With the clarification of the manufacturer's strategy, LED color TV has attracted widespread attention in the industry. Looking at the recent LED market, the leading industry is still the foreign-funded color TV Samsung, Sony, Sharp three giants, and the local representative of the LED color TV has already launched Hisense in the domestic color TV is also the first camp.
According to the reporter's understanding, domestic color TV camps are also engaged in LED-related research and development, but have not decisively entered the field of LED color TV. For example, Konka recently developed a 350 square meter, nearly 9-story LED display large screen, settled in Chengdu. The Beijing News reporter learned that some domestic manufacturers have already launched a plan for LED color TV. Recently, TCL multimedia related technical personnel revealed that the company's LED products have been developed in place, and new products will be launched soon.
However, other manufacturers have a clear wait-and-see attitude. A color TV industry insider told reporters that for LED color TV, even if it is now research and development, it will not be particularly large. The company must be based on consumer demand for research and development, but the current price of LED products is too high, and ordinary consumers can afford very few. When the LED color TV trend is more obvious, the company will consider launching.
When the domestic color TV manufacturers waited, the foreign giants have already defined their own LED color TV strategic plan. At the new product launch conference on April 10, Samsung Electronics Greater China Marketing President Jin Rongxia made it clear that Samsung Electronics’ goal this year is that LED TVs account for 10% of TV sales.
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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.
12kv Power Cable, 20kv Power Cable
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