Q:LED street is a single bead or multiball well

I want to see or choose the multiball ~ I see street in front of my hospital is good ~ ~ is more than the illumination range is also quite good ~ ~ is the kind of small lamps

Q:How to determine the power of LED street light?

Because this situation does not see the chip surface, so it can only be estimated(attention: eundong Street)Supplement:LED street lamp power LED street lamp power and rural branch city road has no clear standard, but in general: LED lamp power city road about 80W-250W LED Street Village Branch power about 30W120W.

Q:How is the minimum illuminance of LED street lights Emin obtained? How to calculate?

Minimum illumination Emin, if you go to calculate or use lighting software (DIALux) simulation, you can get the minimum illumination Emin, how to simulate this? This is not clear

Q:Why do street lights use bat wings to match the light curve?

The bat light curve of the street lamp is based on the light distribution of the common high-pressure sodium lamp. Now the LED street lamp is just imitating. The bat wing curve gives full use of light. LED light is straight scattered, not light, glare, uneven radiation and other issues.

Q:Do ballast ballasts need to be used for starting the LED street lamp?

LED requirements are constant current power supply, some can also use switching power supply, but the cost is relatively high

Q:What are the advantages of LED road lights?

Conducive to environmental protection. LED light for all solid body, shock resistance, impact resistance is not easy broken, no pollution.

Q:Why does a LED street lighting system come with a phase light?

A phase line is already AC220

Q:What ballast does the street lamp use?

Inductance ballast, and generally use sodium lamp. The color of sodium lamp is yellow, not dazzling

Q:How much is the LED terminal voltage of the solar street light controller v?

This voltage is often the voltage of the LED designer, not every vendor is the same, you can directly use the meter to measureHowever, I have contacted 2 companies of solar street light controller, output voltage is 12V, can be verified

Q:What is the actual service life of the LED street lamp?

In good heat dissipation, rated current work, with constant flow drive, high quality LED life up to 50 thousand small season