3 phase electric motor connections

Three phase asynchronous motor three-phase winding has six connection heads, and it is connected to the six wiring of the junction box, and the symbols are D1, D2, D3, D4, D5 and D6. D1 and D4, D2 and D5, D3 and D5 are all phases, called "three phase" winding.

There are two kinds of connection methods of three-phase asynchronous motor, a delta connection, represented by the symbol "△"; the other is a star, represented by the symbol "Y". The so-called triangle connection is the six terminals of the junction box, the upper and lower two columns are connected with the metal sheet, and then the power is connected separately. The so-called star connection is to connect the three terminals with a metal sheet, and the following three posts are then connected to the power.


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