Daily article on electrical knowledge

Basic knowledge of electricians_ Common knowledge for electricians: In the three-phase five wire system, colors yellow, green, red, and light blue respectively represent U, V, W, and N protective grounding wires. In operation, the current of each phase of the transformer should not exceed the rated current; The maximum unbalanced current shall not exceed 25% of the rated current. After the transformer is put into operation, regular maintenance should be carried out. In a system powered by the same transformer, it is not advisable to mix protective grounding and protective neutral connection. The rated voltage of the secondary coil of the voltage transformer is 100V. The secondary side of the voltage transformer shall not be short circuited during operation. The basic knowledge of voltage transformer electricians is that a large short-circuit current will be generated during a short circuit, which may burn out the transformer_ Common knowledge of electricians: The colors used for three-phase five wire system are yellow, green, red, and light blue, respectively representing the dual colors of U, V, W, and N protective grounding wires (PE)
During operation, the current of each phase of the transformer should not exceed the rated current; The maximum unbalanced current shall not exceed 25% of the rated current. After the transformer is put into operation, regular maintenance should be carried out.
In a system powered by the same transformer, it is not advisable to mix protective grounding and protective neutral connection.
The rated voltage of the secondary coil of the voltage transformer is 100V.