H3DT-HDS AC200-240V

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Time Delay Relays are widely used in various automation applications and are generally a versatile and cost-effective option for controlling electrical and electronic activities. In this article, we will explore the application field and working principle of the H3DT-HDS AC200-240V that falls under the umbrella of Time Delay Relays.

Application Field

The H3DT-HDS AC200-240V is a digital delay relay that is designed specifically to automate certain functions such as lighting, controlling motors, and controlling other devices. It features an adjustable delay range from 0.1 to 100 seconds, and it can be easily programmed via its front key. Furthermore, this Time Delay Relay also provides input voltage protection that is designed to ensure reliability and safety.

The H3DT-HDS AC200-240V is especially well-suited for applications that require strict timing accuracy. Examples of such applications include controlling valve cycles, preventing run-away motors, controlling pre-heating of AC motors, and operating suction hoists. This versatile Time Delay Relay can also be used for less critical applications such as automatic door openers, agricultural machinery, parking gate systems, and street lamps.

Working Principle

The H3DT-HDS AC200-240V features an LCD display that displays real-time data, and it operates on an electronic cell and coil adjustable delay mechanism. It is an electromechanical device with an on/off switch that is activated at pre-determined intervals. When the power is on, the relay creates a magnetic field that causes a control switch to open, closing the circuit after the set delay time and turning a device off.

When the power is off and the switch closes, the relay sends an electrical pulse via its contact points to a connected device, opening its switch and initiating its cycle. When the cycle is complete, the device’s switch closes and the cycle repeats according to the set delay time. The delay time of this Time Delay Relay is controlled by adjusting the coil voltage, which is set manually on the device.

The H3DT-HDS AC200-240V Time Delay Relay also features various input protection functions such as over voltage, under voltage, over current, short circuit, and temperature protection, as well as an over frequency protection for the device itself. Furthermore, it is designed with a highly durable metal shell that is waterproof and dustproof, making it suitable for various applications.

Conclusion

The H3DT-HDS AC200-240V digital time delay relay is a versatile and cost-effective option that is suitable for various automation applications. Its adjustable delay range, LCD display, and protective functions make it an ideal choice for applications that require precise timing accuracy. With its durable construction, this Time Delay Relay is sure to withstand various harsh conditions.

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