![]() ![]() Contacts on electromechanical relays can be replaced, whereas entire SSR must be replaced when any part becomes defective. They require lesser voltage for switching and turn on and off faster because there are no physical parts to move.Īlthough the absence of contacts and moving parts means that SSR are not subject to arcing and do not wear out. SSR do not have to energize a coil or open contacts. SSR switch current using non-moving electronic devices such as silicon controlled rectifiers. Functions performed by heavy-duty equipment often need switching capabilities of electromechanical relays. Solid-state relays (SSR) have no contacts and switching is totally electronic. In electromechanical relays (EMR), contacts are opened or closed using magnets. In addition, these are also widely used to switch starting coils, heating elements, pilot lights and audible alarms. Protective relays can prevent equipment damage by detecting electrical abnormalities, including overcurrent, undercurrent, overloads and reverse currents. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |