High Gradient MOV (Metal Oxide Varistor) GIS Arresters are surge arresters designed specifically to protect sensitive GIS (Gas Insulated Switchgear) equipment from power surges. The arresters contain a unique combination of metal oxide varistors (MOVs) that are specifically tailored to the application. The MOVs are configured in a large variety of series and parallel arrangements to provide the optimal clamping voltage to protect against a wide range of surge voltages. High Gradient MOV GIS Arresters are typically used in industrial and commercial applications where the power system is sensitive to damage from lightning strikes, power outages, and other power system disturbances.
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High impedance: High gradient MOV GIS arresters provide a high impedance path to the ground, which can prevent the lightning surge from entering the system.
Low leakage current: High gradient MOV GIS arresters have very low leakage current, which ensures the safety of the system.
Fast response time: High gradient MOV GIS arresters can respond quickly to lightning surge and protect the system from damage.
Reliability: High gradient MOV GIS arresters are highly reliable and can provide long-term protection for the electrical system.
The key element of a high gradient MOV GIS arrester is its MOV element. This MOV element consists of a metal oxide varistor (MOV) and a gas-insulated switchgear (GIS). The MOV element works by absorbing and diverting overvoltage surges away from the protected equipment. The metal oxide varistor purpose is clear, its GIS element is responsible for providing a safe path to ground for the electrical surge so that the energy is discharged safely.
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