一个三相变压器为三角形连接,空载时,每相等值阻抗Z=j100Ω,额定相电压为380V,经过端线复阻抗Zj=1+j2Ω的三相输电线与电源连接,如要求变压器在空载时的端电压为额定值,则电源的线电压应为( )。
发布时间:2024-12-08
A.421V
B.404V
C.398V
D.390V
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