High Gradient Zinc Oxide Varistor Metal Oxide Varistor ZnO Blocks ZnO Discs for Making Gis Lightning Arrester Surge Arrester Gas Insulated Switchgear
High Gradient Zinc Oxide Varistor Metal Oxide Varistor ZnO Blocks ZnO Discs for Making Gis Lightning Arrester Surge Arrester Gas Insulated Switchgear image
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Main Specification of high gradient Metal Oxide Varistor | |||||||||||
Type | Overall dimension (mm) |
D.C.reference voltage U1mA (reference current is 1mA)(kV) |
(UxkA/U1mA D C) Max. ratio of residual voltage (UxkA/U1mA D C) (at 8/20µs) |
Current impulse withstand capability | Recommend-ed rated voltage UR (kVrms) |
Recommended max. continuous operating voltage(MCOV)and peak value of resistive current under MCOV | Aging Coefficient | ||||
Outer diameter |
Inner diamter | Height | 4/10µs (kA) |
2ms (A) |
MCOV (kV) |
IR (µA) |
|||||
MOV60×22.5 | 60.0±1.0 | 22.5±1.0 | 6.3-8.1 | 1.66(at 10kA) | 100 | 400/500 | U1mA/√2 | UR×0.8 | 220 | <0.96 | |
MOV71×22.5 | 71.5±1.0 | 22.5±1.0 | 6.3-7.9 | 1.60(at 10kA) | 600/800 | 250 | |||||
MOV71/26×22.5 | 71.5±1.0 | 26.0±1.0 | 22.5±1.0 | 6.3-7.9 | 1.65(at 10kA) | 500/600 | 250 | ||||
MOV85/26×22.5 | 85.5±1.0 | 26.0±1.0 | 22.5±1.0 | 6.3-7.9 | 1.58(at 10kA) | 800/900 | 250 | ||||
MOV85×22.5 | 85.5±1.0 | 22.5±1.0 | 6.3-7.9 | 1.55(at 10kA) | 900/1000 | 320 | |||||
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