Is aluminum wire and cable suitable for medium voltage systems?

I. Is aluminum alloy wire and cable suitable for medium voltage systems?1. Aluminum alloy cables have relatively poor electrical conductivity. The conductivity of aluminum alloy cable is only 61% of copper cable. In the same cable cross-section, the resistance is too large will inevitably lead to line damage is too high, reducing the efficiency of energy use. 2. Aluminum alloy cable load flow is low. The power grid requires cables to quickly switch loads to the opposite line to ensure uninterrupted power supply to users. However, in order to achieve high reliability of the grid and perfect network structure, the equipment and lines are essential. The supply lines in the grid must have a high current-carrying capacity and should be able to carry temporary switching loads in addition to their own loads. The current-carrying capacity of the same section of copper-core cables is more than 30% higher than that of aluminum alloy cables, which can obviously meet the requirements of urban power supply reliability.3. Aluminum alloy cables have low mechanical tensile strength. The tensile strength of aluminum alloy cable is only 46% of that of copper cable, and the allowable traction force is lower than 60% of that of copper cable. A large number of urban distribution networks using cable ring network structure, in the planning and design to minimize the use of cable intermediate joints. In fact, the laying length of single-core copper cables is generally between 600-800m. Considering the same current-carrying capacity, the laying length of a single-core ordinary aluminum cable is only 500 m, and that of a single-core aluminum alloy cable is only 350 m. Obviously, due to the low tensile strength and limited length of a single traction cable, it is necessary to add a large number of intermediate joints, which increases the risk of subsequent operation and maintenance.

-Second, on the U.S. dollars electronic products network platform related to the introduction and sales of products brief: U.S. dollars electronic products network - professional agent / production / sales of a variety of {connectors | wiring harness | wire and cable products }; if you have a related [connectors | wiring harness | wire and cable products] purchasing / sourcing needs or would like to buy / to understand which connectors | wiring harness | wire and cable products we can provide solutions, please contact the following Division Division I business personnel; If you have related [connectors | wire harness | wire and cable products] sales / resources and promotion needs, please click on the "¡¡ Business Cooperation ←" with the person to discuss!