I believe everyone is familiar with LED underwater lights. Whether it is in reality, or in movies and TV, we can always see it, such as landscape lighting projects, cruise ships at night, and private luxury swimming pools.
However, the installation of LED underwater lights is not easy. Since the voltage of LED underwater lights is generally 12V, and the power supply we use is generally 220V, it is necessary to add a transformer to change the voltage of the power supply. However, transformers are not easy to use. , Today we will talk about the requirements for the use of transformers.
Transformer requirements
Generally speaking, the total power of LED underwater lights should also be equipped with a suitable transformer. The total power of the transformer is recommended to be at least 130% of the total power of all powered lamps. If the distance is far, the power should be appropriately increased to ensure the normal power supply of the lamps.
Why do lamps with a long distance need to increase the power appropriately?
This is because the outgoing line is too far, which will lead to insufficient buck current at the end. Although the lamp is good, but the voltage cannot reach it, the lamp will not light normally. Because the wire itself has resistance, it will share a part of the voltage, resulting in the voltage of the remote underwater lamp being less than 12V.
Chongqing Xinyuanhui Optoelectronics Technology Co., Ltd. recommends:
The distance between the underwater light and the transformer outlet should not be too far. If the distance is too far, the power of the transformer can be increased. In addition, the path size of the main line should also be considered.
For example, there are 12 18W underwater lights, and the total required power is 18x12=216W, then the transformer power should be: 216*130% = 280.8W, and a 300W transformer should be used.
