Overload Relay Working Animation

S bharadwaj reddy december 12 2018 may 7 2020.
Overload relay working animation. Rating kw ac 3 conventional thermal current ith ie a ac 1 at 40 c type 220 v 230 v 380 v 400 v 660 v 690 v 1000 v 185 55 90 140 108 337 dilm185a 225 70 110 150 108 356 dilm225a. Thermal motor protection relays contain three bimetal strips together with a trip mechanism in a housing made of insulating material. Hello friends welcome in learn eee. Working principle of thermal relay.
The basic working principle of thermal relay is that when a bimetallic strip is heated up by a heating coil carrying over current of the system it bends and makes normally open contacts. Construction of thermal relay. Overload relay working animation. Overload relay working principle thermal overload relay thermal overload relay construction working and application.
When a voltage is applied to the coil a current passes through it and this creates a magnetic circuit which includes the core armature and the yoke. Besides its cost thermal overload relays can increase the life span. Thermal overload is widely used for. The bimetal strips are heated by the motor current causing them to bend and activating the trip mechanism after a certain travel which depends on the current setting of the relay.
The unit comes with a class 10 trip as standard. Contactors dil overload relays z eaton wiring manual 06 11 5 12 5 5 rated operating current ie a ac 3 at 400 v max. Overload relays are electrical devices designed to offer reliable protection for motors in the event of overload or phase failure. Animation of electromagnetic relay.
Bimetal overload relay the heater elements as an integral part of the design. A thermal relay works depending upon the above mentioned property of metals.