Medium-voltage disconnect switch FLa 15/60

3-poleoverheadsafety

For decades DRIESCHER - Outdoor switch-disconnector have been used as line section alizers in medium voltage overhead line networks and have proven to be extremely satisfactory based on their reliability and operating safety. The switch is in compliance with the regulations as per DIN VDE 0670Part 301.The arc extinguishing device in its weatherproof housing, operates in accordance with the oil flow principle of the well-established DRIESCHER circuit-breakers and is shunted in the On condition. Each arcing chamber is filled at the factory with approximately 0.5litres of Shell Diala D switchgear oil. The switch frame and the operating shafts mounted in bronze bearings are hot-galvanized. All insulators(catalogue 712) used in the construction are made of cycloaliphatic cast resin (Color RAL 8017 brown).The contacts with flat terminations in accordance with DIN 46206 are made of electrolyte copper and are silver plated. The switch has a current path with contacts that are designed with an adequate cross section. Even after many years of operation, a spring guarantees a constant contact pressure as well as easy and satisfactory switching. The nuts, washers and spring washers of stainless steel ensure corrosion-free connections even under extreme climate conditions. The switchgears are fastened to supports for mounting on wooden or concrete poles. For the wide span system the switches are delivered in three single poles (for mounting on concrete crossarms) with coupling shafts.