An overcurrent relay set to operate at (10 mathrm{~A}) is connected to the (mathrm{CT}) in Figure 10.8

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An overcurrent relay set to operate at \(10 \mathrm{~A}\) is connected to the \(\mathrm{CT}\) in Figure 10.8 with a 500:5 CT ratio. Determine the minimum primary fault current that the relay will detect if the burden \(\mathrm{Z}_{\mathrm{B}}\) is

(a) \(1.0 \Omega\),

(b) \(4.0 \Omega\), and

(c) \(5.0 \Omega\).

Figure 10.8

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Power System Analysis And Design

ISBN: 9781305632134

6th Edition

Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

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