According to Nikkei News, in July of this year, the sales of LED bulbs in Japan accounted for 19.7% of the total bulbs. It is estimated that it will exceed 20% for the first time in August. In this regard, the general manager of Crystal Power said that after the LCD TV, LED first The demand for 3-wave lighting is coming soon, but it still needs government policy subsidies and support for price declines to reach a higher penetration rate. The light treasure chief executive Teng Guangzhong analysis, the current LED lighting also test water temperature stage, is expected to further become a general lighting products in 2012.
According to relevant reports, in July, the sales volume of LED bulbs in Japan accounted for 19.7% of the total bulbs, and it is estimated that it will exceed 20% for the first time in August. According to Zhou Junming, the Japanese government mainly supports the green energy industry and launches a considerable amount of subsidies. The policy, coupled with the high price of electricity in Japan and the rising awareness of environmental protection, continue to grow the LED bulb market in Japan.
He stressed that if the cost and selling price drop faster, the LED lighting market will be expected to expand, so in the short term it will depend on policy subsidies to create demand for the LED lighting market.
The high-efficiency high-voltage (HV) LED that Jingdian produced in the second quarter of this year has successfully entered the world's three major lighting plants and IKEA supply chain. It is estimated that the proportion of LED lighting revenue next year is expected to increase from 20% this year. More than 30%.
In addition, Guangbaoke actively deploys LED lighting, and produces its own LED components and modules. The street lighting related lighting business is under the responsibility of its subsidiary Guanglin. Teng Guangzhong stated that this year, the group’s LED business revenue is approximately RMB 18.5 billion, which is optimistic for 2013. Will come to 50 billion yuan.
Guang Baoke's current LED light bulb module has entered the supply chain of Japanese brand manufacturers. As the ratio of LED bulbs in Japan has been repeatedly raised, it is optimistic that Guang Baoke will have a chance to occupy a place in the Japanese market.
Delta Jiang Wenxing said that compared to Philips, the world-known lighting company, Taiwan lacks the packaging and positioning of products, and if LED lighting products can successfully develop brands, profitability for enterprises is also expected to increase.
He added that with the development of new applications of LEDs in medical care, humanization, and plant lighting, it is expected that the future of LED lighting will be "Lighting guides human life."
For circuits operating at or above 2,000 volts between conductors, a conductive shield may surround each insulated conductor. This equalizes electrical stress on the cable insulation. This technique was patented by Martin Hochstadter in 1916; the shield is sometimes called a Hochstadter shield. The individual conductor shields of a cable are connected to earth ground at the ends of the cable, and at locations along the length if voltage rise during faults would be dangerous.
Cables for power distribution of 10 kV or higher may be insulated with oil and paper, and are run in a rigid steel pipe, semi-rigid aluminum or lead sheath. For higher voltages the oil may be kept under pressure to prevent formation of voids that would allow partial discharges within the cable insulation.
A high-voltage cable designed for 400 kV. The large conductor in the center carries the current, smaller conductors on the outside act as a shield to equalize the voltage stress in the thick polyethylene insulation layer.Modern high-voltage cables use polyethylene or other polymers, including XLPE for insulation. They require special techniques for jointing and terminating, see High-voltage cable.
Many multiconductor cables have a bare or insulated grounding or bonding wire which is for connection to earth ground. The grounding conductor connects equipment enclosures to ground for protection from electric shock.
Electrical power cables are often installed in raceways, including electrical conduit and cable trays, which may contain one or more conductors.
A hybrid cable can include conductors for control signals or may also include optical fibers for data.
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