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MH4 Arrester (312 kV Rated, 8954 mm Creep Distance, AA Hardware)

By OHIO BRASS 

Catalog ID: MH4420GM312AA

By OHIO BRASS
Catalog ID:  MH4420GM312AA
IEC Station High / Class 4 Porcelain Housed Surge Arrester
  • IEC porcelain Station High class arrester
  • IEEE 693 High Performance Qualification
  • High quality MOV discs made in Wadsworth, Ohio since 1978
  • Arresters assembled in Aiken, South Carolina
  • 100% routine tested

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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 3406.9 mm
Minimum Mounting Spacing on Center (Sea Level) - Phase to Ground 72.1 in (1832 mm)
Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase 82.2 in (2088 mm)

Electrical Ratings

Creep and Leakage Distance 352.5 in (8954 mm)
Duty Cycle 312 kV
Frequency Rating 48-62 Hz
MCOV 249.6 kV
Maximum Discharge Voltage
  • 648 kV @ 1.5 kA
  • 674 kV @ 3 kA
  • 697 kV @ 5 kA
  • 732 kV @ 10 kA
  • 784 kV @ 20 kA
  • 863 kV @ 40 kA
Maximum Switching Surge Protective Level @ 1000A 626 kV
Maximum Switching Surge Protective Level @ 2000A 648 kV
Maximum Switching Surge Protective Level @ 500A 608.0 kV
Minimum Strike 2648.0 mm
Pressure Relief Capability-Symmetrical rms (kA) 63
Voltage - Line 420 kV
Withstand Voltage - 60 Hz Wet 800 kV
Withstand Voltage - Lightning Impulse 1459 kV
Withstand Voltage - Switching Impulse 1338 kV

Conductor Related

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

Certifications and Compliance

Industry Standard(s) IEC

Resources and Downloads

Videos

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