Whether in hydroelectric power plants, thermal power plants or wind power plants, or even petrochemical or nuclear power plants, the monitoring system will set up cameras at certain commanding heights or in open areas in order to meet the demand of monitoring coverage. As soon as a lightning strike strikes, there is an unavoidable risk.
In the security monitoring system of the energy industry, there are generally two lightning protection methods. One is grounding and the other is lightning protection. Grounding is an important measure to protect the safety of people, equipment, and power supply. It is an indispensable security measure. The lightning protection is based on the environment and requirements of the installation of the video surveillance system. Although not absolutely necessary, the importance of grounding and lightning protection is a mechanism for mutual cooperation. Therefore, importance in the security monitoring system of the energy industry cannot be ignored.
Monitoring front-end grounding and lightning protection measures
1. Outdoor cameras should be equipped with lightning rods, and separate grounding lines should be used to isolate the power and image signals of the monitoring equipment so as to avoid interference with currents and damage to the lines. Lightning rods should be erected higher than the camera. It is within the range of the virtual three-dimensional vertebral body that is 45-60 degrees down from the tip of the lightning rod. It is the safety scope of the camera. When the lightning rod is installed, it should be insulated from the steel of the fixed camera.
2. The grounding of the front-end equipment of the camera should be concentrated on a grounding bus at the terminal part, so that the grounding of the entire monitoring front-end equipment can reach the requirement of no ground potential difference, otherwise it may cause a potential difference to the ground loop and cause the equipment to be burned.
3. The indoor front-end camera should be connected to the grounding terminal of the shared terminal by a grounding wire, and a non-fuse breaker and a leakage breaker must be installed on the power supply of the front-end device. At the same time, the 3000kV can be installed under the permit. Avoid inductive or conductive lightning damaging equipment.
4. After the outdoor camera is grounded, the test grounding resistance is less than 10Ω, and the grounding rod should be installed according to the standard three-point impedance test.
In the security monitoring system of the energy industry, there are generally two lightning protection methods. One is grounding and the other is lightning protection. Grounding is an important measure to protect the safety of people, equipment, and power supply. It is an indispensable security measure. The lightning protection is based on the environment and requirements of the installation of the video surveillance system. Although not absolutely necessary, the importance of grounding and lightning protection is a mechanism for mutual cooperation. Therefore, importance in the security monitoring system of the energy industry cannot be ignored.
Monitoring front-end grounding and lightning protection measures
1. Outdoor cameras should be equipped with lightning rods, and separate grounding lines should be used to isolate the power and image signals of the monitoring equipment so as to avoid interference with currents and damage to the lines. Lightning rods should be erected higher than the camera. It is within the range of the virtual three-dimensional vertebral body that is 45-60 degrees down from the tip of the lightning rod. It is the safety scope of the camera. When the lightning rod is installed, it should be insulated from the steel of the fixed camera.
2. The grounding of the front-end equipment of the camera should be concentrated on a grounding bus at the terminal part, so that the grounding of the entire monitoring front-end equipment can reach the requirement of no ground potential difference, otherwise it may cause a potential difference to the ground loop and cause the equipment to be burned.
3. The indoor front-end camera should be connected to the grounding terminal of the shared terminal by a grounding wire, and a non-fuse breaker and a leakage breaker must be installed on the power supply of the front-end device. At the same time, the 3000kV can be installed under the permit. Avoid inductive or conductive lightning damaging equipment.
4. After the outdoor camera is grounded, the test grounding resistance is less than 10Ω, and the grounding rod should be installed according to the standard three-point impedance test.
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