Balestro's Station Class Surge Arresters have been designed to have an excellent performance regarding the protection of electric power substations and industrial power systems against overvoltages, both indoor and outdoor use.

The Balestro's polymeric station class surge arresters offer optimized protection characteristics, great mechanical resistance and high resistance to weather ageing, due to its silicone rubber housing and the sealing system of the active part which prevents the humidity penetration, even in conditions of extreme pollution and bad weather.

Advantages

•   Lower discharge voltage levels optimizing the insulation coordination;
•   High energy absorption capability, adequate to critical applications;
•   Electric characteristics stability even in severe duty conditions;
•   High resistance to bad weather, pollution, sea fog, tides and winds,etc; the silicone
    rubber housing, which has already been well established in surge arrester
    application, has shown its excellent performance under these conditions, both in
    tests and field;;
•   As being a non-fragmentary project, the construction of the active part with no air
    gaps avoids the explosion of the housing in fault conditions, and the damages this
    condition might cause, particularly appropriate to the suspended installation
    required in transmission lines, not posing risks under the lines;
•   High mechanical resistance.