Everything You Need to Know About CCTV Power Supplies
If you are planning to install a CCTV system, it is important to understand the role of CCTV power supplies. A CCTV system relies on a stable and reliable power supply to function properly. In this article, we will discuss everything you need to know about CCTV power supplies, including the different types of power supplies, their features, and how to choose the right one for your CCTV system.
Types of CCTV Power Supplies
There are two types of CCTV power supplies: centralized and decentralized. Centralized power supplies are typically used in larger CCTV systems where multiple cameras are installed. They provide power to all cameras from a central location. Decentralized power supplies, on the other hand, are used in smaller CCTV systems where only a few cameras are installed. They are usually installed near the cameras and provide power directly to each camera.
Features of CCTV Power Supplies
CCTV power supplies come with a variety of features, including voltage regulation, surge protection, and battery backup. Voltage regulation ensures that the power supply delivers a stable voltage to the cameras, which is important for their performance and longevity. Surge protection helps protect the cameras from power surges that can damage them. Battery backup ensures that the cameras continue to operate during power outages.
How to Choose the Right CCTV Power Supply
Choosing the right CCTV power supply depends on the number of cameras you have, their power requirements, and the distance between the cameras and the power source. It is important to choose a power supply that can deliver the required voltage and current to all cameras, and that has enough capacity to handle any additional cameras that may be added in the future. In addition, you should consider the quality and reliability of the power supply, as well as any additional features you may need, such as surge protection or battery backup.
Power Source for Security Cameras
12V DC is the most typical power supply voltage for security cameras. Yet it’s not your only choice. There are also wireless security cameras that use solar or battery power.
Inexperienced installers find that real-world installations require the addition of additional power supply because the power capacity is insufficient. Calculating the total required power supply does not simply involve adding the rated power of each security camera together because each camera requires a significant amount of electricity to switch on as well as for transmission. The correct technique to determine the actual power supply needed for security cameras is to multiply the rated power by 1.3. You must also take your power budget and cable usage into consideration.
The AC24V power source was selected because, for a given transmission distance, higher voltages result in lower energy use. The camera can receive sufficient power from high voltage. In the meanwhile, you can use a sync power supply to synchronize the vertical frequency of images across numerous devices while debugging security cameras with AC 24V.
How to calculate a group of cameras’ power outage
If you need more cameras or 8 or 16 channel CCTV camera systems, use a distribution box for best performance. Without the need for several power adapters, you may connect and control the power wire of each CCTV camera while also gracefully routing power wires with a security camera power supply distribution box. For organizing your cameras, power supply distribution boxes or splitters would be preferable.
The calculations below are done assuming we have 16 cameras to install in a DVR and that the source will only be utilized for the cameras because the recorder already has a source:
16 cameras, each drawing 0.35A (350mA):
16 x 0.35 = 5,6A
Taking into account the 80% maximum capacity:
5,6 / 0,80 = 7A
For the remaining cameras, repeat the procedure, separating the connectors that haven’t been used yet. Eight cameras would be located in each of the connector pairs (V- V+) in the aforementioned example. In actuality, it’s suggested to get a power supply with extra connectors to facilitate installation.
How Can I Give Security Cameras Enough Power?
During the actual installation, many cctv camera installers find that the power capacity is insufficient and must add more power. Calculating the total required power supply does not simply involve adding the rated power of each security camera together because each camera requires a significant amount of electricity to switch on as well as for transmission. Cctv The correct technique to determine the actual power supply needed for security cameras is to multiply the rated power by 1.3. You must also take your power budget and cable usage into consideration.
Think about the following example:
A security camera’s rated power consumption is 4W when 100 of them are put in a commercial building. How can I calculate how much power I’ll need?
Security camera power consumption is 4W x 100 units x 1.3 = 520W.
After consumption, the necessary power rating is required. 520W x 1.3 = 676W
Budget for electricity and cable consumption: 676W x 1.3 = 878W
All security cameras need a power source to operate. Power converters and power boxes are commonly used in security camera systems. When installing four cameras or fewer, the majority of installers will use a power adapter and splitter; however, when installing more than four cameras, they will use a power distribution box from a reputable enclosure manufacturer. Be sure the power adapter you buy complies with the voltage and amperage specifications for your cameras.
A CCTV power supply box, often referred to as a security power distribution device, can be used by security camera installers to concentrate the power source of multiple cameras to one area. Using RG59U siamese cable or video baluns makes wiring neater and simpler to operate. Each camera can be connected to a single power supply box rather of needing its own independent power source.
It is easy to utilize the CCTV power supply box; just run your cabling and connect the 2-wire leads from your Siamese cable’s power end to the screw-terminal panel inside the power supply box. To finish the installation, connect the power box to a standard 110V AC power outlet. There is no justification for keeping an outlet near your cameras. Choose the output voltage and amperage that best suit your cameras from the two that CCTV Camera World offers for power distribution boxes.
Conclusion
CCTV power supplies are an essential component of any CCTV system. They provide the power needed to keep the cameras functioning properly and protect them from power surges and outages. When choosing a CCTV power supply, it is important to consider the number of cameras, their power requirements, and the distance between the cameras and the power source. With the right CCTV power supply, you can ensure that your CCTV system functions reliably and provides the security and surveillance you need. For more information on CCTV power supplies, visit firstsolution.com.sg/cctv.
