<p style="text-align:justify"><span style="font-size:11pt">The maximum percentage of line protected by an instantaneous overcurrent relay for&nbsp;an L-L fault is</span></p>

<p style="text-align:justify">&nbsp;</p>

<p style="margin-left:48px; text-align:justify"><span style="font-size:11pt">Assume that </span></p>

<p style="margin-left:48px; text-align:justify">&nbsp;</p>

<ul>
	<li style="text-align:justify"><span style="font-size:11pt">transient overreach of the relay is 10 %.</span></li>
	<li style="text-align:justify"><span style="font-size:11pt">Z<sub>s</sub>/Z<sub>l</sub> ratio to be unity.</span></li>
	<li style="text-align:justify"><span style="font-size:11pt">Z<sub>1</sub> = Z<sub>2</sub>, for all equipment of the power system.</span></li>
	<li style="text-align:justify"><span style="font-size:11pt">Z<sub>f</sub> = 0</span></li>
</ul>

<p style="margin-left:96px; text-align:justify">&nbsp;</p>