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LED waterproof power supply
- May 16, 2017 -

LED waterproof power supply is a kind of LED drive power, is the power supply is converted to a specific voltage and current to drive LED light voltage converter, usually: LED drive power input, including high voltage power frequency (ie electricity) Low voltage DC, high voltage DC, low voltage high frequency AC (such as the output of electronic transformers) and so on. While the LED drive power output is mostly with the LED forward voltage drop to change the voltage constant current source.

It is different from the general LED drive power is waterproof, according to different needs, can be designed for IP65, IP66, IP67, IP68 and other waterproof and dustproof level. Which IP68 level can be completely immersed in the water inside.

According to the power grid rules and LED drive power characteristics of the requirements, in the selection and design of LED drive power to take into account the following points:

1. High reliability

Especially as LED lights drive power, installed at high altitude, maintenance is not convenient, maintenance costs are also large.

2. High efficiency

LED is energy-saving products, drive power efficiency is higher. It is especially important for the power supply to be placed in the fixture. Because LED luminous efficiency with the LED temperature increases and decreased, so the LED heat is very important. Power efficiency is high, its power consumption is small, in the lamp heat is small, it will reduce the lamp temperature. To delay the LED light failure beneficial.

High power factor

The power factor is the load on the grid. Generally less than 70 watts of electrical appliances, there is no mandatory indicators. Although the power is not a single power factor low power on the power of the little impact, but at night we light, similar load is too concentrated, will produce more serious pollution of the grid. For 30 watts to 40 watts of LED drive power, it is said that in the near future, may have a certain degree of power factor requirements.

4. Drive mode

Now there are two kinds of traffic: one is a constant pressure source for a number of constant current source, each constant current source to each LED power supply. This way, the combination of flexible, all the way LED failure, does not affect the work of other LED, but the cost will be slightly higher. The other is a direct constant current power supply, LED series or parallel operation. Its advantage is a little lower cost, but the flexibility is poor, but also to solve an LED failure, does not affect the other LED operation problems. These two forms coexist for a period of time. Multi-channel constant current output power supply, in terms of cost and performance will be better. Perhaps the future direction of the mainstream.

5. Surge protection

LED anti-surge capability is relatively poor, especially anti-reverse voltage capability. It is also important to strengthen this protection. Some LED lights installed in the outdoors, such as LED lights. Due to the load of the grid load and lightning induction, from the grid system will invade a variety of surges, and some surge will lead to LED damage. So the LED drive power to suppress the surge of intrusion, the protection of LED is not damaged capacity.

6. Protection function

Power supply In addition to the conventional protection function, it is best to increase the constant current output LED temperature negative feedback to prevent the LED temperature is too high.

7. Protection aspects

Lighting outside the installation type, the power structure to waterproof, moisture, the shell to light.

8. The life of the drive power should be matched with the life of the LED.

9. To meet the requirements of safety and electromagnetic compatibility.

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