It is not easy to protect cameras from lightning. We are Shenzhen Anxin Technology Co., Ltd. and have been doing lightning protection for more than ten years. At the beginning, the lightning protection of cameras was not good. Later, we continued to summarize, I have also developed several lightning arresters specifically for security systems. Now the lightning protection efficiency is basically over 90%. Summarizing the experience over the years, the following points are as follows:
1. Lightning protection is a comprehensive system. It is useless to only understand the specifications and theories. You must have rich practical experience;
2. First, protect yourself from direct lightning strikes and install a lightning rod. How high it should be installed must be calculated;
3. Each camera should be grounded, and the resistance should not exceed 4 ohms. At the same time, pay attention to the grounding dispersion. Area;
4. The power supply lightning protector must be installed in the monitoring center and the camera. Note that the ground wire cannot be too long; some cameras have transformers, which are not very reliable, and lightning protectors cannot be missing; < /p>
5. For video lightning protectors and control line lightning protectors (for dome cameras/PTZs), pay attention to the protection level of these lightning protectors. In order to prevent their products from being damaged, some product manufacturers use this The value is a bit high (don’t look at the label, look at the actual level), but our own products have a very low value, and the camera protection effect is very good;
6. Lightning protector in Article 5 The grounding wire should be as short as possible, as short as possible, and the equipment itself and its surroundings should be at equal potential;
7. It is important to shield the camera line well. Of course, some line shielding modifications are difficult to perform, and our own products can make up for the defects of line shielding (this is patented);
8. There are specialties in the art industry, and all I can do here is To give you a rough idea, it is easy to do lightning protection, but it is not easy to do lightning protection without causing problems. I am very interested in these difficult projects, and the contact information is in my space. (Pang Gong)