Q:Does the LED street lamp need lightning protection?

Need to install power supply lightning protection, also known as surge protector

Q:What is the role of heat phase change material on a LED street light?

Mainly to play the role of heat dissipation! I don't agree with that upstairs. The heat dissipation of LED street lamp can be solved by some auxiliary things. For example, a small fan with a stronger coefficient of heat is used as a shell...... And so on, these can solve the problem of heat dissipation!

Q:How many LED lights are there in the downtown area, W?

Depends on the width of the road, the normal is 250W metal halide lamp, there are 400W.. Used at intersections,

Q:I have just entered the line, I would like to know what the main quality of LED street lighting?

I am a technician of LED power supply company, and I have been working for several years.

Q:What is the active power of LED street lamp? What is the relationship between input voltage and current and power?

When the alternating current through the load resistor, and the resistance of the AC voltage and AC current through the resistor is the same phase, and between them the phase angle phi = 0 degrees, while the active power consumption in the resistive load, power grid to supply energy. When the alternating current through the pure inductance load, phase AC voltage on the advanced phase of current 90 degrees and the angle between them phi = 90 DEG, produce reactive power in inductive load, power supply of electric energy in the inductor for temporary storage and magnetic energy back to the grid into electricity such a periodic cycle, results for grid is not energy, so that the "reactive power", but "reactive power" and "reactive current" still exist. When alternating current through pure capacitance load, also similar to this, but the phase AC voltage on the lag phase of current 90 degrees and the angle between them phi = - 90 degrees.

Q:The power supply voltage of LED street lamp is the same, but the wattage is different. Can the power supply be general?

Although the output voltage is the same, but the 40W voltage with 50W lights do not work, 50W power to drive 40W lights, no problem.

Q:What ballast does the street lamp use?

You should first look at what is the light source, there are high pressure sodium lamp, low voltage lamp, high-pressure mercury lamp, metal halide lamp, ceramic metal halide lamp, LED lamp and energy-saving lamp, fluorescent lamp, electrodeless lamp and so on, to see what, some others do not need to ballast, general use now most of the high intensity discharge lamp, it is need to use high pressure sodium lamp, ballast or electronic ballast

Q:Who knows LED street lamp warm white light and positive white light have what difference, how should choose?

Because the light intensity of the human eye light is higher than that of the warm white light, the naked eye will feel that the white light is brighter than the warm white one.

Q:How to maintain the LED street lamp?

In order to moistureproof, LED should be stored in a dry and ventilated environment, storage temperature of -40 DEG C - +100 degrees, relative humidity below 85%, 100% of LED lighting street cold resistant, high temperature resistant, good choice.

Q:What is the LED Street pressure balancing respirator?

LED lamp pressure balancing apparatus is also called micro PU waterproof breathable valve at home, LED street is a wide application of pressure balance apparatus, such as: LED outdoor lighting, communication equipment, solar photovoltaic, auto controller etc..The role of the LED Street pressure balancing respirator is as follows:1, waterproof, dustproof, anti pollution, protection level IP65~IP68.2, chemical resistance, high and low temperature, anti-aging and so on, improve the harsh environment of the product reliability.3, prevent condensation, fog, and improve product life.4 、 micro heat dissipation and balance pressure difference. Improve product integrity.