Sichuan D&F Electrical Technology Co.,Ltd.
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Soft Connection

Soft Connection

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    Sichuan D&F Electric Co., Ltd. is a wholly owned subsidiary of Sichuan D&F Group (Register capital: 50 million RMB), with a registered capital of 4.6 million RMB, located in Luojiang District, Deyang, Sichuan. D&F Electric is committed to the R&D, production and sales of a variety of laminated busbars, copper busbar expansion joints (flexible connection), soft busbars. All these parts are based on the material of copper or aluminium. Our mission is to supply the full solution for all types of power distribution systems.


1.  Soft Connection


Soft connection (also called busbar expansion joint)  is a kind of flexible connection part that compensates for busbar deformation and vibration deformation caused by temperature changes.


 

   

2.  Products Characteristics


A)The surface area of the conductor is enlarged to increase the conductivity.


B)Reduce stress damage to power supply facilities, prolong service life, and avoid maintenance.


C)Adjust equipment installation error to improve installation efficiency.


D)Good heat dissipation, auxiliary cooling effect.


E)It can avoid the operation accidents caused by earthquake and displacement.


F)It makes the conductive connection between high current equipment more convenient, reliable and safe, and protects the associated equipment from external force.


GEasy installation, high electrical rate, energy saving, low connection resistance, good electrical conductivity, strong anti fatigue ability,  long service life and maintenance free.


3.  Process Technology


The manufacturing process of copper foil flexible connection is pressure welding or brazing welding.



I.  Pressure Welding


 Pressure welding is to press the copper strip and aluminum strip laminated parts together, using molecular diffusion welding, and forming by    high current heating pressure welding.


Thickness of copper strip and aluminum strip: 0.05mm to 0.3mm



  

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Remarks: the contact surface can be tinned, nickel plated or silver plated according to the user's requirements 

               (except for aluminum strip).



II.  Brazing Welding   

 

Brazing is to press the copper strip and aluminum strip laminated parts together, using silver based solder and butt welding with flat copper block.


Thickness of copper strip and aluminum strip: 0.05mm to 0.3mm


                

 

Remarks: the contact surface can be tinned, nickel plated or silver plated according to the user's requirements

                (except for aluminum strip) 


  

4.  Applications


A) Mainly used in electrolytic aluminum plants, non-ferrous metals, graphite carbon, chemical metallurgy and other industries.


B) Used for connection between large transformer and rectifier cabinet, rectifier cabinet and isolating knife switch, and connection between   busbars.  


C)Suitable for various high and low voltage electrical appliances, vacuum electrical appliances, mining explosion-proof switches, automobiles, locomotives and other related products.


D)It is used to make flexible conductive connections in large current and seismic environment equipment such as generator sets, transformers, bus ducts, switches, electric locomotives, and new energy battery packs.




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