Specification for Manufacturing, Installation, and Current Capacity Selection of Electrical Copper Bus Bar

The production of Ground Bus Bar must ensure the integrity of its appearance and structure, and all processing procedures must follow standardized operating requirements. The surface of the completed busbar should be smooth and flat, without defects such as cracks, wrinkles, deformations, and distortions. Busbars arranged in the same way should be symmetrical, consistent, horizontal, and vertical to ensure neatness after installation. The bending operation of BusBar for ABB requires the use of a bending machine for cold bending processing, and it is strictly prohibited to perform hot bending treatment through gas welding heating; The distance between the bending point of the busbar and the nearest insulator fixture or busbar overlap should not be less than 50mm. Four M12 bolts should be installed at the busbar connection point for connection. Copper Solid Bus Bar punching should be processed using a dedicated punching machine, and gas welding or electric welding cutting is prohibited; The busbar overlap surface must be tinned, and the treated overlap surface must be kept flat, without any rough surface, peeling, or uncovered areas of tin layer, to ensure the conductivity and connection reliability of the overlap.
 

The spacing size of the Electrical Copper Bus Bar installation must be strictly in accordance with the design drawings and cannot be changed arbitrarily. Taking the 6kV high-voltage busbar as an example, the electrical gap between phases should be greater than 12.5cm. The busbar overlap should be connected by through bolts, and conductive paste should be evenly applied to the overlap surface to improve contact conductivity and reduce contact resistance. The installation of bolts should follow a unified operating standard. When the High Voltage BusBar is placed flat, the bolts should be threaded from bottom to top. In other installation situations, the nuts should be placed on the equipment maintenance side; The bolts should be equipped with flat washers and spring washers, and the length of the exposed nut after tightening the bolts should be 2-3 buckles. The coordination between the busbar and the supporting fixture should maintain a reasonable gap to avoid stress caused by thermal expansion and contraction. The fixture should not be overly tightened. When the BusBar Voltage is flat, the gap between the upper pressure plate and the busbar should be maintained at 1-1.5mm, and when the busbar is vertical, the gap should be maintained at 1.5-2mm. A fixture fixing dead point should be set up for the entire busbar, and the fixing dead point should be selected in the middle of the busbar to ensure the stability of the overall installation of the busbar.

The application of phase paint on Electrical Copper BusBar is an important step in appearance protection and phase recognition, and the painting operation must follow clear range requirements. All surfaces of a single busbar should be uniformly coated with phase paint, while multiple busbars should be coated on all visible surfaces to ensure clear phase identification. At the same time, it should be noted that areas within 10mm of the BusBar Electric connection and 10mm on each side of the busbar fixture should not be painted with colored paint to avoid affecting the conductivity of the busbar overlap and the coordination effect between the fixture and the busbar.
 

The selection of current carrying capacity for copper busbars is the core link in the design and application of Power Bar Busbars. It needs to be determined comprehensively based on multiple factors such as system rated current, operating environment, installation method, busbar material, and cross-sectional specifications to ensure that the selected High Current Contacts current carrying capacity matches the current requirements of the system operation, reserves a reasonable safety margin, avoids faults such as busbar overheating and erosion caused by insufficient current carrying capacity, and ensures the long-term stable operation of the power system.

If you have any technical questions or practical needs regarding the production, installation, standardized construction, or current carrying capacity selection of the Electrical Copper Bus Bar, please feel free to contact us at any time. We will provide professional technical guidance and customized solutions to assist in the efficient and compliant implementation of your electrical engineering projects.