The outer shell of the bus duct can directly prevent foreign objects from contacting the conductive copper busbar body of the bus duct,effectively preventing personnel and animals from touching it,and different protection levels can effectively prevent the erosion of dust,water,and other debris.

　　Many incidents of bus duct burnout are largely caused by inadequate installation of connectors or inadequate protection requirements for the bus duct casing.The overall protection standard for busbar trunking is not limited to the protection of the busbar trunking body,but also includes the combination of its accessories for overall protection during the power supply process of the busbar trunking.Many bus duct manufacturers have specific markings on the protection level of their products.The bus body has various levels such as IP54,IP65,IP66,IP68,etc.Before leaving the factory,the products are basically produced according to the level requirements.However,during the production process of accessories,substandard craftsmanship or non-standard installation may result in the overall product not meeting the level requirements.

　　For example,important accessories of bus ducts include cover plates and connectors.If the cover plate is not designed with a waterproof groove or if there is a slight deviation in the size of the nut hole during accessory processing engineering,it will lead to a decrease in the overall protection of the bus duct and fail to meet the original safety level.

　　During the installation process,if the installation is not standardized,there are large installation gaps,and the installation is not firm,even if the busbar has a higher level,it cannot truly protect the safe operation of the busbar slot.So,when facing a wide range of manufacturers in the market,users must carefully check the technical strength,production strength,installation strength,etc.of the other party,and conduct a detailed inspection of the busbar trunking body.If necessary,it can be sent for inspection.During the installation process of the bus duct project,it is necessary to remind the construction party to pay attention to the installation specifications of the bus duct.The installation of the connection and cover plate must be carefully inspected to ensure that the installation is tight and meets the protection level standards.Do not arbitrarily lower the protection level standards in the budget planning of bus duct projects due to cost considerations,and choose bus duct products with IP40 or even IP30.

　　During the use of bus ducts,the accumulation of dust,combined with changes in temperature and humidity,can produce water vapor or even water droplets on the surface of the bus duct products.When these water vapor accumulate too much,bus duct short circuits and breakdowns can occur,which often occur in some human errors or humid coastal areas.Therefore,when selecting bus ducts,it is necessary to choose bus duct products with corresponding protection levels based on the usage area and environment.