Isolating switch for gas-insulated switchgear - has support for rotary location of switch blade and bearing for three=phase drive shaft and earth

摘要

The drive shaft (6) is provided for operating at least one knife switch (1). The earth connection (8) is fixed on or at an insulating part (4), also the support part (2), the fixed contact (3) and the bearing (70) for the drive shaft. The insulating part can be made of synthetic resin. Of the support part (2), the fixed contact (3), the bearing (70) and the earth connection (8), at least two are arranged at the insulating support part (40). The support part (2), the fixed contact (3) and the earthing connection (8) are cast integral at the moulded insualting support part (40). ADVANTAGE - Developed so that it can be easily built in short time and lined up as well as switchgear so that switch chamber and bus-bar chamber using isolator can be compactly built.