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0297003. WXUL Application Field and Working Principle

WXUL (Wireless X-ray Under Layer) is an electrical safety device used to protect consumers from fire hazards. It is made up of a heat-sensitive wire that acts as a fuse when activated by an excessive current. While simple in concept, WXULs are designed to provide both safety and reliability in extreme operating conditions.

Application Field

WXULs are designed primarily for use in medical applications, such as radiography, computed tomography (CT), and cardiac catheterization. They are ideal for such applications because they are able to detect and interrupt the power supply before an electrical short circuit, thereby preventing the potential for an electrical fire due to overheating. Additionally, WXULs are designed to remain stable and reliable in temperatures up to 1000°C, making them ideal for use in high-temperature medical environments.

WXULs are also used in consumer products, such as cars, boats, and airplanes. In these applications, they provide protection from power surges and short circuits that can lead to costly damage. Additionally, WXULs are becoming increasingly popular in industrial applications, replacing traditional fuses due to their higher reliability and increased lifetime.

Working Principle

A WXUL consists of two or more wires of different cross-sectional area wound around a core. When the current passing through the conductive core exceeds a certain threshold value, the wire heats up and expands, thus breaking the circuit and reducing the current flow. This protects downstream and upstream components from the effects of overcurrent conditions.

To ensure thermally stable operation, WXULs are designed in such a way that the wire used in the construction of the device has a much higher thermal resistance than the insulation around the conductive core, thus limiting the temperature of the device to a safe level and preventing overheating.

To ensure the device operates reliably, the wire must be carefully selected and the cross-sectional area of the wire must be calculated to ensure that the device will break the circuit before the wires burn out. This calculation is known as the WXUL rating and is determined by the current rating of the device and the amount of heat energy required to break the circuit.

Conclusion

WXULs are an important and versatile electrical safety device used in medical and consumer applications, and they are becoming increasingly popular in industrial applications as well. WXULs are designed to break the circuit when overcurrent conditions occur, thus protecting downstream and upstream components from the effects of overheating. By carefully selecting the wire and calculating the WXUL rating, the device can be designed to provide safe and reliable operation.

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