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72.5KV station post insulators can be tested according to ANSI, IEC, BS international standards. 72.5KV station post insulators tests have:◆ Mechanical strength tests◆ Low frequency dry flashover voltage tests◆ Low frequency wet flashover voltage tests◆ Cantilever strength tests◆ Lightning impulse voltage tests◆ Lightning impulse withstand voltage tests72.5KV station post insulators technical parameters: Type FZSW4-72.5/4 Rating voltage, kV 72.5 System normal voltage, KV 66 Rated mechanical Load Bending, KN 4 Torsion strength, KN.m 2.0 Height, mm 730 Insulating distance, mm 600 Minimum nominal creepage distance, mm 2350 1 min power frequency withstand voltage, (virtual value) ≥, KV dry 165 wet 140 Lightning Impulse withstand voltage(peak value) ≥, KV 325 Top end fitting insulating dimension, mm Pitch circle dia 140 Dia hole M12 Bottom end fitting insulating dimension, mm Length of symmetry hole center 140 Dia hole M12
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