已知如图所示三相电路中的三相电源对称,Z1=Z1∠φ1,Z2=Z2∠φ2,Z3=Z3∠φ3,若UNN=0,则Z1=Z2=Z3且( )。
发布时间:2024-12-08
A.φ1=φ2=φ3
B.φ1-φ2=φ2-φ3=φ3-φ1=120°
C.φ1-φ2=φ2-φ3=φ3-φ1=-120°
D.N必须接地
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