Medium-voltage disconnect switch FLa 15/60

3-poleoverheadsafety

For decades DRIESCHER - Outdoor switch-disconnector have been used as line sectionalizers inmedium voltage overhead line networks and haveproven to be extremely satisfactory based on theirreliability 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 arcingchamber is filled at the factory with approximately 0.5litres of Shell Diala D switchgear oil.The switch frame and the operating shafts mountedin bronze bearings are hot-galvanized. All insulators(catalogue 712) used in the construction are made ofcycloaliphatic cast resin (Color RAL 8017 brown).The contacts with flat terminations in accordancewith DIN 46206 are made of electrolyte copper andare silver plated.The switch has a current path with contacts that aredesigned with an adequate cross section. Even aftermany years of operation, a spring guarantees a constant contact pressure as well as easy and satisfactory switching.The nuts, washers and spring washers of stainlesssteel ensure corrosion-free connections even underextreme climate conditions.The switchgears are fastened to supports for mounting on wooden or concrete poles.For the wide span system the switches are deliveredin three single poles (for mounting on concrete crossarms) with coupling shafts.