ROV20H470L-2

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Varistors, or voltage-dependent resistors, are electronic components that protect against voltage spikes by limiting the voltage passing through the device. They are used in a number of electrical applications to reduce the risk of damage caused by surges of electric current. The ROV20H470L-2 is a varistor manufactured by Littelfuse, a leading supplier of varistors and other surge protection products. This device is ideal for use in medium voltage applications and utilizes a unique design to provide superior moisture resistance as well as a wide range of operating voltages. This article will discuss the application field and working principle of the ROV20H470L-2.

Application Field

The ROV20H470L-2 is designed for medium voltage applications with a working voltage of 450 volts. It is capable of withstanding up to 1000 volts of alternating current (AC) and 2000 volts of direct current (DC), giving it a wide range of protection capabilities. The device is capable of suppressing a wide range of overvoltages, including low-energy transients, surge waves, and lightning strikes. It is also specially designed for harsh outdoor applications, as it features a superior moisture resistance that is not present in many other varistors. This moisture resistance also makes the ROV20H470L-2 ideal for use in humid environments. Additionally, the device has a ceramic body construction, which makes it highly resistant to corrosive materials and provides superior fire safety.

Working Principle

The ROV20H470L-2 is constructed from an array of metal oxide varistor elements connected in parallel. When an overvoltage occurs, an electric field is generated which forces the metal oxide particles inside the device to move. This movement changes the resistance of the device, allowing the current to flow through it. The specific resistance of the varistor is dependent on the amount of voltage passing through the device. The ROV20H470L-2 has a "L2" designation, which means that the device is designed to have a constant resistance throughout its operating range. This makes it ideal for providing consistent protection against surges and transients.

Conclusion

The ROV20H470L-2 is a metal oxide varistor designed for medium voltage applications. It has superior moisture resistance and is housed in a ceramic body which increases its fire safety. The device has a wide range of operating voltages and can provide protection against a wide range of overvoltages. The device utilizes an array of metal oxide elements which change the resistance of the device in response to an overvoltage, thereby providing protection against surges and transients. The device has a "L2" designation, meaning that it has a constant resistance across its operating range. This makes it ideal for providing constant protection against surges and transients in medium voltage applications.

The specific data is subject to PDF, and the above content is for reference