What are the standard requirements for photovoltaic support materials? What are the functions of PV supports?

1、 What are the standard requirements for photovoltaic support materials

PV support materials are divided into main materials and auxiliary materials. The main materials are main raw materials, including plates, pipes, profiles and cast steel. The auxiliary materials are auxiliary raw materials, including connecting materials, coating materials, welding materials, connecting fasteners, anti-corrosion coatings and others. What are the standard requirements for photovoltaic support materials?

1. The surface of all profiles shall be free of cracks, scabs, folds, pits, bubbles and inclusions, and there shall be no delamination, slag inclusion and other defects at the edge or fracture.

2. The pipe and profile materials need to meet the requirements of the corresponding standard documents in China. The area ratio of the new phase of the PV power station support standard is: Technical Requirements for PV Power Generation Support. The standard number is: NB/T10642-2021, which can be referred to.

3. Photovoltaic support installation materials must have quality certificates, quality inspection marks, inspection reports, quality assurance certificates, etc., and the product varieties, specifications, performance indicators should be indicated. The product identification content should meet the requirements of product standards, contract terms, and design documents.

4. If the materials used for the fabrication and installation of the support are required to be re-inspected according to the provisions of the national standards, the performance indicators must be re-inspected according to the provisions of the current national standards and the terms of the order contract. Only after they are qualified can they be used in the fabrication and installation of the support.

5. When using imported materials for photovoltaic support, it is also necessary to have corresponding certificates of conformity according to corresponding standards.

2、 What are the functions of PV support

The function of the support is to protect the PV module from damage such as light, corrosion and strong wind for 30 years. There are many materials of the support. The special photovoltaic support is made of carbon steel Q235. The hot galvanizing process is adopted. The average galvanized thickness is 65um. The basic thickness of the support can be equal to or greater than 2.5mm. The compression resistance, strong wind resistance and corrosion resistance are very good.

The connection between supports must be assembled with nuts and connectors. The bracket assembled by nuts and connectors is easy to disassemble, while the bracket assembled by welding must be cut before disassembly, which affects the interests of users. As for counterweight, the most commonly used ones on the market are cement, steel structure, chemical anchor bolts, etc.