Causes and Analysis of Contact Resistance of Metal Busbar in Low-voltage Assemblies
Low voltage busbar is commonly used in low-voltage electrical systems to connect electrical switches and power supplies.It is generally composed of multiple parallel or vertically arranged busbar conductors.Copper busbar is one of the main conductors of complete electrical control equipment,and the contact between copper busbar and other electrical components of complete electrical control equipment belongs to a fixed surface contact.Busbars have the characteristics of compact structure,easy installation,low resistance,and good conductivity,and are widely used in low-voltage distribution systems in industries such as construction,machinery,petrochemicals,metallurgy.In this type of product,the contact resistance of the busbar is a key indicator that affects the normal operation of low-voltage assemblies.The high or low resistance value directly affects the stability and safety of electrical equipment.Generally,the contact resistance is affected by the shape and surface roughness of the contact surface,the contact area and contact pressure,and the connection material.The influencing factors of metal busbar contact resistance in low-voltage assemblies are analyzed,and corresponding optimization and improvement measures are proposed,which has certain reference value for improving the quality and reliability of low-voltage assemblies.
contact resistancefour line methodbus connectionelectrical contact materials
NETL
NSTL
万方数据
