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1 某三相100kVA之變壓器,其電阻標么值為0.005pu,電抗標么值為0.012pu,若以1000kVA為基準時,其阻抗標么值為何?
A 0.013pu
B 0.017pu
C 0.13pu
D 0.17pu

Zpu = Rpu2+Xpu2

= 0.0052+0.0122 = 0.013

Zpu′ = Zpu × S′S

= 0.013 × 1000100 = 0.13pu