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    How time relay works


    The time relay is a control device that realizes delay control by using electromagnetic principle or mechanical principle.It is available in a variety of types, including air damping, electric and electronic.Air-damped time relays are often used in AC circuits, which use the principle of air throttling through small holes to obtain delayed action.When the coil is energized (voltage specifications are ac380v, ac220v or dc220v, dc24v, etc.), the armature and the pallet are attracted by the core and instantaneously moved down, so that the instantaneous action contact is turned on or off.

    After a certain period of time, the piston rod is lowered to a certain position, and the delay contact is actuated by the lever, so that the breaking contact is opened and the moving contact is closed.From the energization of the coil to the completion of the delay contact, this time is the delay time of the relay.The length of the delay time can be changed by adjusting the size of the air inlet of the air chamber with a screw.


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