In order to consider the insulation requirements, the copper bars on the racks of AC distribution cabinet, DC distribution cabinet, UPS cabinet, UPS secondary distribution cabinet, DC secondary distribution cabinet, battery cabinet and so on mostly need a set of heat-shrinking tubes. Today we will learn the technological process of heat-shrinking tubes with copper bars.
Prepare the copper bars of the heat shrinkable tube and make sure the connection between the copper bars.
Prepare heat shrinkage tube, scissors and hairdryer with corresponding specifications and colors.
Choosing appropriate heat-shrinkable tubes according to the width of copper bars ensures that the heat-shrinkable tubes are flat and close after heat-shrinkage without distortion, deformation and warping.
The heat-shrinkable pipe shall not be damaged after heat-shrinkage, and the words on the heat-shrinkable pipe shall form a straight line.
Tools: scissors, hair dryer, telescopic blade, steel plate ruler
Material: Matrix heat-shrinkable tube
Prepare the corresponding copper bars according to the assembly drawings and select the appropriate heat-shrinkable tube for the mother row.
Contrast the length of the heat shrinkable tube with the copper row shear
When shearing heat-shrinkable pipe, the shear opening should be perpendicular to the axis of heat-shrinkable pipe.
The length of the heat-shrinkable tube of the mother row is slightly longer than that of the copper row to be set. The length of the heat-shrinkable tube and the copper row to be covered shall be the same as that of the copper row to be covered.
If multiple holes are evenly distributed on a copper bar, and the distance between holes is less than 20 mm, the copper bar can not have a set of heat shrinkable tubes.
The copper bars of the heat-shrinkable tubes are neatly packed and placed on the worktable. The suitable temperature of the heat-blower (the diameter of the heat-shrinkable tubes can be reduced to 1/2-1/3 when heated to over 100 degrees) is used to blow slowly and uniformly from one end of the copper bars to the other end of the copper bars. Turn over the copper bars and blow the other side of the tube in the same way until the tube is applied to the copper bars.
Cutting, the heat shrinkable pipe after blowing should determine the cutting length according to the hole on the copper row and the connecting row. First, the number of holes and the specific position of the copper row after blowing should be determined. The cutting length can be determined by pressing the holes on the copper row from top to bottom, and then according to the connecting row. With the center of the connecting hole as the benchmark, 1/2L+5mm (L as the width of the connecting row) should be cut off at each end. When cutting, care should be taken not to scratch the copper row.
If the hole on the row is connected with the insulating column, the edge of the heat shrinkable tube should be 1/2L+5mm from the center of the insulating column (L is the width between the parallel opposite sides of the insulating column).
If the hole on the row is connected with the shunt, the width of the connection between the shunt and the copper bar shall be taken as the criterion.
The heat-shrinkable tube of the mother row should be cut completely, without brim or tear, and the heat-shrinkable tube should be straight and beautiful after cutting.
When two copper bars are connected simultaneously, the two copper bars are sleeved with a heat-shrinkable tube.
The above is the usage specification of bronze plate for heat shrinkable tube sleeve of mother row.