<p style="text-align:justify"><img alt="" src="https://edupmquestionhelp.s3.ap-south-1.amazonaws.com/hint/uploads/images/16256598011625659801.jpg" style="height:419px; width:800px" /></p>

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<p style="text-align:justify"><span style="font-size:14px">Figure 7.40 shows a single line diagram of a portion of power system network. Relays R<sub>1</sub> to R<sub>4</sub> are normal inverse IDMT overcurrent relays. The maximum power taken by transmission lines is as follows:</span></p>

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<table cellspacing="0" class="MsoTableGrid" style="border-collapse:collapse; border:none; margin-left:160px; width:900px">
	<caption>
	<p><span style="font-size:18px"><strong>Table 7.17: Power Flowing in Lines</strong></span></p>
	</caption>
	<tbody>
		<tr>
			<td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:72px">
			<div style="text-align:center"><span style="font-size:28px">Line</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:136px">
			<div style="text-align:center"><span style="font-size:28px">Power in MW</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:123px">
			<div style="text-align:center"><span style="font-size:28px">Power Factor</span></div>
			</td>
		</tr>
		<tr>
			<td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:72px">
			<div style="text-align:center"><span style="font-size:28px">AB</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:136px">
			<div style="text-align:center"><span style="font-size:28px">50</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:123px">
			<div style="text-align:center"><span style="font-size:28px">0.8</span></div>
			</td>
		</tr>
		<tr>
			<td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:72px">
			<div style="text-align:center"><span style="font-size:28px">CD</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:136px">
			<div style="text-align:center"><span style="font-size:28px">20</span></div>
			</td>
			<td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:123px">
			<div style="text-align:center"><span style="font-size:28px">0.8</span></div>
			</td>
		</tr>
	</tbody>
</table>

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

<p style="margin-left:48px; text-align:justify"><span style="font-size:14px"><strong>The bracketed figures indicate the fault level in MVA at respective bus. Allow 10 % overload while deciding plug-setting of all relays. TMS of R<sub>4</sub> is set at 0.1. P. S. of phase relay R<sub>4</sub> shall be set at</strong></span></p>

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