Enter time (00:00). First the right most digit is enter, and the text is shifted left. Press A on the keypad to start/stop the countdown. When timer is active the relay is closed. When the time ...

I've been doing a lot of relay-based projects lately; building several light timer projects. The first couple used Arduino-class devices, simple relays and provided the ability to set multiple on and ...

With the change in microgrid operating mode, the protection scheme needs to be modified which is uneconomical and time inefficient. In this paper, a novel optimal protection coordination scheme is ...