With the rapid development of solid-state lighting technology, the efficiency of phosphor conversion white light has begun to surpass that of traditional lighting technology. The improvement of efficiency mainly comes from the improvement of the internal quantum efficiency of epitaxial and the improvement of the external quantum efficiency of chip design. In addition, LED It also offers smaller source sizes and longer life.
At present, the result of high-power LED laboratory has reached 150lm/W, and the luminous flux of single chip has been continuously improved, especially at high current density. How to achieve 1mm × 1mm single-chip LED total luminous flux reaches 1000lm, the efficiency reaches 150lm / W, the core of development lies in extraction efficiency, internal quantum efficiency, turn-on voltage, external quantum efficiency, power conversion efficiency, phosphor conversion efficiency, light efficiency and Luminous flux. The key technology improvements are the increase in internal quantum efficiency and the improvement in phosphor conversion efficiency, especially for warm white light.
There are three main driving forces for solid-state lighting development. One is to promote SSL applications through legislation; the second is to increase social environmental awareness and concepts; and the third is to create high-performance products that meet consumer needs.
Significant cost reductions will accelerate the large-scale application of LEDs in lighting, and we must reduce LED costs by retrofitting package designs, increasing yields, and optimizing production processes. At the same time, we need to improve LED efficacy and enhance system reliability. Because not all LEDs use the same design, one manufacturer's data cannot be applied to all LEDs, and we must enhance the reliability design of the entire system. The reliability of the system does not only refer to the LED device itself, but also includes related components such as photoelectric heat. The reliability of LED luminaires is a function of drive current and LED temperature. The effect of a single LED failure on system reliability is how the LEDs are connected together. There are other reasons besides LEDs that can cause system failures, including solder joints, circuit drives, and aging of external lenses. In addition, LED performance should be evaluated based on specific operating temperatures and currents, and then combined with reliability data to provide different LEDs to the most appropriate application.
The continuous improvement of the performance of LED devices has made it applicable to the field of lighting. The overall cost is a key indicator affecting the acceptance of the LED market. It can reduce the complexity of user use by improving color control and grading. The use of suitable LED products can guarantee such as Successful implementation of municipal lighting projects such as “Ten Cities and Ten Thousand Citiesâ€. (The special correspondent Zhao Yanbing of this journal has been compiled according to the speech of the conference and has not been reviewed by me)
XLPE insulated electrical Power Cable consists of below major components: one or more high quality stranded copper or aluminum conducts, XLPE insulation, fixed tape and filler, optional protective armour, overall PVC sheath.
These cables are with simple structure, light weight and high heat resistance. With the development of our technology, our factory is able to manufacturing our products more lighter, durable and flexible for international requirements.
It could be classified into 3 type as below:
Non-armoured XLPE Power Cable(Cu or Al /XLPE/PVC)
Steel Tape Armoured Power Cable(Cu or Al/XLPE/STA/PVC)
Steel Wire Armoured Power Cable(Cu or Al/XLPE/STA/PVC)
Manufacture Standard
This cable is manufactured according to the standard of GB12706-2008(The Same as IEC60502).It can also be manufactured according to IEC,BS,UL as request.
Using features
l Max. permissible continuous operating temperature of conductor is 90℃.
l Max. temperature of conductor during short circuit (5s maximum duration ) shall not exceed 250℃.
l The ambient temperature under installation should not below 0℃.
l The bending radius of a single-core cable: not less than 20
times of cable`s OD
The bending radius of a three-core cable: not less
than 15 times of cable`s OD
Why choose XLPE Insulated Power Cable?
l Heat resistant performance-With XLPE special structure, it will not be decomposed and carbonized up to 300℃ with at most 40 years life time.
l Insulating Performance-Same insulation characteristic as PE, higher electrical resistance and less impact by temperature.
l Mechanical Performance-Higher hardness, stiffness, abrasion resistance and shock resistance.
l Chemical performance-XLPE has higher resistance to acid and alkaline. It only produce water and carbon dioxide, it shows more environmental friendly which could satisfy modern requirements of fire safety.
Application:
This product is suitable for transmission and distribution of electrical power with AC rated voltage 0.6/1Kv,1.8/3 kV,3.6/6 kV,6/10 kV,8.7/10 kV,8.7/15 kV,12/20 kV,26/35kV kV. Such as power distributing systems, industrial plant and others.
You are always welcome to contact us if you have any questions about XLPE electrical power cables. We will offer you professional solutions as you required with attractive price.
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Fujian Lien Technology Co.,Ltd , http://www.liencable.com