MH4 Arrester (120 kV Rated, 3207 mm Creep Distance, AA Hardware)
Brand: OHIO BRASS
Catalog ID: MH4145BM120AA
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
MH4145BM120AA
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
1286 mm
Minimum Mounting Spacing on Center (Sea Level) - Phase to
26.6 in (675 mm)
Minimum Mounting Spacing on Center (Sea Level)- Phase to Phase
30.7 in (780 mm)
Electrical Ratings
Creep and Leakage Distance
126.3 in (3207 mm)
Duty Cycle
120 kV
Frequency Rating
48-62 Hz
Maximum Discharge Voltage
- 250 kV @ 1.5 kA
- 260 kV @ 3 kA
- 269 kV @ 5 kA
- 282 kV @ 10 kA
- 302 kV @ 20 kA
- 333 kV @ 40 kA
Maximum Switching Surge Protective Level @ 1000A
241 kV
Maximum Switching Surge Protective Level @ 2000A
250 kV
Maximum Switching Surge Protective Level @ 500A
235 kV
MCOV
96 kV
Minimum Strike
940 mm
Pressure Relief Capability-Symmetrical rms (kA)
63
Voltage - Line
145 kV
Withstand Voltage - 60 Hz Wet
294 kV
Withstand Voltage - Lightning Impulse
509 kV
Withstand Voltage - Switching Impulse
468 kV
Conductor Related
Conductor Type
Cu/Al (AWG #4 - 500 MCM)
Certifications And Compliance
Industry Standard(s)
IEC
Configuration
Mounting Position
Upright