Led underwater lamp, also known as LED underwater lamp, is a kind of underwater lamp. Simple refers to the lamp installed under the water. The surface is small, elegant and elegant. Because it is placed in the water, the difficulty of implementing the lighting project has also increased, so the key points of utilization are very important.
The installation height of lamps shall be appropriate
The LED underwater lamp is installed about 50-100mm below the water surface. If it is too deep, it will affect the light effect, and if it is too shallow, it will affect the service life due to the violent impact of the falling water body.
Lamps are evenly distributed
Led underwater lamp is set to aim at a certain purpose, so as to determine the orientation, direction and color of the lamp according to the approximate height of the purpose. When strong illumination is necessary, in the environment without special requirements, it is better to choose several similar lamps than several high-power lamps. This brings convenience to the preparation and repair of lamps.
The cables of lamps shall have satisfactory load margin
The conductor cross-sectional area of the cable is the condition to make the current flow. If the area is too small, the current consumption in the conductor will increase and the luminous power will decrease greatly; If the area is too large, the cost will be added. The conductor section of ordinary 12v100w \ \ nled underwater lamp shall not be less than 2. 5mm, 12v300wled underwater lamp shall not be less than 6mm, and the lamp is not allowed to be directly connected with the cable ends in the water.
The orientation of the transformer should be reasonable
The orientation of the transformer is directly related to the cable length of the LED underwater lamp and the luminous brightness of the lamp, so it should only shrink the cable length and reduce the voltage consumption even if it is close to the pond. The transformer shall be installed in the rain proof electrical box, or under the leisure chair, or in the hidden place of the building sketch.
The output voltage of the transformer shall be appropriate
For quiet led underwater lamp, 12V input voltage must be supplied, which is completed through transformer. Although the transformer outputs 12V voltage, the real voltage of the lamp will be lower than 12V due to wire consumption, and the luminous brightness will drop significantly. Therefore, the output voltage of the transformer shall be accurately supplied according to the length of the conductor, considering its consumption, so as to ensure the true 12V input voltage of the lamp. In addition, the cable length of LED underwater lamp on the unified transformer shall be the same, so that the luminous brightness between lamps is connected evenly.
The input voltage shall be firm
In fact, the input voltage also directly affects the lifetime and luminous effect of lamps. The test shows that when the input voltage is 5% higher than the external voltage, the life will shrink by 50% of the characterization value; When it is 10% higher, as long as the longevity reaches 30% of the characterization value, the brightness can increase, but the luminous power only increases by 20%; On the contrary, if the input voltage is 5% lower, the service life is doubled, and the luminous power is only lost by 15%. Therefore, some engineering companies prefer to use depressurization after measuring the gains and losses.
The total load of lighting power supply shall be three-phase balanced
Ordinary transformers are all single-phase 220V input voltage, so when the transformer is connected to the power supply, the power of several transformers shall be evenly distributed on the three phases to prevent electrical disadvantages caused by three-phase imbalance.