In the automation process and control industry, it becomes necessary to reduce equipment-related downtime. There are such heavy-duty machines and applications, that actually cannot afford sudden shutdown, sudden power-cut, and fluctuation in power and current. That is why there are protective and predictive devices such as high resistance grounding , arc flash relay, potentiometer, and alarm panel, et cetera. Let us discuss some of these. HRG HRG is a short form of high resistance grounding. And this type of system is an electrical supply system to control ground-fault voltage on driven equipment. This system is installed to reduce the probability of arc flashes which is basically light and heat produced as part of an arc fault. This device functions to provide unmatched switchgear protection by reducing arc flash energy. It acts as a tool to prevent faults in medium and low-voltage switchgear. Potentiometer Mostly used in applications such as speed controls, flow meters, and tens...