V480LS7P

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Varistors, also called as voltage dependent resistors (VDR) or metal oxide varistors (MOV), are employed as surge protection devices in electrical systems. Examples include power line conditioners, pulse shaping circuits, and electromagnetic interference (EMI) protection circuits. As a critical component in these systems, the V480LS7P Varistor was designed to ensure the continuous reliable operation of the power system.

V480LS7P is a silicon carbide-based non-linear resistor with extremely high surge handling capability. It is capable of withstanding transient voltages from 30 to 480 volts in 60°C ambient temperatures and has an energy rating of 30 Joules per device. The device is designed with a self-healing metallized zone formed of silicon carbide and is encapsulated in a ceramic body for protection against mechanical stress.

The V480LS7P varistor is designed for use in power line conditioners, power strips, and other electrical systems requiring surge protection with a variety of clamping levels. The device has two electrically connected terminals that act as the anode and cathode to limit the voltage. When the voltage between the two terminals exceeds that of the clamping voltage, the V480LS7P varistor breaks down and will conduct current up to a designated amperage value. This action will protect other components in the system from the high voltage surge.

The device also has a "self-healing" feature that is triggered when the surge voltage drops below the clamping voltage. This feature enables the V480LS7P varistor to automatically reset and restore the system to its original state without the need for manual intervention.

In terms of application field, the V480LS7P Varistor can be used in various types of equipment including security systems, industrial machinery, household appliances, medical equipment, and telecom electronics. The device can also be used in utility systems such as lightning protection systems, UPS systems, and line conditioners.

The working principle of the V480LS7P Varistor is based on the Mott-Schottky effect, a phenomenon associated with the injection of carriers into material. When the voltage exceeds the clamping voltage of the varistor, electric carriers are injected into the semiconductor material, resulting in an increase in electrical conductivity. This increase in electrical conductivity increases the flow of current to the load and helps protect the system from surges.

In summary, the V480LS7P varistor is an efficient and reliable surge protection device for a variety of applications. It is capable of protecting sensitive electronic components from high voltage transients and has the added benefit of self-healing, meaning it can restore itself without manual intervention.

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