MH4 Arrester (420 kV Rated, 12161 mm Creep Distance, AA Hardware)
Brand: OHIO BRASS
Catalog ID: MH4550GM420AA
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
MH4550GM420AA
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
4549.9 mm
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)
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
Resources and downloads
Installation Manuals
ISO Certificates
Sales Drawings
Media
Videos
