| Abstract |
An "Electronic Protection Relay for Protection of Electrical Power System Networks" t comprises a pre-programmed micro-controller, having stabilished power supply convertor unit interconnected to a set of Signal receivers, which continuously monitors the load currents, a set of Limiters to assist the said Controller to compere the monitored signals, a set of seitched and continuously variable Time Multiplier potentiometers to assist the controler in calcuting the trip delay time execution, a set of Relays for controlling Trip and Reclose functions as per the controller generated commands executions, a 3et of Time controlling potentiometers which controls the Reclose delay and Reclaim duration timings of auto-reclosing functions, a interface circuit which allows the measurement and logging of the relay monitored signals and status to cimmunicate to external monitoring measuring unit or communications sk links, and a set of high fault limiter potentiometers to assist to execute instant trip in high fault currents by-pac passing IDMT timing as per figure 1. |