V-I Meter Based Autoswitch
IOSR Journal of Electrical and Electronics Engineering
In a country like India, which largely depends on rainfall, many a times due to weather changes, the total rainfall in a particular area may be either insufficient, or ill-timed. In order to get the maximum yield, it is essential to supply the optimum quantity of water, and maintain correct timing of water. Also, the farmer is over burdened by the pressure of turning ON and OFF the water motor at correct intervals of time. This problem can be reduced with the help of an Autoswitch. This project
... is primarily designed to measure the voltage & current of single phase AC motors according to the limit set for the required motor specifications with additional circuitry to protect motor from over voltage, over current and dry run state. If the motor receives lot of current or voltage suddenly, the motor might get damaged. Hence, the circuit checks whether the input power is below the maximum power. In any case when a parameter exceeds the maximum operating limit, the circuit is automatically switched off to avoid any damage to the motor.