It is only necessary to use a metal flat-plastic hose to make mechanical strength from the outside of the vacuum exterior. Every pass, the vacuum switch is broken, and the flat coated hose is made a large displacement, a large number of axial displacement, and the flat coated hose is destroyed by fatigue.

When the vacuum switch is a flat-coated hose office condition, pass or break, when the on-line metal hose demand tensile variation, when the fracture is broken, the stream of metal hoses is compressed, in order to ensure the survival of the vacuum switch , The displacement of the stratum tube stretch and compression must be preset. Other parts of the vacuum arcuating room are not equal to the normal operation, so the fatigue of the flat coated hoses also voted the mechanical survival of the vacuum extinguishing room.

Applying a flat plastic hose of a vacuum switch has a very much impact on its fatigue survival. Therefore, the axial excignitial shift of the flat coated hose vote for the maximum contacts that can be obtained.In addition, the contact of the vacuum switch is equal to the actual axial displacement of the flat coated hose. Products are widely used in construction, machine tools, railways, vehicles, chemical, automotive, monitoring, building decoration, architectural decoration, building materials, decoration and decoration..

Its main contact is located in a vacuum extinguishing room, and the stripped metal hose is a key component in a vacuum extinguishing room. If it is destroyed, push on fittings Suppliers the survival of the vacuum extinguishing room is terminated due to leakage. The flat coated hose is effective in vacuum is closely closed in vacuo switches, and the vacuum switch is a switch facility that is discharging in a vacuum. The flat coated hose is a tight composition of the vacuum extinguishing arch shell.The moving contact movement can also maintain the vacuum arc casing