MH4 Arrester (336 kV Rated, 9621 mm Creep Distance, AA Hardware)
Brand: OHIO BRASS
Catalog ID: MH4420GM336AA
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
General
Application
Substation
Catalog Number
MH4420GM336AA
Color
Gray Housing
Material
Porcelain Housing
Mounting Position
Upright
Type
Station
Dimensions
Bolt Circle Diameter
254 mm
Diameter - Single Bolt Hole(s)
14 mm
Height
3572 mm
Minimum Mounting Spacing on Center (Sea Level) - Phase to
77.9 in (1978 mm)
Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase
88.7 in (2253 mm)
Electrical Ratings
Creep and Leakage Distance
378.8 in (9621 mm)
Duty Cycle
336 kV
Frequency Rating
48-62 Hz
Maximum Discharge Voltage
- 699 kV @ 1.5 kA
- 726 kV @ 3 kA
- 752 kV @ 5 kA
- 789 kV @ 10 kA
- 845 kV @ 20 kA
- 930 kV @ 40 kA
Maximum Switching Surge Protective Level @ 1000A
674 kV
Maximum Switching Surge Protective Level @ 2000A
699 kV
Maximum Switching Surge Protective Level @ 500A
655 kV
MCOV
268.8 kV
Minimum Strike
2820 mm
Pressure Relief Capability-Symmetrical rms (kA)
63
Voltage - Line
420 kV
Withstand Voltage - 60 Hz Wet
882 kV
Withstand Voltage - Lightning Impulse
1527 kV
Withstand Voltage - Switching Impulse
1404 kV
Conductor Related
Conductor Type
Cu/Al (AWG #4 - 500 MCM)
Certifications And Compliance
Industry Standard(s)
IEC
Configuration
Mounting Position
Upright