What is this "PoE"? It is to expand the power supply distance over Ethernet. What everyone should know about this PoE is the technology that can power and transmit data to the device simultaneously through Ethernet cables. However, its original power supply transmission distance will be limited. We usually need to increase the power supply distance, and there are several ways to try.
First of all, there is one thing to consider using better quality cables. Good quality low attenuation cables that certainly help. Generally speaking, if you choose this standard CAT6 and CAT6a cables, they can better reduce the signal attenuation, which can increase the effective distance that PoE can transmit and supply power to a certain extent. Also, industrial-grade cables often have very low attenuation rates. If the budget is appropriate, you can consider choosing this type of cable, which is helpful for expanding the distance.
1. We can also think about using PoE extenders. This thing plays a relay role. If PoE has been transmitted to a certain distance, then put the PoE extender in the middle of the line to further amplify the signal and electrical energy, which is like adding a force to the power transmission and continue to extend and transmit. The expanders on the market have different expansion capabilities and specifications, and can be selected based on their own network size, equipment used and the expected transmission distance.
2. In addition, for devices that do not have particularly strict bandwidth requirements, you can consider reducing the speed. This method is quite effective. Everyone knows that the level of data transmission rate and the degree of signal attenuation are mutually influencing. So as long as you lower the transmission rate, it will be like driving slower and you can go to a farther destination at the same gas station. Then the effective distance of PoE power supply will be expanded.
Some people asked me, how can I expand the distance by choosing a multi-core cable? There are several cores in a multi-core cable, which is more than ordinary cables. Generally, a few more copper cores can help share the current when working, and it will enhance this distance within a certain range. But it cannot be unlimited. It is limited because it still has its own losses, and it is impossible to truly solve the fundamental transmission capability problem. It also needs to be matched with a better way.
Then some people may ask, if the power supply voltage is increased, can the PoE distance be expanded? The idea sounds good. In principle, increasing the power supply voltage can overcome the resistance of the wire itself, and the voltage will be reduced. But it is not recommended to do so! Many of the PoE devices that people use now must follow relevant power supply standards. If the voltage is increased at will, it may affect the service life of the device. Maybe it will be more dangerous to burn the device directly.
Let’s compare it with wireless technology. For traditional wireless distance expansion, many of them use wireless relay routing and other devices, but many of them face the problem of interference and instability. It's different from expanding distance by enhancing PoE power supply. PoE can ensure reliable transmission over network cable transmission, and at the same time serve and power multiple Ethernet-dependent devices. This is much more stable and easier to use than wireless!
In fact, the combination of different methods of extending this PoE distance may be super good. You can first choose a better cable routing and add a PoE extender in a reasonable location. It is also necessary to adjust the appropriate speed for devices that do not have any feelings about transmission bandwidth. If you use it in conjunction, it may exceed the expected expansion transmission distance. Just do it like this. Provide global procurement services for weak current intelligent products! Moreover, there are always equipment requirements for various types of scenarios that require network configuration environments. Just select and debug according to your own different requirements for the network. Just do it like this and feel at ease!
I think that there are so many ways to expand PoE distances, which can always help users worry about this. If you carefully study and make some matching according to actual needs, you can find a very good solution!
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