MH4 Arrester (420 kV Rated, 12161 mm Creep , AA Hardware)
Brand: OHIO BRASS
Catalog ID: MH4550GM420AA
IEC Station High / High Quality Porcelain Housed Hollow Core 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
General
Application
Substation
Catalog Number
MH4550GM420AA
Color
Gray Housing
Material
Porcelain Housing
Mounting Position
Upright
Product Type
MH4
Type
Station
Dimensions
Bolt Circle Diameter
254 mm
Depth
80 in
Diameter - Single Bolt Hole(s)
14 mm
Height
179.1 in
Minimum Mounting Spacing on Center (Sea Level) - Phase to
97.8 in (2485 mm)
Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase
111.3 in (2826 mm)
Width
80 in
Electrical Ratings
Creep and Leakage Distance
478.8 in (12161 mm)
Duty Cycle
420 kV
Frequency Rating
48-62 Hz
Maximum Discharge Voltage
- 873 kV @ 1.5 kA
- 908 kV @ 3 kA
- 939 kV @ 5 kA
- 986 kV @ 10 kA
- 1056 kV @ 20 kA
- 1162 kV @ 40 kA
Maximum Switching Surge Protective Level @ 1000A
843 kV
Maximum Switching Surge Protective Level @ 2000A
873 kV
Maximum Switching Surge Protective Level @ 500A
819 kV
MCOV
336 kV
Minimum Strike
3588 mm
Pressure Relief Capability-Symmetrical rms (kA)
63
Voltage - Line
550 kV
Withstand Voltage - 60 Hz Wet
1094 kV
Withstand Voltage - Lightning Impulse
1968 kV
Withstand Voltage - Switching Impulse
1806 kV
Conductor Related
Conductor Type
Cu/Al (AWG #4 - 500 MCM)
Certifications And Compliance
Industry Standard(s)
IEC
Configuration
Mounting Position
Upright