Before stopping the installation, it is necessary to check the quantity and specifications of the busbar channels. The equipment unpacking point inspection should be jointly stopped by the installation unit, supervision unit, setting unit, and supplier, and recorded. Then check the equipment and accessories according to the packing list, and ensure that their specifications, quantities, and types meet the design requirements. Check the equipment and accessories, the cross-sectional markings should be clear and complete, and the appearance should not be damaged or deformed. The insulation resistance of the busbar should be greater than 20M Ω. When the inspection finds that the equipment and accessories do not meet the design and quality requirements, it is necessary to stop appropriate disposal and stop installation after design approval. It is also necessary to locate the position of the busbar equipment and measure and process the dimensions on site based on the design drawings, equipment location, and wiring of the on-site distribution cabinet.
Next is the manufacturing of the bracket. According to the construction type on the construction site, the bracket should be made of angle steel or channel steel. Four types should be used: "one" type, "L" type, "T" type, and "". The bracket is manufactured according to the selected model and measured dimensions. Gas welding and cutting are strictly prohibited. The large error in handling dimensions is 5mm. Bend bending of irregular steel frames should be performed using pliers and hammers, or hydraulic tools can be used. Use a desktop drill or an electric hand drill to drill holes on the bracket. Gas welding method shall not be used to cut holes, and the diameter of the hole shall not be greater than 2mm of the diameter of the fixed bolt. The screw buckle shall be processed by a threading device or threading device, and wire breakage is not allowed. When it comes to the installation of brackets, they must be added to the corners of the bus duct, the connection with the box (chassis), and the end of the suspension. To a certain extent, the spacing between plug-in bus brackets should not exceed 2 meters (2.5 meters), and the spacing between vertically placed plug-in bus brackets should not exceed 3 meters. When the straight laying length of the blocking busbar exceeds 40 meters, expansion joints should be set up. When the busbar exceeds the expansion joint or settlement joint of the building, measures should be taken to adapt to the movement of the building structure.
The insertion branch point of the busbar tube should be located at a safe, reliable, and easy to maintain center for equipment maintenance. Blocked bus connections should not stop at locations that pass through floors or walls. When blocked busbars pass through firewalls and fire-resistant floors, fire prevention measures should be taken. The overlapping surfaces between busbars and busbars, as well as between busbars and electrical terminals, should be cleaned and coated with electrical compound grease. Cement mortar is used as an embedded support, with a lime to sand ratio of 1:3. Cement should be marked with 42.5 or above. The cigarette ash should be filled and sealed, not higher than the wall, and buried at a depth of not less than 80mm. There should be no less than two telescopic bolt fixing brackets. There should be two hangers fixed on the hanger, with 2-4 buckle rings exposed from the screw buckle. The bolts should be retracted, and flat washers and spring washers should be added, and clamped with double nuts. The welding joints of brackets and embedded parts of brackets should be coated with anti rust paint and topcoat evenly, without leakage, and without polluting the building. When fixing the busbar bracket and embedded iron parts by welding, the weld seam should be filled; When using shrink bolts for fixation, the selected bolts should be suitable and the connection should be firm.
Yunnan Youtong Electric Co., Ltd. is a professional manufacturer of bus ducts and cable trays, with high cost-effectiveness. Crafted with ingenuity, it is durable, with complete specifications and low prices. If you need it, please feel free to call us for consultation!
