The purpose of time-delay relays is to start or stop currents from moving in coils and armatures, the moving parts of electrical mechanisms. They are designed to allow electrical circuits to release at certain times. These types of relays are triggered either by the opening and closing of a signal or by input currents.
Can a relay associated with time delay?
Time-delay relays can be constructed to delay armature motion on coil energization, de-energization, or both. Time-delay relay contacts must be specified not only as either normally-open or normally-closed but whether the delay operates in the direction of closing or in the direction of opening.
What is a delay on break relay?
also called Off Delay, Delay on Release, Delay on De-Energization. Power is continuously applied to the input terminals of the timer. Upon closure of a Normally Open (N.O.) external initiate switch, the load transfers immediately and remains transferred as long as the external initiate switch is closed.
How do you use a time delay relay?
Upon application of input voltage, the time delay relay is ready to accept a trigger. When the trigger is applied, the time delay (t1) begins. At the end of the time delay (t1), the output is energized. When the trigger is removed, the output contacts remain energized for the time delay (t2).Oct 17, 2019