[单选题]使用正序增广定则计算短路电流时,当发生两相经过度阻抗Zn短路,其附加阻抗为( ).(每题0.5 分)(0.5)
发布时间:2025-12-01
A.0
B.Z₂ +Z₀+3Zn
C.Z₂+Zn
D.Z₂+3Zn
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