Prototype of Automatic Transfer Switch (ATS) for Solar Power Plant Based on Arduino Uno

Electrical energy plays an important role in supporting daily human activities. The need for electrical always increases according to population growth. However, the supply of is not proportional To meet demand energy, it necessary develop and use alternative such as solar energy. In this paper, prototype Automatic Transfer Switch (ATS) PLN power plant (SPP) carried out so that load can be distributed continuously. ATS electromechanical equipment operates automatically move source from main grid (PLN) network SPP when occur a faults or blackout. will restore has returned normal condition. components consist voltage current sensors, microcontroller relay respectively. Arduino Uno ATmega328 type control switch (relay) automatically. test results show succeeded moving there disturbance blackout condition returns conditions back normal.