How to extend switchgear life and improve system reliability

摘要

Not long ago, a telephone had a specific purpose: making phone calls. In the early 2000s, cell phone manufacturers took advantage of new technologies to enable users to not only make phone calls from anywhere, but also take photos, play games, identify the species of trees in the backyard, get a weather forecast and so on. The possibilities of applications for modern smartphones extend as far as the imagination can go. During the smartphone revolution, electrical protection and control system technology also advanced considerably. With the advent of microprocessor-based protection relays, the modern relay can do much more than protect a circuit. They now can perform communications on multiple protocols, system monitoring, alarms and self-alarms, arc flash mitigation, controls, time delay and remote breaker operations, event reporting, increased safety and more.