1. The shell of the dense bus duct is assembled with profiles to enable it to withstand strong electric and thermal stresses. According to the data, it passes the dynamic thermal stability test, and the bus shows no perceptible permanent deformation after the test.
2. The dense bus duct conductive bar is covered with multi-layer insulating materials, and can withstand 3750V power frequency withstand voltage.
3. The insulation resistance of each section of the dense bus duct shall not be less than 20M Ω under the normal condition that the ambient air temperature is 20 ± 5 ℃ and the relative humidity is 50~70%.
4. When the dense bus duct passes the rated current for a long time, the temperature rise of its conductive part shall not exceed the value listed in the table.
5. The intensive bus duct adopts a high-strength fully enclosed structure, and the protection grade can reach IP56.
6. The plugging and unplugging times of the dense bus duct plug box and bus duct shall not be less than 200 times.
7. When the dense bus duct passes the rated current for a long time, the temperature rise of its conductive part shall not exceed the value listed in the table
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