: Universidad de Ciencias y Humanidades