8D721W72AN

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In modern industrial, 8D721W72AN has become an indispensable part of numerous production lines. It is an unsealed solid state power controller, which can control three-phase lines of AC circuits up to 600V, and 120A in load current. 8D721W72AN is provided with the features of soft start, soft stop, electrical shock protection and overload protection.

Application Field

8D721W72AN finds wide applications in modern industrial automation, especially in manufacturing and packaging industry. It is used to control phase changers, rectifiers, converters and three-phase motors, as well as other AC devices. It can be used for intelligent control of multiple lines and equipments in manufacturing process. 8D721W72AN can also be used for transformation in mining and petroleum industry, as well as for protection against short circuits and drips.

Working Principle

8D721W72AN works with the main components of a full bridge, a load terminal, a control transistor and a safe resistor. It works on the principle that when a voltage or short circuit appears, the control transistor will be turned off, thus cutting off the power supply. The main working principle of 8D721W72AN is to detect that a voltage has been reached (whatever the voltage is), and then turning off the transistor. When the voltage drops to a certain level, the transistor is turned back on. 8D721W72AN can also detect short circuits, and cut off the power in such cases.

The external circuitry is also necessary in order to ensure the correct operation of the system. It consists of a capacitor and a voltage divider to guarantee the starting and stopping of the circuit. The distance between the start and the end is the basic parameter of the safety circuit. The external components work together with 8D721W72AN to regulate or kill the power when it is not required.

8D721W72AN is an efficient and lightweight configuration that can be used to control multiple electric devices. There are many advantages of using 8D721W72AN, such as its high shock resistance, high overload capacity, flexibility and adjustable control features. The other advantages include simple design, low costs, and fewer parts.

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