A motor protection system is a set of devices and methods that protect an electric motor from various faults and damages. An electric motor is a crucial component of many industrial and domestic applications, ranging from small appliances to large machines. Therefore, it is important to ensure the proper functioning and safety of the motor and its circuit.In this article, we will discuss the types of motor faults, the types of motor protection devices, and how to select them according to the Nat

1). What is the use of the negative phase sequence relay?The negative sequence relays protect generators and motors from imbalanced loading that might result from phase-to-phase faults.2). What is the differential relay’s operating principle?The phasor difference of two (or)more similar electrical variables needs to exceed a specific threshold for a differential relay to activate.3). Why is distance protection selected as primary protection for thetransmission lines over overcurrent protection?F