How to choose a PoE switch?Current location: Home > How to choose a PoE switch?
- How to choose a PoE switch?
1. How much power consumption equipment needs to be powered: PoE switches adopt different standards, and the output power will be different. For example: IEEE802.3af does not exceed 15.4W, and due to the loss of transmission wire, the maximum power consumption can not exceed 12.95W Powered by the device. A PoE switch that conforms to the IEEE802.3at standard can supply power to devices whose maximum power consumption does not exceed 25W.
2. How many devices can be powered at most: An important indicator of a PoE switch is the total power of PoE power supply. Under the IEEE802.3af standard, if the total PoE power supply of a 24-port PoE switch reaches 370W, it can supply 24 ports (370/15.4=24), but if it is a single port according to the IEEE802.3at standard, the maximum If the power supply is 30W, it can only supply power to 12 ports at the same time (370/30=12).
3. The number of interfaces required, whether with optical fiber ports, with or without network management, and speed (10/100/1000M).
Question: Is the TB-VIEW PoE power supply stable?
From a technical point of view, PoE technology has been developed for many years and is currently in a very mature stage. Standard PoE power supply is stable and safe enough. However, due to the cost pressure of the current monitoring market, the quality of the PoE switches or cables selected is too low, or the solution design itself is unreasonable, the power supply distance is not arranged or too many high-power devices are connected, and the power supply is insufficient (especially night monitoring equipment) When heating mode is turned on). Therefore, engineering companies generally hold the view that PoE power supply is unstable.
The network monitoring project is different from the ordinary network integrated wiring. The data transmission volume is very large, the power is high, and it requires 24/7 uninterrupted work. The use of quality-guaranteed PoE equipment and wires is the guarantee of the stability of the entire system. All TB-VIEW products will be test one by one in material step, pcb assembly step, finished product step, to make sure the quuality of all products.
Question: Does TB-VIEW PoE power supply switch save energy?
As we all know, one of the major advantages of TB-VIEW PoE power supply is energy saving, but where does energy saving manifest itself? Take the MS series standard PoE power supply switch as an example to solve the doubt.
The PoE power supply switch will automatically adjust the power according to the power supply equipment. For example, when the temperature of an infrared dome camera is low, the heating function power reaches 30Wmax, and the power is 24W max under normal conditions. The PoE switch will automatically adjust the power supply according to the operating status of the dome camera.
The MS series standard PoE switches can set the PoE power supply cycle, and can automatically stop powering the terminals on the designated ports during holidays and night time. This not only saves energy, but can also set flexible usage in certain scenarios.
The MS series standard PoE switch will monitor the status of all ports in real time. If the port status is down, the system will automatically stop powering the port and enter the energy-saving mode, which not only saves energy, but also ensures the stable operation of normal equipment.
Question: Is the greater the power of the PoE power supply switch, the better?
Due to the emergence of high-power devices such as high-definition dome cameras and real-time video phones, network equipment manufacturers are vying to develop PoE switches with higher total power. However, many products only pursue the improvement of total power, ignoring the relationship between power and the number of ports. When the power is large, the overall cost of the equipment will inevitably increase. As a result, the PoE switches selected by users are not practical and cost-effective.
Therefore, in actual deployment, you should first determine the power and number of PD devices, and select the most suitable PoE switch.
