“People who usually know it know that the centralized power supply mode is to connect a 12V centralized power supply at the 220V power supply, and then use 2*1.0 red and black power cables to connect to the camera respectively. The 12V power supply distance cannot exceed 100 meters. After connecting a single power cord connector, connect the single power cord connector to the surveillance camera power connector. The centralized power supply mode refers to the centralized power supply to the front-end load using a 12V switching power supply in the monitoring room or a certain intermediate point. Compared with the independent power supply mode, the biggest difference is that one power supply can provide power supply for multiple cameras.

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People who usually know it know that the centralized power supply mode is to connect a 12V centralized power supply at the 220V power supply, and then use 2*1.0 red and black power cables to connect to the camera respectively. The 12V power supply distance cannot exceed 100 meters. After connecting a single power cord connector, connect the single power cord connector to the surveillance camera power connector. The centralized power supply mode refers to the centralized power supply to the front-end load using a 12V switching power supply in the monitoring room or a certain intermediate point. Compared with the independent power supply mode, the biggest difference is that one power supply can provide power supply for multiple cameras.

Schematic diagram of centralized power supply:

The role of centralized power supply

The management objects of the data center mainly include infrastructure and IT infrastructure, such as power distribution, network equipment, security, etc.

The purpose of centralized monitoring is to be able to monitor the operation of infrastructure and IT infrastructure through the application of management and technology, so as to realize real-time discovery and notification of faults and abnormalities; Administration, incident management, problem management, and compliance management provide the basis for analysis and ultimately achieve the goal of high data center availability.

Advantages of centralized power supply

1. Low cost

Although the centralized power supply mode is adopted, the cables used are often more than those used in the independent power supply mode, but thanks to the high cost performance of the centralized power supply, the cost of the power supply system using the centralized power supply mode is often the most cost-effective power supply system. .

2. Centralized maintenance is simple

The centralized power supply mode is adopted, the line laying is convenient, the construction is convenient, and the management is convenient.

3. Low overall energy consumption

It has been proved by practical engineering cases that the total energy consumption of the centralized power supply system is lower than that of the independent power supply system.

Disadvantages of centralized power supply

1. The early configuration is complex

Surveillance cameras need a large starting power at the moment of startup, and long-distance power transmission will cause losses, so the power of centralized power supply is not the sum of the power of all surveillance cameras. Adopting the centralized power supply mode requires engineers to have a detailed understanding of the entire monitoring system in order to make a reasonable plan.

(Actually, since the starting current of the camera is very large at the moment of startup, coupled with the loss of long-distance transmission in the project, the power supply required by the surveillance camera is not simply the sum of the rated power of all cameras. The correct way is Add the rated power of the cameras of the entire surveillance system and multiply by 1.3 times, this is the actual power required by the cameras, and then add about 30% of the loss; finally, add a 30% margin for future expansion. )

2. There is a possibility of paralysis of the monitoring system

Once there is a problem with the power supply system in the centralized power supply mode without UPS power supply, the entire monitoring system will not work normally and fall into a state of paralysis.