V18ZS3P Circuit Protection

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Varistors, which are also known as Voltage Dependent Resistors (VDRs) or Metal Oxide Varistors (MOVs), are electronic components designed to provide protection against transient voltage surges. As technology advances, more and more products are being produced that utilize varistors for protection, and the V18ZS3P is no exception. The V18ZS3P is a three-phasal transient voltage surge suppressor designed to provide superior protection from lightning and other high-voltage environmental threats. In this article, we will explore the application field and working principle of the V18ZS3P in detail.

Application Field

The V18ZS3P is designed to provide superior protection against voltage transients for a wide range of applications, including household appliances, equipment cabinets, sensitive computer and networking equipment, power supplies, medical electronics, and other applications where protection from transient voltage surges is critical. The V18ZS3P is rated for use in both indoor and outdoor installations, making it a versatile option for a wide range of applications.

Working Principle

The V18ZS3P utilizes a unique combination of three active varistors to provide superior protection from voltage transients. The three varistors consist of two 70mm metal oxide disk (70/12kV) and one 300mm metal oxide disk (45/10kV) mounted on a single board. When exposed to a surge of voltage, the two smaller 70mm disks act as the primary surge-protection element, while the larger 300mm disk acts as the secondary and backup surge-protection element. The two smaller disks redirect energy away from sensitive electronics during the initial surge, while the larger disk helps dissipate more energy over time.

The V18ZS3P also includes a thermal fuse as an additional line of protection. This fuse works to ensure that the device does not become overloaded with voltage and will fail-safe if the current exceeds a certain point. The fuse helps to reduce potential risks to connected devices from thermal damage due to excessive current.

In addition, the V18ZS3P includes a built-in ground termination system. This system helps to reduce the risk of electric shock by allowing any excess current to be directed to the ground in an emergency situation. This feature helps to provide additional protection to connected devices from both thermal and shock hazards.

Overall, the V18ZS3P is a reliable surge protector capable of providing superior protection from transient voltage surges for a wide range of applications. It utilizes three active varistors and a thermal fuse to redirect surges away from critical electronics, while also providing thermal and shock protection. This makes it a reliable and versatile option for protecting electronic devices from both indoor and outdoor threats.

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