Power transformers and distribution transformers operate crucial roles in the electrical grid, yet they differ significantly in their functions and characteristics. Power transformers are designed to handle high voltages at a large scale, often transmitting electricity over long distances between generating stations and substations. In contrast,
Relay Construction and Application Principles
Relays are electromechanical instruments that utilize an electromagnet to switch an electrical path. The basic design of a relay comprises a coil, armature, contacts, and a spring mechanism. When current flows through the coil, it creates a magnetic field which draws the armature, causing the contacts to connect. This action allows for the control