Made mostly of zinc oxide, the Metal Oxide Varistor or MOV is a semiconductor structure which makes it the most essential element for an arrester to work. This material is very durable and long lasting. It is the heart of a surge arrester.
Features
IEC / IEEE (ANSI) compliant
Customized diameter up to 125 mm and height from 2 mm up to 44 mm
High discharge current for 4/10 μs impulses
Repetitive charge transfer rating up to 8.0 C
Maximum energy absorption up to 3500 A on 2 ms impulses
High end gradient performance discs ranging from 200 V/mm up to 550 V/mm
Glass passivated collar
Excellent thermal recovery capability
Low resistive power dissipation
Available for special applications such as under oil for transformer windings protection, DC application and under gas (SF6) for Gas Insulated Switchgear (GIS) with high gradient blocks.
Benefits
Small size of MOV with better electrical performance
Glass passivated collar enhancing energy absorption and high current discharge
E36 series 36 mm diameter to withstand 100 kA for 4/10 μs impulses
E41 series 41 mm diameter to withstand 0.4 C repetitive charge transfer
Reliable ageing performance
Low resistive power dissipation at AC application
DC ageing with dispolarity
Maximum energy absorption up to 3500 A on 2 ms impulses
Gradient performance of 220 V/mm for standard application
350 V/mm for Gas Insulated Switchgear (GIS) application, upon request
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