Shear bolt connector EP1160945A1 discloses a gas-insulated switchgear comprises cable bushing. This sort of cable bushing is commonly used as link system in switchgears. Fig.iA to Fig.1C reveals the connection unit. It has: feeder bushing three, cable 1 and cable termination 2. The feeder bushing 3 is embedded during the side plate of GIS with a si