The medium pressure block is used to fix the main components and ensure their connection, and can also indirectly connect the guide rail, so that the components can be connected into stable components. Photovoltaic middle clamps are mainly used to connect two PV panels, enhancing the. Aluminium Mid Clamp (also known as middle clamp) is one of the important solar mounting accessories, which is used for clamping solar panels between two solar modules. The mid. Solar photovoltaic (PV) energy systems are made up of diferent components. Each component has a specific role. It features a unique "double-hole" design: one end is bolted to the structural rail, while the other end utilizes its powerful clamping force to firmly fix the frame of the. At the heart are photovoltaic (PV) cells that convert sunlight into electricity, supported by protective and structural layers that ensure it's delivered safely and reliably. Most panels include solar cells, tempered glass, encapsulant, a backsheet, a metal frame, an inverter, and a junction box. 45% annual degradation compared to 0.