TRDU12D1

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Time Delay Relays

Time delay relays are an important part of automation in industrial settings. TRDU12D1 time delay relay is one such relay, designed and built to provide an adjustable time period before an associated circuit is energized. These are especially useful in controlling the operation of motor control circuits and switching between multiple sources.

The TRDU12D1 time delay relay consists of a specialized electronic circuit, LEDs, pushbuttons, and a power input. It has an adjustable time delay from 0.1 to 30 sec. It also has two inputs, one for supply voltage and one for a control contact, and two outputs. The first output is on when the contact is energized, and the second output is energized after the time delay. It also has a voltage-sensing function for detecting an over-voltage condition.

The application field of the TRDU12D1 is quite wide. It can be used to control switching between multiple sources, to control motor control circuits, to monitor ove-voltage conditions, and to start/stop timers. It is applicable in many industries such as water filtration, sewage, gas/oil, automotive, electrical, and refrigeration.

To understand the working principle of the TRDU12D1 time delay relay, we must first understand how it works. The device consists of three parts. First, an electronic circuit is employed to provide an adjustable time period before the relay is energized. This circuit is able to adjust the time delay of the relay electrically. Secondly, two contacts are used to provide the power and control inputs to the circuit. Finally, the relay is energized to control an associated circuit. An overload protection circuit is incorporated to protect the device from damages caused by an over voltage situation.

The circuit is designed in such a way that the time delay can be adjusted without the need of additional physical parts. This is achieved by changing the impedance of the relay contacts using a capacitor. When the voltage is applied to the relay contacts, the capacitor starts to charge up and the time delay varies depending on the capacitance of the capacitor. Once the capacitor is fully charged, the relay is energized and the associated circuit is operated.

In conclusion, the TRDU12D1 time delay relay is a versatile and reliable delay relay for applications in a variety of fields. It provides adjustable time delays from 0.1 to 30 seconds and has a voltage-sensing function for detecting an overvoltage condition. Furthermore, it can be used to control switching between multiple sources, to control motor control circuits, to start/stop timers, and to monitor over-voltage conditions. These features make TRDU12D1 one of the most popular delay relays in the market.

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