The introduction of light, cable and light source shunt

Street lamp has a high requirement on the light source, especially high lamp, at the time of light source configuration, need to use high pressure sodium lamp and metal halide lamp, because of its big power, high lamp manufacturers today is to introduce high lamp cable.

for friends don't understand the electricity, what is the current, voltage, what is the what power is, what are their respective representative sign? See these data may feel confused about, actually these tedious detail concept you don't remember, after all, we are not an electrician, the ratio of the most important parameters to remember it.

such as a tree height in 25 meters high lamp, its light source is composed of 18 lamps of 400 w high pressure sodium lamp, so this kind of configuration of the light source there are two shunt way, the Yang points ( Two way) And SanLiu points ( Three road) 。 18 if buy 4 core can light source is divided into two road, are two fire in 101. Three road, need to buy 5 core, respectively is three fire in 101.

as to the specifications of the cable we can calculate like this: normally 1 square copper cable can bring the power of 1000 w, but the data is not suitable for high lamp, because first of all we buy cable from percentage above are not up to standard, the second is the electrical loss serious cable is too long.

a lamp power is 400 w, 18 light source of power is 7200 w, so we must be at least 10 square of the cable. Shunt often pay special attention to, if that is the load cable uniform, such as three road, that each route must take 6 lamp, not take seven with six with five. Because they are Shared on the top of the zero line, so must be balanced.

keep in mind that the most basic point is no problem, important is two, one, the cable need to add a few square on the normal load ratio. Second, regardless of the points a few road, every road load power must be the same.