What are the main types of relays?
The main types of relays include electromechanical relays, solid state relays, magnetic latching relays, thermal relays, reed relays, differential relays, and distance relays.
How do solid state relays differ from electromechanical relays?
Solid state relays use semiconductor devices for switching without moving parts, offering faster response and longer operational life compared to electromechanical relays, which rely on mechanical movement.
What are the applications of magnetic latching relays?
Magnetic latching relays are used in energy-efficient control systems where maintaining the contact position without continuous power is required.
How do thermal relays protect motors?
Thermal relays protect motors by disconnecting the power supply when excessive heat is detected, preventing damage from overload conditions.
What is a differential relay used for?
A differential relay is used for protecting electrical equipment by detecting differences in current between two points, indicating a fault.