CA01082E_Catalog 30

Products – Porcelain Housed Surge Arresters

MVN, IEEE Station Class MH3, IEC Class SM MH4, IEC Class SH

Overview – Porcelain housed surge arresters have been the standard in the industry for the last 70 years. The MVN, MH3 and MH4family of surge arresters continue in this proud tradition and they are available for use on system voltages from 2.4 kV to 500 kV (2.52 kV max to 550 kV max). They offer high mechanical strength compared to polymer housed station class surge arresters. Additionally, the MVN, MH3 and MH4 families (up to 353 kV MCOV) meet the requirements for High Seismic Performance per IEEE Standard 693-2005. Construction: • Porcelain housing for maximized mechanical performance • Single column of MOV discs and aluminum spacers (as required) centrally located within housing • Disc column held under high spring compression between ductile iron end fittings affixed to housing • Directional pressure relief system built integrated into end fittings At-a-Glance: • Operate at altitudes up to 12,000 feet/3,600 meters

• Designed to withstand winds up to 120 mph • High cantilever strength for windstorms or earthquakes

Page 44 | October 2023