The positive , negative and zero sequence impedance of 3−ϕ generator are 0.4 pu, 0.3 pu and 0.2 pu respectively. For a line to line fault with fault impedance Zf and fault current is If1=0.2If, where If is the fault current with zero fault impedance, then value of Zf will be ___ pu.2.8

The positive , negative and zero sequence impedance of 3−ϕ generato

1.	The positive , negative and zero sequence impedance of 3−ϕ generator are 0.4 pu, 0.3 pu and 0.2 pu respectively. For a line to line fault with fault impedance Zf and fault current is If1=0.2If, where If is the fault current with zero fault impedance, then value of Zf will be ___ pu.2.8
Answer» The positive , negative and zero sequence impedance of $3 - ϕ$ generator are 0.4 pu, 0.3 pu and 0.2 pu respectively. For a line to line fault with fault impedance $Z_{f}$ and fault current is $I_{f 1} = 0.2 I_{f}$ , where $I_{f}$ is the fault current with zero fault impedance, then value of $Z_{f}$ will be ___ pu. 2.8

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The positive , negative and zero sequence impedance of 3−ϕ generator are 0.4 pu, 0.3 pu and 0.2 pu respectively. For a line to line fault with fault impedance Zf and fault current is If1=0.2If, where If is the fault current with zero fault impedance, then value of Zf will be ___ pu.2.8

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