The trunking shall not be lifted and tied with bare steel wire ropes, and the waterproof busbar trunking shall not be placed or dragged to the ground at will. In a dry, clean, non corrosive, and non corrosive warehouse, the outer packaging of the flexible warehouse should be sandwiched between the upper and lower fir trees of the waterproof bus duct, and the packaging should be released.
1. Development trend of waterproof busbar duct installation
The main line has its own branch line and voice number, which is represented by the number every time it is installed.
2. Inspection before installation of waterproof busbar duct
Check if the casing of the trunking is complete and damaged, and if the casing of the busbar trunking is loose and connected reliably;
Check if the plug interface of the bus slot is closed and locked; Measure the resistance with a 500V megohmmeter, and the measured value of each section should not be less than 20m Ω.
3. Connection of waterproof busbar duct
The bus bracket must be installed together with the bus. The waterproof busbar duct should be correctly placed according to its name, phase sequence, number, direction, and installation markings. When the waterproof busbar duct is connected to the section, it should represent the external wiring duct waterproof busbar duct. After connection, the trunking and casing should be mechanically constrained.
Installation steps: First check if there is any collision between the waterproof bus duct connection and the connector connection surface of the connector. After confirming that there is no damage, connect the two waterproof bus duct connectors to the bus, insert the waterproof bus duct into the connector, ensure that it is in place and tighten with torque; Dock the waterproof bus duct, connect the bus ends of two interconnected buses, and then insert the copper wire and insulation partition into the interphase neutral wire (the end of each phase is the interphase neutral wire). The insulation isolation board is sandwiched between the copper connector and the copper connector. After confirming that there is no loss, screw it into the bird's nest and pay attention to whether the copper connector, bus end, and insulation plate connection hole are secure, and whether the copper connector and insulation membrane are pasted in place and locked tightly.
Sponge capacitance (M10 capacitance 17.7-22.6nm, M12 wave capacitance 31.4-39.2nm, M14 capacitance 51.0-60.8? Nm, M16 capacitance 78.5-98. In. M). Check with a 0.1mm feeler gauge. If the penetration is less than 10mm, it is qualified. Tighten the screws on the left and right side panels and the upper and lower cover plates.
After the waterproof bus duct is connected as a whole, a multimeter must be used to check the grounding resistance within the range of 1 Ω. The resistance value is less than 0.1 Ω to ensure grounding requirements.
4. Horizontal installation of waterproof busbar duct
When setting the horizontal line of the waterproof bus duct for the conductor, the height from the ground should be increased by 2.2M, but it must be set in a dedicated electrical room (transmission room, motor room, vertical line, technical layer, etc.).
Horizontal installation of waterproof bus duct; When the waterproof busbar duct is horizontally installed on the support and hanger, the pressure plate should be fixed horizontally. The connection point of the bus duct shall not be tied through the wall. When installing wall hole main pipes in the trunking, it is necessary to prevent sewage and debris from entering the line.
The wire slot inserted into the inlet hole (fork) should be set in a safe, reliable, and easy to maintain location.
When the winding length of the slot wire exceeds 60m, expansion slot sections, busbar extension slots, and on-site joints (expansion joints) should be set at this position.
5. Longitudinal installation of waterproof busbar duct
When installing the trunking vertically, the vertical distance between connectors should be less than 0.6m;
When the conductor waterproof busbar duct is installed vertically in two rooms, the length of a straight line of the busbar duct shall not exceed 3.6m; When the single layer exceeds 3.6m, it should be made in sections, and intermediate fixed brackets should be installed between layers.
Avoid connecting waterproof bus duct connection points through the floor. When the busbar duct passes through the plate hole, sewage and debris enter the busbar