H3M-AC120-D

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Time Delay Relays (TDRs) are a type of electrical relay designed to operate at a pre-defined time interval. They are usually used to create a delay in the activation of a system or process, allowing it to start up or shut down at an appropriate time. The H3M-AC120-D is one such time delay relay, and it has several applications and a working principle suitable for a variety of time delay operation modes.

H3M-AC120-D Applications

The H3M-AC120-D time delay relay is suitable for multiple time delay applications, including half bank (opening), short bank (closing), single-bank (cyclic), and totalizing (cycle) operations. Additionally, it can be used in both on-delay and off-delay mode, along with a selection of time ranges from 0.1 seconds to 10 hours.

As an example, it can be used as an off-delay timer in an industrial insulation monitor to prevent over-voltage or under-voltage events. It can also be used as an on/off timer in a sequencer for controlling operating sequences. Finally, the H3M-AC120-D can even be interfaced with a remote control panel to enable remote programming and control of time delay operations.

H3M-AC120-D Working Principle

The H3M-AC120-D time delay relay has a built-in adjustable knob used for setting a desired time delay. The knob is turnable in both clockwise and counterclockwise directions, allowing a time range adjustment from 0.1 seconds to 10 hours. The time delay will begin after a signal is applied to one of the two input terminals.

Once the time delay interval has been set, the relay will wait for a signal to be applied to the input terminals. This signal will then trigger the relay, which will in turn cause the settings on the knob to take effect. The time delay will then begin and the output will be activated when the time delay interval has elapsed. Once the output is activated, it will remain in this state until the signal going to the input terminals is either removed or reversed.

The H3M-AC120-D time delay relay is designed to be low-cost and reliable. It requires less wiring than traditional mechanical timers, and its adjustable time delay settings allow for greater flexibility in applications. Furthermore, the built-in adjustable knob allows for easy and quick adjustments to the time delay setting without the need for mechanical adjustments.

Conclusion

The H3M-AC120-D is a versatile and affordable time delay relay suitable for many time delay applications, including those involving on and off delay timing. Its adjustable knob allows for a wide range of time intervals, from 0.1 seconds to 10 hours. Furthermore, its design is simple and cost-effective, making it suitable for applications that require both reliability and cost savings. In short, the H3M-AC120-D time delay relay provides an effective solution for a variety of time delay applications.

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