The installation of enclosed bus ducts requires stricter and more standardized details compared to ordinary bus duct installations.Ensure that the bus duct is located in a closed space with a low failure rate,greatly reducing the operating and maintenance costs of the product.The enclosed bus duct should be assembled according to the design and product technical documents.Before assembly,the insulation resistance of each section should be measured,and the measurement results should meet the design requirements,and records should be kept.The fixed distance of the bus duct shall not exceed 2.5m.The height of horizontal laying from the ground should not be less than 2.2m.

　　The end of the enclosed bus duct should be equipped with a closed cover,and the connection between the shells of each section of the bus duct should be detachable.There should be a grounding wire between the shells,and both ends should be reliably grounded.The connection between the busbar and the equipment adopts soft connection.The busbar fastening bolts should be supplied by the manufacturer and tightened with torque wrenches.The installation height should meet the design requirements,and if there are no requirements,the distance from the ground should not be less than 2.2m.The busbar should be reliably fixed on the bracket.The diameter of the suspension rod for hanging the bus duct should be compatible with the weight of the bus duct,and the nut should be adjustable.The installation height should meet the design requirements,and if there are no design requirements,it should comply with the specifications.The columns can be made of steel pipes or steel sections.Fixed brackets should be installed along the walls or columns,and anti-seismic devices should be installed and waterproof platforms should be made at the floor slabs.

　　When the length of the enclosed busbar laying exceeds 40m,expansion joints should be installed.Suitable measures should be taken at the expansion joints or settlement joints crossing the building.This requirement should be raised when ordering equipment;The installation of enclosed busbar plug-in boxes should be reliably fixed.When installed vertically,the installation height should meet the design requirements.If there are no design requirements,the bottom opening of the plug-in box should be 1.4m;Protective measures should be taken for the vertical installation of enclosed busbars below 1.8m from the ground(excluding electrical dedicated shafts,distribution rooms,motor rooms,technical floors,etc.);When a closed busbar passes through firewalls and fire-resistant floor slabs,fire isolation measures should be taken.

　　The form of the support and hanger is determined by the location and weight of the enclosed bus duct installation.There are also three installation methods for the bus:vertical installation,horizontal side installation,and horizontal suspension installation.The support can be provided by the manufacturer according to the user's requirements,or can be made by oneself.The support is generally made in several types such as"one"-shaped,"U"-shaped,"L"-shaped,and"T"-shaped;Any enclosed or plug-in busbar supports or hangers should be installed accurately,horizontally and vertically,and securely fixed.When installed in rows,they should be arranged neatly and spaced evenly.The fixed bracket bolts should be fixed with flat washers and spring washers,with 2-4 exposed threads.The fixing of expansion bolts for brackets should be based on the accurate measurement of the bracket position according to the direction of the busbar path when installing brackets on buildings.The expansion bolts for brackets should be fixed on the drilled holes.