text.skipToContent text.skipToNavigation

MH4 Arrester (312 kV Rated, 10955 mm Creep Distance, AA Hardware)

by OHIO BRASS 

Catalog ID: MH4420BH312AA

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 Brown Housing
    Material Porcelain Housing
    Mounting Position Upright
    Type Station

    Dimensions

    Bolt Circle Diameter 254.00 mm
    Diameter - Single Bolt Hole(s) 14 mm
    Height 3902.2 mm
    Minimum Mounting Spacing on Center (Sea Level) - Phase to Ground 71.9 in (1825 mm)
    Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase 81.9 in (2080 mm)

    Electrical Ratings

    Creep and Leakage Distance 431.3 in (10955 mm)
    Duty Cycle 312 kV
    Frequency Rating 48-62 Hz
    MCOV 249.6 kV
    Maximum Discharge Voltage
    • 646 kV @ 1.5 kA
    • 671 kV @ 3 kA
    • 695 kV @ 5 kA
    • 729 kV @ 10 kA
    • 781 kV @ 20 kA
    • 859 kV @ 40 kA
    Maximum Switching Surge Protective Level @ 1000A 623 kV
    Maximum Switching Surge Protective Level @ 2000A 646 kV
    Maximum Switching Surge Protective Level @ 500A 606.0 kV
    Minimum Strike 3138.0 mm
    Pressure Relief Capability-Symmetrical rms (kA) 63
    Voltage - Line 420 kV
    Withstand Voltage - 60 Hz Wet 984 kV
    Withstand Voltage - Lightning Impulse 1715 kV
    Withstand Voltage - Switching Impulse 1532 kV

    Conductor Related

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

    Certifications and Compliance

    Industry Standard(s) IEC