先将二次侧电阻与漏抗折算到一次测:
R2'=R2(U1N/U2N)^2=0.006(6/0.23)^2=4.08Ω
X2'=X2(U1N/U2N)^2=0.013(6/0.23)^2=8.85Ω
总短路阻抗:Z0=[(R1+R2')^2+(X1+X2')^2]^0.5=19.6Ω
短路电流:Is=U1N/Z0=6/19.6=0.306(kA)=306(A)
所以答案应当是C.
先将二次侧电阻与漏抗折算到一次测:
R2'=R2(U1N/U2N)^2=0.006(6/0.23)^2=4.08Ω
X2'=X2(U1N/U2N)^2=0.013(6/0.23)^2=8.85Ω
总短路阻抗:Z0=[(R1+R2')^2+(X1+X2')^2]^0.5=19.6Ω
短路电流:Is=U1N/Z0=6/19.6=0.306(kA)=306(A)
所以答案应当是C.