MOV Block for Substation Arrester

To safeguard electrical equipment from transient overvoltages, power substations frequently employ metal-oxide varistor (MOV) surge arresters. MOVs are made to deflect excess current away from the device they are safeguarding in order to limit the voltage to a safe level.

The Benefits of Using MOV Block Substation Arresters

1

High-performance protection: MOV substation arresters provide reliable protection against transient overvoltages caused by lightning and other power system disturbances.

2

Long-term reliability: MOV substation arresters feature a robust design that ensures a long service life, helping to reduce the need for frequent replacement.

3

Suitable for a wide range of applications: MOV substation arresters are designed to be suitable for use in both indoor and outdoor applications, making them versatile and cost-effective.

4

Low maintenance: MOV substation arresters require minimal maintenance, helping to reduce the cost of ownership.

The Impact of Lightning on MOV Block Substation Arresters

Lightning is one of the most common and destructive natural phenomena that can have a catastrophic effect on substations and their components. This is especially true for MOV (Metal-Oxide Varistor) substation arresters, which are designed to protect electrical equipment from the high voltages caused by lightning strikes. When lightning strikes a MOV arrester, it can cause a surge of current that can damage the arrester and other components in the substation. This can lead to power outages, equipment damage, and even fire.

To mitigate the effects of lightning on MOV substation arresters, various strategies can be implemented. These strategies include the use of surge protective devices (SPDs) to limit the current and voltage surges caused by lightning and the installation of lightning rods to direct the lightning away from the substation. Additionally, MOV substation arresters can be designed with higher levels of insulation to protect against the high voltage of lightning strikes.

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