MH4 Arrester (312 kV Rated, 10955 mm Creep , AA Hardware)
Brand: OHIO BRASS
Catalog ID: MH4420BH312AA
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
MH4420BH312AA
Color
Brown Housing
Material
Porcelain Housing
Mounting Position
Upright
Product Type
MH4
Type
Station
Dimensions
Bolt Circle Diameter
254 mm
Depth
60 in
Diameter - Single Bolt Hole(s)
14 mm
Height
153.6 in
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)
Width
60 in
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
Configuration
Mounting Position
Upright