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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

Catalog Number

MH4420BH312AA

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