Overview
Standard SVN, PH3 and PH4 station class arresters are available for use on system voltages from 22.86 kV to 500 kV (24 kV max to 550 kV max). They offer an attractive alternative to porcelain housed arresters (MVN family), without sacrificing any reduction in protective capability or energy handling capability, for cases where the high mechanical strength of porcelain is not required and lower weight would be an advantage. Additionally, the SVN, PH3 and PH4 families (up to 230kV MCOV) meet the requirements for High Seismic Performance per IEEE Standard 693-2018.

SVNH arresters are available for use on system voltages from 161 to 500 kV. These arresters offer a high strength alternative to the SVN arresters, without sacrificing protective capability or energy handling capability.

Construction:
    "Tube" design, using fiberglass reinforced epoxy tube overmolded with silicone rubber weathershed housing
    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:
   High leakage distance designs (standard designs at least 28% more leakage distance than IEEE C62.11 minimum); higher leakage distance designs available for high pollution areas
    Up to 47% lighter than comparable porcelain arresters
    Resilient polymer housing resistant to mechanical damage
    Tested to 63kA rated short circuit current; can handle reclosures with no concern for housing fragmentation

Technology parameters