The internal design of the busbar slot plug-in box should use high-performance circuit breakers inside the plug-in box;The electrical pre connection between the incoming terminal of the circuit breaker and the plug claw should use copper bars and not cables;The plug-in box must be equipped with transparent protective partitions to prevent electric shock to the live parts inside,in order to avoid the danger of personal electric shock.To ensure the strength and rigidity of the bus duct,the bus duct shell is made of aluminum magnesium alloy profiles;It has the advantages of strong heat dissipation,strong corrosion resistance,non-magnetic properties,and no defects such as bubbles,cracks,flow marks,or oxidation.The outer shell of the bus duct system is made of aluminum magnesium alloy,which has undergone anti-corrosion treatment on the surface.Epoxy resin spraying has strong corrosion resistance,and a test report for the outer shell is provided.The surface of the busbar shell is treated with electrostatic powder spraying or epoxy resin electrostatic spraying to achieve good anti-corrosion effect.

　　The busbar grounding system should use a reliable grounding method for the ground wire,and shell grounding should not be used.The ground wire should be made of electrical grade copper or aluminum that has undergone anti-corrosion treatment,avoiding the use of non specialized materials such as steel plates and aluminum alloys for conductivity.The busbar casing must ensure continuity.The specific operation of the busbar slot plug-in box is that the plug-in box should be easy to install and disassemble;The plug-in box is generally installed above the workshop,and the opening and closing operations of the plug-in box should be easy to carry out on the ground;The connection between the phase and ground wires should be reliable,and the wiring claws should have spring plates.Provide a detailed explanation of the measures taken to ensure reliable connection between the plug-in box and the busbar interface;All bus sockets must be equipped with safety covers.Bus duct safety performance testing,flame retardant testing,and all series of products should pass formal laboratory flame retardant testing;Alternating heat and humidity test,all products in the series must pass the alternating heat and humidity test in a formal laboratory;Bus duct anti vibration test,providing horizontal and vertical anti vibration test reports for bus ducts.

　　The inspection of busbar trunking should strictly check the quality of the busbar trunking,with a focus on the following aspects:the busbar trunking shell should be intact and undamaged.The model and specifications of the bus duct and distribution box meet the design requirements.The attachments are correctly matched and in sufficient quantity.The connection surface of the busbar joint is flat,the connection holes are symmetrical,and the distance from the edge is consistent.The insulation board between busbars must not be damaged or broken.Use a 500V megohmmeter to measure the insulation between each phase,phase to neutral busbar,PE busbar,and phase to shell of each bus duct,with a minimum of 20.The construction site should be clean and the idle time on site should be minimized as much as possible.Do a good job in waterproofing and moisture prevention.The measurement and positioning of bus ducts,as well as the direction of bus ducts,should be determined based on the design drawings and actual engineering conditions.The principle is to avoid conflicts with large-diameter pipelines and cable trays,and to lay them in a straight and short path as much as possible.The distance to the ground should not be less than 2.5 meters from the surface of the building.The clear distance between other electrical circuits and various types of pipelines should follow current standards.The spacing between supports and hangers for horizontally installed bus ducts is generally 2-3m,determined by the weight per meter of the bus duct.Brackets should be added at the junction of busbar trunking bends and distribution boxes.

　　Bus duct splicing must be done with care not to damage the bus duct during lifting and splicing.Nylon ropes should be used during lifting,and steel wire ropes must be fitted with rubber or plastic sleeves.The joint area should be properly wrapped to prevent debris and garbage from falling in.The assembly sequence can be based on the arrangement diagram and numbering of the bus duct.When assembling and connecting,place the matching insulation board on top,insert the insulation sleeve and connecting bolt,add washers and spring washers,and manually tighten the nut.Before fastening,adjust the levelness and perpendicularity to ensure that the levelness and perpendicularity do not exceed the tolerance,and the total length error does not exceed 10mm.Tighten with a torque wrench to reach the specified value,and install the cover plate and grounding strip(plate)in time.To prevent accidental factors and reduce insulation,the insulation resistance should be measured again every time a section is assembled and connected,and problems should be detected and dealt with in a timely manner.The spring on the spring bracket should be in a state of free extension and contraction up and down.