Surveillance camera power must see four coups

The application of surveillance cameras is already very extensive. Then, consumers should choose the power supply while selecting the surveillance camera. The following small series will give you an analysis!

1. The surveillance camera indicates DC12V/AC24V universal. What kind of power supply should I choose?

A: Select AC24V monitoring power supply, because the same transmission distance, the higher the voltage, the smaller the loss. When the voltage is high, the load can get a sufficient voltage. At the same time, due to the use of AC 24V, when debugging the camera, the power supply synchronization can be selected, so that the image field frequency of different devices in the entire monitoring system can be kept synchronized.

2. How to properly configure the camera power supply of the entire monitoring system?

A: This problem often makes it difficult for young and inexperienced engineers. Many of the solutions have found that the power supply capacity of the original design was not enough, and additional equipment was needed, causing the phenomenon of smashing with the party. In fact, because the camera starts at a moment, the starting current is very large, and the loss of long-distance transmission in engineering, the power required by the surveillance camera is not simply added to the rated power of all cameras. The correct way is to add the power of the camera of the entire monitoring system and multiply by 1.3 times. This is the actual power required by the camera, and then add about 30% of the loss. Finally, add 30% of the margin. Expansion will be used in the future.

3, monitoring camera power supply configuration, what is the most taboo?

A: The most taboo is that the entire monitoring system shares a power supply. The reasons are as follows:

1. When the system is being repaired, it is often necessary to turn the power on and off. All the cameras are started at the same time when the power is turned on, the starting current is particularly large, and the impact on the power supply is great, and the power supply will be burned seriously.

2. All surveillance cameras share one power supply. When the power supply fails, the entire closed-circuit monitoring system is paralyzed. In particular, some important entrance and exit images cannot be monitored, which may cause unnecessary trouble.

4. What problems should be paid attention to when selecting the power supply for surveillance cameras?

Answer: First: When connecting the camera to the power supply, do not connect the camera with a long distance and the surveillance camera with a close distance to the same power supply. If connected to the same power supply, the power supply voltage is high, the camera will be burnt at a close distance, the power supply voltage is low, and the camera with a long distance has no image. The surveillance cameras that are farther away should be connected to the same power supply as much as possible, and the closer cameras should be connected to the same power supply.