How does the strength and pressure resistance of photovoltaic bolts affect the stability and safety of the entire system?

The strength and pressure resistance of photovoltaic bolts play a vital role in the stability and safety of photovoltaic systems. Here are their effects on the system:

1. Withstanding wind loads and external pressure
Photovoltaic systems are usually installed outdoors and exposed to various external environmental factors, such as strong winds, snow pressure, and even earthquakes. Photovoltaic bolts need to be strong enough to withstand these external loads. If the bolts are not strong enough, the photovoltaic panels may loosen or fall off in strong winds or extreme weather conditions, causing system failure or safety hazards.
Wind load: In high wind speeds, the bolts need to be able to keep the panels and bracket systems tight to prevent the panels from being lifted due to excessive wind.
Snow load: In areas with heavy snow, the weight of the snow will put pressure on the photovoltaic panels, and the bolts need to be strong enough to keep the brackets and panels stable.
Seismic load: In areas where earthquakes are frequent, the bolts must have sufficient seismic resistance to ensure that the photovoltaic system does not shift or be damaged during earthquakes.
2. Long-term load and vibration
The bolts in the photovoltaic system must not only bear static loads (such as the weight of the photovoltaic panel), but also dynamic loads from the photovoltaic system, such as vibration, thermal expansion and contraction effects during daily operation. If the strength of the bolts is insufficient, long-term operation will lead to loosening, thread wear, and ultimately panel instability.
Vibration impact: Especially in areas with frequent traffic or environments with mechanical vibration, the bolts need to provide sufficient fixing force to prevent loosening or damage caused by vibration.
Thermal cycle: The photovoltaic system works alternately day and night, and the panels will heat up due to sunlight and cool down at night. This temperature change will cause the material to expand and contract, and the bolts need to be able to resist the impact of this thermal cycle and maintain fastening performance.

3. Fixation of panels and brackets
The strength and pressure resistance of photovoltaic bolts directly affect the fastening effect between photovoltaic panels and brackets. If the bolts are not strong enough or have poor pressure resistance, the panel may loosen or shift, thereby affecting the angle and position of the photovoltaic panel, reducing its power generation efficiency, and even causing damage to the panel.
Fixing performance: Ensuring that the photovoltaic panel is firmly fixed on the bracket is a basic requirement in system design. When the strength of the bolt is insufficient, the panel may tilt or move, affecting the angle of illumination and causing system performance degradation.
Stability: The strength of the bolt is also related to the structural stability of the entire photovoltaic system. If the bolt is fatigued, broken or loose, the entire system may be displaced or tilted, causing system failure or damage.
4. Fatigue resistance and long life
The photovoltaic system is a long-term stable working equipment. The bolts need to have good fatigue resistance to withstand long-term repeated thermal expansion and contraction, vibration and other stresses. If the bolts cause microcracks or fractures due to fatigue, the photovoltaic panel may lose support, thereby affecting the safety of the system.
Durability: High-strength and high-pressure-resistant bolts can maintain their fixing performance during many years of operation, prevent the bolts from failing due to fatigue or aging, and thus extend the service life of the photovoltaic system.
5. Safety during installation
Photovoltaic Bolts with higher strength and pressure resistance can provide better fixing force during installation, ensure the close combination of photovoltaic panels and bracket systems, and reduce loosening problems caused by improper installation. If the bolts are not strong enough or of poor quality, the installation may be unstable, and frequent inspections and adjustments are required after installation, increasing maintenance costs and workload.
6. System safety and accident risks
If the bolts are not strong enough, the system may fail when affected by external impact, wind or other environmental factors, and may even cause the photovoltaic panel to fall off or the equipment to be damaged, increasing safety hazards. Therefore, the design of the bolts must ensure that sufficient fixing force can be provided under all working conditions to avoid system failure or safety accidents caused by bolt failure.

The strength and pressure resistance of photovoltaic bolts are the core factors to ensure the stability and safety of photovoltaic systems. Bolts with appropriate strength and pressure resistance can ensure that photovoltaic panels do not loosen or damage under extreme weather conditions, and can also withstand long-term loads, vibrations and temperature changes to ensure the long-term operation efficiency and safety of the system. The high strength, corrosion resistance and fatigue resistance of the bolt material should be ensured during design to ensure that the photovoltaic system can operate stably under various environmental conditions.