The Type PVI & PVN arresters contain the same high-quality metal-oxide varistors used in other Ohio Brass DynaVar® arresters which have operated successfully since 1981. They have all the MOV dvantages such as high temporary overvoltage capability, contamination resistance, improved surge-duty capability and excellent protective characteristics.

In the unlikely event of arrester failure, violent fragmentation of porcelain is eliminated. Instead, the higher available fault currents may cause splits or tears in the polymer rubber housing while the internal fiberglass wrap restrains the valve elements. Weight is greatly reduced compared to conventional porcelain- housed designs.

Installation is simplified because with the reduced weight, a patented, single housing design can be utilized for all arrester voltage ratings. The small diameter line end terminal hardware permits closer phase-to-phase and phase-to-ground spacings useful in modern compact substation designs and on mobile transformer applications.