Earthing Washer For Solar Mounting System

Some of the difficulties in grounding PV modules arise because copper conductors are typically used for electrical connections while the module frames are generally made of aluminum. The incompatibility of copper and aluminum was discovered from numerous fires in houses wired with aluminum wiring in the 1970s. Copper and aluminum will also react and corrode. The surfaces of aluminum frames are anodized or have powder coatings, constituting an insulating surface. These insulating barriers do not provide any protection from electrical shocks. but are Sufficient to impair long-lasting. low-resistance electrical connections.In order to use the bare copper wire for bonding. the fasteners attached to the aluminum must be stainless steel. Several years ago some companies developed a product that allows PV panels to be directly ground bonded to the aluminum rails or other mounting systems.
The rails are then connected to each other and to around. The products are marketed under the name "Bristar" The product line of Bristar parts includes special washers with sharp ridges on them that penetrate through the non-conductive coatings of the aluminum module frames and mounting racks. The mounting system themselves are then grounded so the entire assembly is grounded. The Bristar system has gained wide popularity because it saves time in installations by eliminating the need for a separate ground wire to every PV module, it has been demonstrated to meet strict safety standards. and it has been shown to provide a reliable electrical connection that is gas-tight and therefore resistant to oxidation. Bristar earthing washer for solar mounting system provide a relatively simple solution to a complicated issue in PV installations.