As the name suggests, the wire grounding line is actually a line that connects with the earth. It can also be called a safety circuit line when it is said. When there is an emergency danger, the existing high voltage is directly converted to the earth. It can be said to be a safety line. Regarding the specification of the grounding wire of the electric wire, the national electric power industry has strict requirements. In order to avoid the accidental high-voltage danger in the equipment and the line of the power outage, the wire grounding wire specification shoul...
发布时间:
2019
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04
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16
Browse times：25
The cable adopts chlorinated polyethylene process mainly for mixing, extrusion and vulcanization. The cable is made of chlorinated polyethylene.I. Mixing process 1. The chlorinated polyethylene element does not contain double bonds in the main chain, and the process of mechanical plastics is difficult to cut, and it does not affect the viscosity of Mooney, so no mastication is required.2. CPE glue can be mixed by an open mill, and it is also suitable for mixing with an internal mixer. Before mixing with an open mill, it is first necessary to confirm that the CPE is in t...
发布时间:
2019
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04
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16
Browse times：56
Flame-retardant wire means that the experimental circuit is in a burning state in a specified environmental environment. When the fire source is extinguished, the spread of the fire will be limited to the specified range, and the residual flame on the cable can be extinguished by itself within the specified time. The characteristic of the flame-retardant cable is that the cable in the fire environment will stop running due to being burned out, and it will also prevent the fire from spreading, and control the combustion range to a local extent to ensure the safety of other equipment and avoid f...
发布时间:
2019
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04
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16
Browse times：20
The most essential difference between the original copper wire and the copper-clad copper wire is the difference in the properties of the conductor material. The original copper is also called oxygen-free copper wire. It is a new copper material modified by technology. It is basically free of impurities, low in oxygen content and high in purity. It is also an ideal wire conductor material in integrated wiring. . The wire made of oxygen-free copper has low resistance, high conductivity and long transmission distance.The difference between original copper and copper-clad copper wire &...
发布时间:
2019
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04
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16
Browse times：139
Ultra-high voltage transmission refers to the use of 500 kV - 1000 kV voltage level to deliver electrical energy. If the 220 kV transmission index is 100%, the relative investment per kilometer of EHV transmission, the relative cost per 100 kWh of electricity transmission per kWh, and the consumption of metal materials are greatly reduced, and the utilization rate of the corridor is obvious. improve. In daily life, we can often see overhead EHV transmission projects. Have you ever thought about such a question: Why can't the high-voltage wires be buried underground ...
发布时间:
2019
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04
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22
Browse times：19
In 2019, the development of China's photovoltaic industry has come to a critical adjustment period. Not only the development of the whole industry tends to be orderly from “barbaric growth”, but also the entire industry chain needs to complete the all-round transformation of quality, technology and efficiency. At present, in recent years, China's photovoltaic industry has made great progress in technology, technology, efficiency and other aspects, and policy has also begun to focus on reducing the non-technical costs of the industry. It is reasonable to say that the development of the ...
发布时间:
2019
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04
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22
Browse times：26