Photovoltaic bracket installation: According to the design drawings, the positioning and laying line are first carried out. The color steel roof is mainly the positioning of the fixture, and then the rail is installed. Pay attention to the spacing of the fixtures, the guide rails of the same row and the spacing of the adjacent two rows of component rails. The installation of the guide rails shall be carried out in the order of the guide rail joints at both ends of the intermediate section. After the guide rails are installed, check the horizontality of each guide rail. The curvature of each span guide rail shall not exceed 1 mm. After a set of Solar Panels C Profile Steel brackets is installed, an accurate check of the position of the bracket is performed. Pay attention to the spacing between the front and rear rows, the distance from the wall in the design, and so on. Protection measures should be taken during lifting and handling to avoid personal injury and damage to existing buildings. In addition, when installing the bracket column, beam and guide rail, do not fasten the bolts in place at one time. After the brackets are all leveled straight, the bolts are all tightened.
After the component is opened out of the box, check:
a. Check the components from the side to see if they are damaged after unpacking. If there is any damage, notify the project department material staff in time and hand it over to the material staff.
b. When handling components, it is necessary to check whether the glass on the front and back of each component has chipping, cornering or cracking; check the junction box for degumming, loosening or falling off; check the photovoltaic cable and male and female head for deformation or damage. . If the above phenomenon occurs, the components should be properly placed aside. When placing, avoid secondary damage to the components. It is strictly forbidden to transport the damaged components to the construction site. At the same time of discovering the above problems, the project staff should be informed in time and handed over to the material staff.
PV module installation:
a, solar panel installation
During the transportation process, the panel should be handled lightly, without strong impact and vibration, and should not be stressed; the installation of the panel should be installed from bottom to top, block by block, and must be handled gently during installation to avoid damage to the surface. Protect the glass; the panel installation must be horizontal and vertical, and the spacing between the panels in the same square should be the same; pay attention to the direction of the junction box of the panel.
b, the battery board is fixed
Bolt the assembly to the chain in the steel structure, add a double-puncture gasket between the battery board and the guide rail, put an intermediate clamp and a side clamp, and lock it with a nut.
c, battery board wiring
According to the design drawings, determine the wiring mode of the battery board; the wiring of the battery board should meet the requirements of the design drawings; the wiring should be provided by the manufacturer of the battery board. The wiring should be connected with the positive and negative poles to ensure correct wiring. After each string of battery boards is connected, check whether the open circuit voltage of the battery board string is correct. After the connection is correct, disconnect the wiring of one battery board to ensure the safe operation of the subsequent process.l Purlin steel manufacturer
d, square array wiring
The wiring of the component square array shall have measures such as support, fastening and protection. The conductors shall have appropriate margins, and the wiring shall conform to the provisions of the design drawings.
The joints connecting the wires shall be tinned, and the multi-strand wires shall be crimped to the terminals (nose). A maximum of two core wires shall be allowed at each terminal, and a gasket shall be added between the two core wires, and all the wiring screws shall be tightened.
After the square array components are finished, check whether the wiring is correct according to the construction drawing. The component wiring and square array lead cables should be fixed firmly and reliably. The square array wiring and inspection should be covered and locked all the junction box covers, the output of the square array. The end should have an obvious polarity mark and a numbered mark of the sub-matrix.
After each square is connected to the line, an electrician is responsible for measuring, ensuring that the entire square array current is turned on, and the voltage error of the adjacent two square arrays is 5V, and the current error is within 5%.