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sales@zillion-techs.com # How to Calculate the Power of the Infrared Video Camera?

## 1. Application advantages of infrared video cameras

The infrared video camera has been widely used for its long night vision distance, strong concealment, stable performance and other outstanding advantages since its introduction. The power supply has to be considered in practical application. The following introduces the calculation method of the power of the infrared video camera.

## 2. How to calculate the power of infrared video cameras

The power required by the IR surveillance camera is not simply the sum of the rated power of all cameras because the infrared video camera has a very large current when it is started and there is a loss of long-distance transmission in engineering.

The correct way of calculating the power of the infrared video camera is to add the rated power of the cameras of the entire surveillance system and multiply it by 1.3 times, it is the actual power required by the camera. Then, a loss of around 30 should be added and finally add a margin of 30 for future expansion.

For example, there is a business building with 100 IR surveillance cameras and the rated power of each surveillance camera is 4W. How should we configure the camera power supply?

Based on the calculation method above, the rated power of the camera is 400W (4W*100), and the actual power used by the camera is 400W*1.3=520W. After the consideration of the loss, the power required by the camera is 520W*1.3=676W. Then, with the power margin, the final power supply that the camera needs to configure is 676W*1.3=878W.

In addition, if an electric zoom lens is attached when calculating the power of the infrared video camera, the current around 800mA required by the motorized lens should be added in order to obtain the operating current required by the entire infrared zoom camera.

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