What are the disadvantages of aluminum core transformers?
專欄:Industry information
發布日期:2014-10-13
閱讀量:447
作者:佚名
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The transformer core material generally has copper wire and aluminum wire, and the disadvantages of the aluminum wire transformer are as follows: First, the mechanical properties: coppe..........

       The transformer core material generally has copper wire and aluminum wire, and the disadvantages of the aluminum wire transformer are as follows:

       First, the mechanical properties: copper wire is better, aluminum wire is poor;

       Second, the mechanical strength: aluminum coil is worse than copper coil, aluminum wire is easy to break, the coil is easy to be washed;

       Third, the aluminum wire core transformer has poor short-circuit capability;

       Fourth, thermal stability: aluminum wire is poor, aluminum wire is lower than the maximum allowable temperature of copper wire, aluminum coil is easy to burn;

      V. Impact resistance: The welded joint of the aluminum coil transformer is easily burned under the action of lightning impulse and current, which easily causes overheating;

      6. Aluminum is easily oxidized and is prone to corrosion;

      7. Aluminum coil transformers are mostly made of copper-aluminum wire alloy welding or copper-aluminum joints to connect windings and leads. The mechanical strength of the joint is poor, the welding process is complicated, the joint is easy to disconnect after severe vibration, and the chemical reaction is easy to occur at the long-term running connection. , resulting in an increase in resistivity, resulting in local overheating;

      Eight, production costs: low aluminum wire, high copper wire;

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