However, these systems are inherently fraught with risks, necessitating robust high voltage protection strategies to safeguard against electrical faults and disturbances. Equipment failures, power outages, and safety hazards are significant concerns that can arise from such faults. 5 kA nominal and up to 25 kA in case of a short-circuit, reliable and safe solutions are necessary for rapid switching of high voltage circuits under normal operating modes as well as under emergencies. They help isolate faulted equipment quickly enough to reduce damage, maintain system. Protective relays and devices have been developed over 100 years ago to provide “last line” of defense for the electrical systems.
