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MH4 Arrester (420 kV Rated, 12161 mm Creep Distance, AA Hardware)

by OHIO BRASS 

Catalog ID: MH4550GM420AA

IEC Station High / Class 4 Porcelain Housed Surge Arrester

  • To learn more about selecting the right Substation Arrester, visit our blog here.
  • Product Details

    General

    Application Substation
    Color Gray Housing
    Material Porcelain Housing
    Mounting Position Upright
    Type Station

    Dimensions

    Bolt Circle Diameter 254.00 mm
    Diameter - Single Bolt Hole(s) 14 mm
    Height 4549.9 mm
    Minimum Mounting Spacing on Center (Sea Level) - Phase to Ground 97.8 in (2485 mm)
    Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase 111.3 in (2826 mm)

    Electrical Ratings

    Creep and Leakage Distance 478.8 in (12161 mm)
    Duty Cycle 420 kV
    Frequency Rating 48-62 Hz
    MCOV 336 kV
    Maximum Discharge Voltage
    • 873 kV @ 1.5 kA
    • 908 kV @ 3 kA
    • 939 kV @ 5 kA
    • 986 kV @ 10 kA
    • 1056 kV @ 20 kA
    • 1162 kV @ 40 kA
    Maximum Switching Surge Protective Level @ 1000A 843 kV
    Maximum Switching Surge Protective Level @ 2000A 873 kV
    Maximum Switching Surge Protective Level @ 500A 819.0 kV
    Minimum Strike 3588.0 mm
    Pressure Relief Capability-Symmetrical rms (kA) 63
    Voltage - Line 550 kV
    Withstand Voltage - 60 Hz Wet 1094 kV
    Withstand Voltage - Lightning Impulse 1968 kV
    Withstand Voltage - Switching Impulse 1806 kV

    Conductor Related

    Conductor Type Cu/Al (AWG #4 - 500 MCM)

    Certifications and Compliance

    Industry Standard(s) IEC