Hazards and Identification of Poor Quality Industrial POE Switches

Industrial poe switches have become very useful power supply devices in our daily lives, and there are too many network devices that require them, such as surveillance cameras, wireless APs, etc., to achieve synchronous transmission of data and power through network cables. However, there are various types of industrial PoE switches on the market, and after using them for a period of time, it is inevitable to encounter various problems, which is related to the quality of the product.

Some fake PoE switches on the market, in order to save costs, do not add PoE chips and directly force 24/48V DC power (or claim SPoE) to the spare pins of the network port, without short circuit protection circuits. There are also MCU PoE switches using 8051 microcontrollers, which are all fake POE switches. Therefore, during use, the following issues and risks may arise:

1. Without PoE detection function, it will not detect whether the device supports PoE power supply when connected to a network device, and will directly perform forced power supply. When the connected device does not support PoE power supply, such as computers, routers, etc., there is a high probability of burning out the device during connection, which can even lead to a fire risk! Even if it is connected in the early stage, it may burn out when connecting to other devices that do not support PoE during maintenance or without the knowledge of others.

2. Design of no power overload protection and priority power supply protection. Through overload testing of a certain brand of PoE switch, the problem and risk display are more obvious: after the power exceeds, the machine continuously restarts, all ports cannot be powered on, and all images are lost, or when the camera is fully loaded, it is not overloaded during the day, but overloaded after turning on infrared at night, and all images are lost, which greatly affects the monitoring of key areas.

3. Without lightning protection design, it is easy to be damaged by induced lightning strikes, and the product maintenance cost is high.

4. The power supply does not have national mandatory 3C and safety certification. Power supply is a high-voltage device, and safety is very important. Some manufacturers, in order to save costs and eliminate some safety devices, cannot pass the national 3C certification. This type of product poses significant safety hazards when used in engineering, and in severe cases, it can also cause fires!

How should we identify inferior industrial PoE switches in response to the above issues? In general, only high-quality industrial PoE switches can provide stable power supply, while low-quality industrial PoE switches face various tests. How can poor quality PoE switches be distinguished? There are generally three situations:

1. Production identification

A good PoE switch should include the following information: manufacturer's name, company name, trademark, or other identification mark. In addition, there are clear model codes, model specifications, power supply standards, and total PoE power supply power. The identification of low-quality industrial PoE switches may not be too clear.

2. Full load test

When fully loaded with surveillance cameras, it is a time to test the "truth" of industrial grade PoE switches. Some industrial PoE switches claim to be able to provide full load power, but once fully loaded, there may be crashes, unclear graphics, and other phenomena. The above situation occurs because the PoE switch has insufficient power supply and cannot fully power the receiving equipment. So only by using high-quality power supplies and other components, and undergoing full load testing, is the most "safe" PoE switch.

3. Heat dissipation design

One of the functions of industrial grade PoE switches is power supply. During this process, a portion of the electrical energy needs to be consumed due to losses. After the electrical energy is converted into thermal energy, some of it is lost in the air, while the other part is absorbed by itself, causing the temperature of the equipment to rise. In fact, it is a common phenomenon for industrial PoE switches to generate heat during normal operation, so whether they can effectively dissipate heat is related to whether the equipment can operate stably for a long time. If the heat dissipation is not good, it will shorten the product's service life and cause a decrease in safety performance.

The heat dissipation design and components used in the production of industrial grade PoE switches are very important. High quality industrial PoE switches have side waist shaped heat dissipation holes and metal shell design, ensuring efficient heat dissipation and long-term stable operation of industrial PoE switch products.

Our industrial POE switch series products not only provide excellent industrial grade quality such as vibration resistance, high/low temperature resistance, dust prevention, lightning protection, etc. through fanless heat dissipation circuit design, wide range working environment temperature, and high protection level technology; Moreover, it integrates various rich protocols such as routing, switching, and security, while supporting Public Ethernet Multi Ring Protection Technology (ERPS), greatly improving networking flexibility and enhancing the reliability and security of industrial networks.