Monitor where lightning protection measures need to be done in the monitoring system

Because the monitoring system security equipment is usually installed in the outdoor open environment, it will be very susceptible to lightning strikes, which will seriously endanger the safety of the security system, so the security system must need a perfect lightning protection and surge protection program.

1. Outdoor equipment protection.

Direct lightning protection: at the upper end of the support rod of the outdoor camera, install a small lightning rod (, the height is higher than the camera, the down lead of the lightning rod can directly use the metal rod itself, and the artificial down wire can also be laid, and the down wire is connected to the ground net at the lower end. The resistance of the ground grid should be less than 10 ohms.

Induction lightning protection of the camera: install the lightning protector on the power supply, control line and line of the camera, install the lightning protector PTV-BNC on the signal line, install the lightning protector PT-V485 on the control line, and install the power line PT-DM40 2

It is also possible to use the three-in-one centralized lightning protection device PTV-3 220 to fully protect the three signals. The ground wire of this SPD is connected to the ground grid below.

2. Lightning protection protection of monitoring computer room:

First: power lightning protection.

The first-level power surge protector is installed on the main distribution of the building, the model is: PT380-80KA, as the first-level power lightning protection of the entire monitoring room.

Install the second-level power lightning protection box (model: PT220-40) on the power distribution in the computer room or before the UPS power supply, as the second-level power lightning protection of the equipment in the computer room.

Install the lightning protection socket ZGJ-10 at the front end of important equipment such as displays and industrial computers.

Second, lightning protection of the control line.

Fourth, indoor equipotential bonding.

Set up an equipotential terminal block in the machine room, and connect all the ground wires of the lightning protection device and the equipment of the metal shell to the terminal block.

3. Grounding system.

If the distance between the two ground nets is less than 20 meters, the two ground nets should be connected together. The resistance of the camera and lightning rod to the ground grid should be less than 10 ohms. The grounding body can be made of galvanized steel pipe or galvanized angle steel.

The ground network of the monitoring room should be less than 4 ohms. Considering the limitation of grounding space, the high-tech Putian grounding system 2000 can be adopted, which includes Zhengzhou Putian grounding module PTD-3 and copper-plated grounding electrode, with good grounding effect and strong corrosion resistance.

Electronic system equipment is often subject to external instantaneous overvoltage interference, which will affect the stable operation of user equipment, and even cause equipment damage in serious cases. Lightning strikes are a very common phenomenon of overvoltage, occurring about 8 million times a day worldwide.

Because the security equipment is usually installed in the outdoor environment, it will be very susceptible to lightning strikes, which will seriously endanger the safety of the security system, so the security system must need a perfect lightning protection and surge protection program.

In the RS-485, BNC, DC12V, AC24V, Ethernet and other ports on the security equipment, Langtuo Electronics has a series of perfect lightning protection solutions.

1) RS485 port.

2)dc12v/24v

4) Ethernet port.

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