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

Brand:

OHIO BRASS

Catalog ID:

MH4420BH312AA

IEC Station High / Porcelain Housed Surge Arrester

IEC Porcelain station class arresters for substation protection

  • 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

Product details

General

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

Dimensions

Bolt Circle Diameter
254 mm
Diameter - Single Bolt Hole(s)
14 mm
Height
3902.2 mm
Minimum Mounting Spacing on Center (Sea Level) - Phase to
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
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 kV
MCOV
249.6 kV
Minimum Strike
3138 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