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Varistor
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Metal Oxide Varistor Degradation It is well-known that MOVs( metal oxide varistor) experience degradation due to single and multiple current impulses. The test results documented in Mardira, Saha and Sutton show that MOVs can be degraded from an 8/20us surge current at 1.5 times the rated MOV surge...
Hazards of MOV While a MOV(metal oxide varistor) is designed to conduct significant power for very short durations (~8/20 microseconds), such as caused by lightning strikes, it typically does not have the capacity to conduct sustained energy. Under normal utility voltage conditions, this is not a pr...
Metal Oxide Varistor Introduction Metal Oxide Varistor (MOV) is the most common type of varistor. This contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides (such as small amounts of bismuth, cobalt, manganese) sandwiched between two metal plates (the electrodes). The boun...