Classification of power cables
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2019-02-27

Classification of power cables

The conductor structure of large-size PVC insulated cables is generally fan-shaped. The rated working temperature of thermoplastic cables: 70 ℃ represents the product model: VV VLV VY VV22 VLV22 VV23 VV32 VV33 VV42 VV43, etc. XLPE insulated cable thermosetting cable rated working temperature: 90 ℃ working temperature and short circuit working temperature are greatly improved: working temperature rises from 70 to 90 ℃ short circuit working temperature (5 seconds) rises from 160 to 250 ℃ for low voltage cables, sector conductors are mainly used, and for medium and high voltage cable conductors, sector conductors are adopted

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The code and meaning of the model part of the bare wire product.
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2013-02-19

The code and meaning of the model part of the bare wire product.

The code and meaning of the model part of the bare wire product.

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The development history of the world wire and cable
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2019-02-27

The development history of the world wire and cable

In 500 BC, Greece discovered friction electricity. In 1200, Italy set off a Renaissance spread across Europe, the rise of modern natural science. In 1752, the American scientist Franklin invented the lightning rod and the wire grounding, from then on, the wire began to apply. In 1826, the German physicist Ohm discovered Ohm's law and determined the conductivity of metals. In 1851, Britain laid a submarine cable across the English Channel. Since then, Europe and the United States have developed in 1879, the United States Edison invented the incandescent electric lamp, made of jute asphalt insulated power cable, laying in New York. In 1927, the United States for the first time.

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Analysis of Power Development and Power Grid Development Center
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2012-03-23

Analysis of Power Development and Power Grid Development Center

The "2012 China Green ICT Industry Technology Development Forum" was held on March 20, 2012 at the New Century JAL Hotel in Beijing. Cui Wenjia, senior engineer of the Planning and Statistics Information Department of the China Electricity Council, introduced the power development situation and the focus of smart grid development. The following is a transcript. Cui Wenjia: Good afternoon, delegates! I am from the China Electricity Council. In the past few years, the China Electricity Council has carried out some research work on some topics related to smart grids. As an industry association, we may pay more attention to the entire smart grid or a broader sense. The smart power system, some of the developments in our country

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Maximum outgoing power of Northwest Power Grid reaches 8.11 million kW
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2012-03-23

Maximum outgoing power of Northwest Power Grid reaches 8.11 million kW

The reporter learned from Northwest Power Grid Co., Ltd. on the 19th that since early March, the power transmission channel from Northwest China to Central China, North China, and East China has realized full-load cross-regional transmission for the first time, with a maximum transmission power of 8.11 million kilowatts, which can greatly alleviate the power shortage in Central China, North China, and East China power grids. According to the introduction of Northwest Power Grid Co., Ltd., starting from early March, the three 8.11 million-kilowatt power transmission channels of the Northwest Power Grid from Baoji in Shaanxi to Deyang in Sichuan, from Shaanxi to Lingbao in Henan, and from Ningdong to Shandong have begun to transmit power at full load across regions. These power will be used to ease the power shortage in Central China, North China, and East China power grids. According to statistics, cut

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China Southern Power Grid has a power gap of 13 million kilowatts.
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2012-03-23

China Southern Power Grid has a power gap of 13 million kilowatts.

The National Development and Reform Commission stated on March 20 that in February this year, the country's maximum power limit load was 5.66 million kilowatts, a decrease of 870000 kilowatts month-on-month; the cumulative power limit was 1.29 billion kilowatt-hours, an increase of 0.64 billion kilowatt-hours. The power rationing provinces in that month were mainly concentrated in the five provinces (regions) of Guangdong, Guangxi, Guizhou, Yunnan, and Hainan under the jurisdiction of China Southern Power Grid. The maximum power rationing loads were 286, 169, 161, 92, and 180000 kilowatts respectively. Among them, Guangdong, Guangxi, Guizhou, and Yunnan are mainly affected by the drying up of incoming water, and the reduction of hydropower generation affects the implementation of the west-to-east power transmission plan; Hainan suffered a short-term and small amount of power rationing in late February due to unit failure.

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