CA01082E_Catalog 30

Products – Polymer Housed Surge Arresters – SVN, PH3 and PH4

SVN, IEEE Station Class PH3, IEC Class SM PH4, IEC Class SH

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. 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

Page 20 | October 2023