Timer Switch for Motor
Letop Timer Switch for Motor
Whenever the motor starts, it generates an initial inrush current. If several motors are started at the same time, these combined inrush currents can cause line disturbances throughout the system and cause disturbance tripping of overcurrent devices.
If two or more motors are controlled from the same button station, it may be necessary to provide a time interval between their activations. One of the ways we can do this is by using a timed relay.
Timers are similar in structure to control relays in that they have a low voltage armature and coil that open or close a set of contacts when energized. The timer features the addition of some kind of delay mechanism that prevents the auxiliary contacts from changing state for a preset amount of time.
Featured Timer Switch for Motor
How the time switch works to control the motor
Timers switch for moto come in two classes: On-delay timers switch and off-delay timers switch.
One Delay Time Switch
These are typically used in circuits where we may want to start both motors from the same button station, but with a slight delay to reduce line disturbances due to inrush currents. The timed contacts of the delay timer can be normally open timed closed (NOTC), or normally closed timed open (NCTO).
Delay timers delay their action when the coils are energized, and revert to their original state immediately when power is removed. Some timers have momentary contacts in addition to timed contacts.
Off Delay Time Switch
These are often used in circuits where we may want to stop both motors from the same button station, but allow the second motor to run for an extra period of time. This arrangement is commonly used in furnace HVAC systems and conveyor circuits. The timing contacts of the off-delay timer can be normally open, timed open (NOTO), or normally closed, timed closed (NCTC).
Off-delay timer changes its original state immediately upon power up. and delay their action when the coils are de-energized. Some timers have momentary contacts in addition to timed contacts.
Timer Switch for Motor FAQ
No, actually, the time swicth is mainly to used to turn on/off the motor automatically.
Yes but only through a 3 phase contactor.
Yes, the astronomical time switch automatically turns ON/OFF at the preset longitude and latitude, time zone. You don’t need to adjust your timer to keep up with changing sunrise/sunset times.
In case power failure, its doing his working in background. Although no power to appliance, most of the timers have battery backup.
It works as per the clock. So for example you have set the timer for 5.00 am to 7.00 am . The timer will switch on at 5.00 am . Suppose there is a power cut from 6.00 am to 6.30am , the timer will stop at 6.00 am & resume from 6.30am & run up to 7am . Totally the timer will run for 1 hour & 30 minutes.
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