<p><img alt="" src="https://edupmquestionhelp.s3.ap-south-1.amazonaws.com/hint/uploads/images/16251301261625130126.jpg" style="height:374px; width:800px" /></p>

<p>&nbsp;</p>

<p>&nbsp;</p>

<p>&nbsp;</p>

<p><span style="font-size:14px">Refer figure 6.12 and table 6.2. Relay R is a standard IDMT overcurrent relay with normal inverse characteristic (setting range: 50-200 % of relay rating in 7 equal steps). Beyond PSM 20, Top is constant.&nbsp; </span></p>

<table cellspacing="0" class="MsoTableGrid" style="border-collapse:collapse; border:none; width:900px">
	<caption>
	<p>&nbsp;</p>

	<p>&nbsp;</p>

	<p><span style="font-size:20px"><strong>Table 6.2</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:89px">
			<div style="text-align:center"><span style="font-size:28px">Sr. No.</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:89px">
			<div style="text-align:center"><span style="font-size:28px">Fault current, I<sub>f</sub> Amp</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:89px">
			<div style="text-align:center"><span style="font-size:28px">C. T. Ratio</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:89px">
			<div style="text-align:center"><span style="font-size:28px">P. S. of Relay R</span></div>

			<div style="text-align:center"><span style="font-size:28px">&nbsp;% of relay rating</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:89px">
			<div style="text-align:center"><span style="font-size:28px">Setting of</span></div>

			<div style="text-align:center"><span style="font-size:28px">&nbsp;H. S. Inst. Unit of relay R, % of relay rating</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:89px">
			<div style="text-align:center"><span style="font-size:28px">TMS set for relay R</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:89px">
			<div style="text-align:center"><span style="font-size:28px">Time of operation of relay R</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1500</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:89px">
			<div style="text-align:center"><span style="font-size:28px">500/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">100</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:89px">
			<div style="text-align:center"><span style="font-size:28px">400</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.8</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:89px">
			<div style="text-align:center"><span style="font-size:28px">A</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:89px">
			<div style="text-align:center"><span style="font-size:28px">2</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:89px">
			<div style="text-align:center"><span style="font-size:28px">450</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:89px">
			<div style="text-align:center"><span style="font-size:28px">100/1</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:89px">
			<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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.2</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:89px">
			<div style="text-align:center"><span style="font-size:28px">B</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:89px">
			<div style="text-align:center"><span style="font-size:28px">3</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:89px">
			<div style="text-align:center"><span style="font-size:28px">900</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:89px">
			<div style="text-align:center"><span style="font-size:28px">100/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">175</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.4</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:89px">
			<div style="text-align:center"><span style="font-size:28px">C</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:89px">
			<div style="text-align:center"><span style="font-size:28px">4</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">100/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">200</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:89px">
			<div style="text-align:center"><span style="font-size:28px">500</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.5</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:89px">
			<div style="text-align:center"><span style="font-size:28px">D</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:89px">
			<div style="text-align:center"><span style="font-size:28px">5</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:89px">
			<div style="text-align:center"><span style="font-size:28px">9500</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">125</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.45</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:89px">
			<div style="text-align:center"><span style="font-size:28px">E</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:89px">
			<div style="text-align:center"><span style="font-size:28px">6</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:89px">
			<div style="text-align:center"><span style="font-size:28px">10000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">150</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:89px">
			<div style="text-align:center"><span style="font-size:28px">600</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.7</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:89px">
			<div style="text-align:center"><span style="font-size:28px">F</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:89px">
			<div style="text-align:center"><span style="font-size:28px">7</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:89px">
			<div style="text-align:center"><span style="font-size:28px">7700</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:89px">
			<div style="text-align:center"><span style="font-size:28px">500/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">75</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:89px">
			<div style="text-align:center"><span style="font-size:28px">2000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">G</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:89px">
			<div style="text-align:center"><span style="font-size:28px">8</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:89px">
			<div style="text-align:center"><span style="font-size:28px">2550</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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">125</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:89px">
			<div style="text-align:center"><span style="font-size:28px">400</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.3</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:89px">
			<div style="text-align:center"><span style="font-size:28px">H</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:89px">
			<div style="text-align:center"><span style="font-size:28px">9</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:89px">
			<div style="text-align:center"><span style="font-size:28px">95</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:89px">
			<div style="text-align:center"><span style="font-size:28px">50/1</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:89px">
			<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:89px">
			<div style="text-align:center"><span style="font-size:28px">1000</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.6</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:89px">
			<div style="text-align:center"><span style="font-size:28px">I</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:89px">
			<div style="text-align:center"><span style="font-size:28px">10</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:89px">
			<div style="text-align:center"><span style="font-size:28px">175</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:89px">
			<div style="text-align:center"><span style="font-size:28px">50/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">75</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:89px">
			<div style="text-align:center"><span style="font-size:28px">500</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.9</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:89px">
			<div style="text-align:center"><span style="font-size:28px">J</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:89px">
			<div style="text-align:center"><span style="font-size:28px">11</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:89px">
			<div style="text-align:center"><span style="font-size:28px">250</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:89px">
			<div style="text-align:center"><span style="font-size:28px">50/1</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:89px">
			<div style="text-align:center"><span style="font-size:28px">150</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:89px">
			<div style="text-align:center"><span style="font-size:28px">400</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:89px">
			<div style="text-align:center"><span style="font-size:28px">0.85</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:89px">
			<div style="text-align:center"><span style="font-size:28px">K</span></div>
			</td>
		</tr>
	</tbody>
</table>