Today, in functional lighting, outdoor lighting is strongly driven by policy, but some companies still set their product lines in indoor and market-wide lighting. As a lighting giant, Philips is more optimistic about the development of indoor and outdoor products? What is the road map for its future development?
“Whether outdoor and indoor lighting will be given priority, it is mainly determined by the characteristics of the product. Overall, because the cost of indoor lighting is relatively low, we think it will be applied faster, the technical requirements for outdoor lighting are higher, and the cost is also high. Higher, if a group buys will also promote its development." Lin Liangqi, president of Philips Lighting Greater China, told a reporter for Semiconductor Lighting magazine.
It is understood that Philips has launched its main products in both indoor and outdoor areas of semiconductor lighting. According to Lin Liangqi, in the production and manufacture of outdoor lighting products, they will focus on three factors: product safety, maintainability and energy saving. In terms of outdoor lighting, Philips has introduced Clear Line, a product that replaces traditional street lights. Lin Liangqi said that Philips will pay more attention to the office lighting with high illumination and high energy requirements and high market. LuxSense products are one of the representatives.
Nevertheless, Lin Qi to really believe that large-scale application of LED, we must address three aspects of time, cost, size and so on. “Whether it is cost, quality or industrial investment, only the entire industry can form economies of scale, and the industry can develop rapidly.â€
Power cables are cables used to transmit and distribute electrical energy. Power cables are commonly used in urban underground power grids, power station outlet lines, internal power supply for industrial and mining enterprises, and power lines under river water.
In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the backbone of power systems, including various voltage levels from 1-500KV and above, and various insulated power cables.
The use of power cables has been around for more than a hundred years. In 1879, the American inventor T.A. Edison wrapped jute around a copper rod and put it into the iron pipe, and then filled the asphalt mixture to make a cable. He laid the cable in New York and created underground power transmission. The following year, the British Karende invented the asphalt impregnated paper insulated Power Cable. In 1889, the British S.Z. Ferranti laid a 10 kV oil-impregnated paper insulated cable between London and Dartford. In 1908, the UK built a 20 kV cable network. Power cables are becoming more widely used. In 1911, Germany laid a 60 kV high-voltage cable and began the development of high-voltage cables. In 1913, the German M. Hoichstedt developed a phase Shielded Cable, which improved the electric field distribution inside the cable and eliminated the tangential stress of the insulating surface, which became a milestone in the development of power cables. In 1952, Sweden laid a 380 kV ultra-High Voltage Cable in the northern power plant to realize the application of ultra-high voltage cable. By the 1980s, 1100 kV and 1200 kV UHV power cables were made.
basic structure
The basic structure of the power cable consists of a core (conductor), an insulating layer, a shielding layer and a protective layer.
Folding core
The core is the conductive part of the power cable that is used to carry electrical energy and is the main part of the power cable.
Folding insulation
The insulating layer electrically isolates the core from the earth and the cores of different phases to ensure electrical energy transmission, and is an indispensable component of the power cable structure.
Folding shield
Power cables of 15KV and above generally have a conductor shield and an insulating shield.
Folding protective layer
The role of the protective layer is to protect the power cable from external impurities and moisture, and to prevent external forces from directly damaging the power cable.
Power Cable
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