In our daily lives, fires caused by outdoor LED screens, LED light boxes, and LED lighting are not uncommon, among which the use of unqualified LED switch power supplies and improper installation are important reasons. So it is very necessary to choose a qualified LED switch power supply and install it correctly. Jiangmen LED waterproof power supply manufacturer will share with you the knowledge of LED switch power supply and how to choose a good switch power supply.

So how to choose a qualified LED switch power supply correctly? How to install LED switch power supply correctly? We need to pay attention to the following five issues: 1. Choose a power supply that meets the requirements of the national standard; 2、 Choose a power supply with short circuit and overload protection; 3、 Choose flame-retardant power supply components; 4、 Select cables that meet national standard requirements; 5、 The correct connection method for power supply and illuminated characters.

In outdoor signage projects, the working environment of LED switch power supplies often has to withstand extreme weather conditions. For example, in winter in the north, it is extremely cold, with temperatures of minus thirty degrees Celsius being very common. At this time, in order for the LED switch power supply to work properly, it is necessary to have a low-temperature start function to ensure that the illuminated characters can start normally at minus 30 degrees Celsius; In the south, especially during the rainy season, fog, humidity, and dust are the harsh conditions that test LED switch power supplies. To work normally in such an environment, it is necessary to ensure that the power supply products are treated with three protections, moisture-proof, dustproof, and anti fog, and can be used normally by the sea and in humid weather.

To purchase LED switch power supply products that meet the above quality requirements, please choose qualified products that meet national standards. In fact, China had already put forward the requirement for power supplies to pass the national 3C certification as early as a few years ago. However, currently there are very few power supply manufacturers that truly meet the 3C requirements. Basically, the products of small-scale power supply enterprises do not have 3C certification. However, as a leading LED power supply enterprise in China, the vast majority of products from Chenglian Power Supply have passed the domestic 3C certification. Let customers feel at ease when making purchases. To ensure the safety of LED switch power supplies, choose products with short-circuit, overload protection, and flame retardant functions.

During the use of LED switch power supplies, it is common for the power supply to catch fire due to short circuits or be damaged due to overload (power overload).

The so-called short circuit protection requires cutting off the power supply in a very short time after the occurrence of a short circuit fault, protecting the load from the impact of high current, and also protecting the safety of LED switching power supply.

And overload protection requires the LED switching power supply to act instantaneously under the influence of short-term overload surge current or short-circuit current, protecting the safety of the LED switching power supply.

Choosing an LED switch power supply not only has short-circuit and overload protection functions, but also flame retardant function is another important barrier to protect the safety of the power supply. If there is a fire. If the flame generated by the power supply cannot be flame retardant, it will cause the entire luminous character to catch fire like the scene at the beginning, and the consequences will be unimaginable. Therefore, power supplies, circuit boards, components, etc. with flame retardant function should be selected. So even if the above situation occurs with the power supply, it will not affect the luminous characters.

In short, when choosing LED switching power supplies, it is important to choose branded products in order to ensure their quality and safety. The capacitors used in the LED switch power supplies produced by Changzhou Chenglian Power are branded capacitors with long lifespan and many advantages. At the same time, it has protection functions against short circuits, overvoltage, overload, overheating, etc., ensuring that users have no worries.

Ensuring the safety of LED switch power supply applications and proper installation is particularly important.

Ensuring the safety of LED switch power supply applications requires not only selecting high-quality products that meet standards, but also proper installation. The correct installation of the power supply requires attention to the following three issues: 1. Choose cables that meet national standard requirements; 2. Pay attention to the correct connection method when connecting with luminous characters; 3. Requirements for installation environment of power supply.

At present, the quality of cables in the domestic market varies greatly. Many manufacturers sell copper-clad aluminum wires for profit, which can pose significant risks during use. Insufficient overcurrent capability can lead to excessive cable current, overheating, and fire, which can also harm the entire luminous character. In practical cases, there is a mnemonic for choosing the appropriate cable: "Multiply 2.5 by nine, and subtract one from the top in order." This refers to copper core insulated wires with various cross-sections of 2.5mm and below, whose current carrying capacity is about 9 times the number of cross-sections. For a 2.5mm wire, the current carrying capacity is 2.5 × 9=22.5 (A). At the same time, the neutral wire of the power output circuit should use a thicker cable than the output terminal.

When it comes to the correct connection between power supply and luminous characters, we know that many outdoor luminous characters are currently installed on walls or at high altitudes. Many are far away from the power supply, which also leads to a problem: voltage drop. The calculation formula for line voltage drop is △ U=(P * L)/(A * S), where: P is the line load, L is the line length, A is the material coefficient of the conductor (approximately 77 for copper and 46 for aluminum), S is the cable cross-section.

Article source: Jiangmen LED waterproof power supply manufacturer http://www.gddpdz.com/