General Guidelines for Solar Mounting System Design

     The service life of the system design for solar energy installation is usually greater than or equal to 25 years, which matches the service life of solar panels.During the entire service life of the installed system, no severe corrosion, no deformation, and no loosening of the connections are allowed.The safety factor of the structural components carried during the system installation should be greater than or equal to 1.Simply put, the safety margin of the design is sufficient; do not just rely on the limit values when performing calculations.If you install the system above the areas where pedestrians often walk or the roofs of key buildings, an important factor needs to be upgraded one level.

     When designing and also installing the system, multiple simultaneous loads need to be taken into consideration.Basic loads include the system's own weight, namely sys self-weight, the weight of solar panels, namely solar panel wt, wind loads, namely wind loads, and snow loads, namely snow loads.The climate conditions at the installation location will have an impact on the wind and snow load values.When designing, calculate the stress under different load combinations, such as dead load plus wind load, dead load plus snow load, light breeze and the like.Each load is multiplied by a partial safety factor for additional safety margin.The safety factor for wind and snow loads, the part where the generating unit is at a value around approximately 1.A straightforward presentation of "4 and 1". More specific texts which can be abbreviated as required can be further added and explained. At the present time it is just a simple presentation of "4 and 1".Its own weight is 1.After all combinations have been considered, the stress at a certain point on the installation structure cannot exceed the allowable limit condition of the material.

     This mounting structure will deform when subjected to a load, but the deformation will not be excessive.The deformation has exceeded the appropriate limit, the solar panels have bent, the glass has broken, and the power generation efficiency has decreased.Under wind or snow load conditions, the maximum deflection of the installed guide rail shall not exceed 1/200 of the span, which is the standard controlled by the industry standard (Industry standard control standard: Under wind or snow load, the maximum deflection of the installed guide rail shall be less than or equal to 1/200 of the span).The length of the double-column track is 2 meters, and the deflection at its midpoint does not exceed 10 millimeters.A system with double-glazing retrofit components has relatively strict set requirements, which are generally limited to within 1/250.Deformation control, although strictly required, is very important to ensure that the solar panels are in good condition.

     All connection points for installing the system must be able to transmit forces reliably.Bolted joints require sufficient tightening torque, and spring washers or lock nuts must also be used to prevent loosening caused by vibration (bolted joints need sufficient tightening torque, while spring washers or lock nuts should be used to prevent loosening caused by vibration).The weld shall be complete without any cracks. After welding is completed, remove the welding slag and carry out corrosion-resistant coating treatment.The anchorage condition of the basic part is in the installation structure, which is relatively critical.We calculate the embedded depth of the anchor bolts, and also calculate the pull-out resistance, in order to resist wind uplift.When embedding bolts in concrete, avoid cracks. The distance from the bolt center to the foundation edge should be at least 5 times the bolt diameter. (When embedding bolts in concrete, the distance from the bolt center to the foundation edge should be at least 5 times the bolt diameter to avoid cracks.).

     All metal parts are in an exposed state, and reliable anti-corrosion treatment must be carried out to protect them.Aluminum alloy needs to be anodized, and the thickness of the oxide film should be greater than or equal to 15 microns.Steel needs to be hot-dip galvanized, and the thickness of the zinc coating must be greater than or equal to 65 microns.Zinc coatings damaged by on-site cutting or welding operations need to be repaired with zinc-rich primer.The materials used for support need to meet the basic fire safety requirements.Metal by itself is not flammable. But if a cable or a junction box is close to the bracket, the design has to prevent the cable from hitting the sharp metal edge. In order to avoid short circuits and sparks.In the area of the outdoor ground support system, clear away the surrounding flammable debris to reduce the risk of fire.