On January 5, 2009, during the fire safety inspection, the Jiangnan Fire Brigade found that the warehouse in the Nanning City Fufulong International Lighting City in Wuyi Middle Road, Jiangnan District was put into use without the approval of the public security fire department. The fire brigade of the brigade issued and delivered the Notice of Correction of Time Limits on the same day, ordering the lighting city to correct its fire-fighting behavior before February 6, 2009. During the rectification period, the fire inspector took the initiative to come to the door for service and repeatedly proposed rectification measures to him, but Liu, the person in charge of the lighting city, ignored it. On February 9, 2009, when the fire brigade of the Jiangnan Brigade reviewed the lighting city, it found that it had not corrected the illegal behavior within the time limit and continued to put into use, ignoring the “Revision of the deadline for rectification†issued by the fire department.
In order to establish the authority of the fire protection law and severely punish illegal acts, the brigade will investigate and collect evidence for the lighting city in accordance with legal procedures. On February 16, the Jiangnan Brigade granted the Nanning Jufulong International Lighting City a ban on the use of the Fire Protection Law of the People's Republic of China and the Fire Protection Regulations of the Guangxi Zhuang Autonomous Region, and imposed a fine of RMB 10,000. , the punishment for the warning of Liu, the main person in charge of the lighting city.
On the same day, after receiving the punishment decision from the fire department, Liu, the principal person in charge of the lighting city, regretted and finally realized the serious consequences caused by the illegal act, and said that he would complete the relevant procedures as soon as possible to ensure fire safety.

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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