Test method for protection level of traffic signal light enclosure solar street light-litelsolar

1. The dustproof test is carried out in a dust test box. The air flow in the box keeps the talc powder in a suspended state. Each cubic meter of space should contain 2kg of talc powder. mass) with a particle size of less than 5 μm. Do not test with talc that has been used more than 20 times. The signal light is hung outside the dust box and works at rated voltage for 1h, then the working signal light is placed in the dust box with the smallest disturbance, and then the fan or blower is started to suspend the talcum powder. After 1min, the signal light power is turned off. Cool down the signal light for 3h while keeping it suspended. The specimens were visually inspected after the test and subjected to a dielectric strength test. 2. Waterproof test Use a water spray test device for waterproof test. The radius of the semi-circular pipe should be as small as possible, and should be compatible with the size and position of the signal light. The water spray hole on the pipe should spray water directly to the center of the circle. The water pressure at the entrance of the device is about 80kPa, the pipe should swing 120°, 60° on both sides of the vertical line, and the time for a complete swing (2×120°) is about 4s. Both ends are adequately sprayed with water. Turn on the power of the signal light, make the signal light in normal working state, and rotate the light around its vertical axis at a speed of 1r/min, then spray water on the signal light with a water spray device, turn off the power of the signal light after 10 minutes, let the light cool naturally, and continue Water spray for 10min. The specimens were visually inspected after the test and subjected to a dielectric strength test.