All conductive parts are made of copper busbar series or pure copper plate according to gb5585-85 rules, and the surface plating is made according to the requirements of the drawing. If bending is required, annealing treatment shall be carried out before bending, and the bending fillet radius shall be greater than the thickness of the sheet to avoid damaging the internal organization and cracking. The touch surface of the fastening connection part is required to be leveled. 3. The insulating materials selected for insulating parts according to the drawings, epoxy plates or epoxy rods should be soaked in insulating paint and dried. After installation, the resistance insulation value of the positive and negative copper queuing rack of the cabinet is 100m (at the ambient temperature of 25 ℃ -2 ℃), and the relative humidity is 90%. When the voltage is DC 500V). The rivet nuts and screws must be firmly pressed and riveted. They should be inspected according to the required tightening torque of screws and nuts, and there should be no loosening. The thread of the parts shall be maintained during the spraying process. For the blockage caused by the plating process, it shall be re tapped from the beginning. The threaded hole shall be free of sliding thread and broken thread, and the screw shall be able to be screwed in smoothly with appropriate tightness. The solid parts and objects shall conform to the selected specifications or drawings. The surface treatment of screws, bolts, nuts, flat washers and spring washers shall comply with the requirements of the drawings. If the screw is broken, the screw should be able to be screwed in smoothly with appropriate tightness.
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