Learn Electrical Engineering
An induction disk relay is a variety of electromagnetic relays. It belongs to one of the most primitive forms of conventional electromechanical protection relays. Its basic construction and working principle are quite simple. Basic Construction of Induction Disk Relay There is an electromagnet. The system current or a current proportional to the system current flows … Read more
An electromagnetic attraction type relay is the simplest form of protection relay. The relay uses an electromagnet to perform its function. Its basic construction consists of a magnetic core made of laminated, cold-rolled, grain-oriented silicon steel or laminated steel. Lamination reduces eddy current losses, while the cold-rolled structure of the iron minimizes hysteresis loss. We … Read more
An electrical protection relay is an intermediate device that bridges the function of a current transformer or a similar fault-detecting device to one or more circuit breakers. In other words, the relay connects the fault-sensing device with the fault-clearing device. Essentially, a relay has a simple magnetic coil that receives current from the current transformer. … Read more