electrical engineering

HIGH VOLTAGE CIRCUIT BREAKER

<div style="text-align: justify;">SUB - OBJECTIVE<br />
<br />
At the end of the lesson the Trainee will be able to analyze the high voltage circuit breakers faults find it out and fix it.</div><br />
<div style="text-align: center;"><span style="background-color: yellow; color: red; font-size: medium;">CIRCUIT BREAKER</span></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"></div><div align="center"><table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: 1.5pt;"><tbody>
<tr style="height: 34.3pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid solid double; border-width: 4.5pt 1pt 3pt 4.5pt; height: 34.3pt; padding: 0cm; width: 30.05pt;" width="40"><h4>No</h4></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 34.3pt; padding: 0cm; width: 78.7pt;" width="105"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Symptoms</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 34.3pt; padding: 0cm; width: 125.75pt;" width="168"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Cause</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double solid none; border-width: 4.5pt 4.5pt 3pt medium; height: 34.3pt; padding: 0cm; width: 193.75pt;" width="258"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Remedy</span></b></div></td>  </tr>
<tr style="height: 33.3pt; page-break-inside: avoid;">   <td rowspan="2" style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 33.3pt; padding: 0cm; width: 30.05pt;" width="40"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">1.</span></b></div></td>   <td rowspan="2" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 33.3pt; padding: 0cm; width: 78.7pt;" width="105"><div class="MsoNormal" style="direction: ltr; margin-left: 8.7pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Overheat of</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 11.35pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Contact.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 33.3pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 0.45pt; text-align: left; text-indent: 5.85pt; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> <b>(I)</b> Poor contact.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 33.3pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Replace wiper spring.</span></div></td>  </tr>
<tr style="height: 48.65pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 48.65pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 7.5pt; text-align: left; text-indent: 1.5pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(2)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Ingress of foreign substances to contact</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -18pt; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">surface or   rough main contact.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 48.65pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 26.2pt; text-align: left; text-indent: -18.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(a)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Remove foreign substances.</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 26.2pt; text-align: left; text-indent: -18.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(b)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Polish contact surface (replace, if remarkably roughened).</span></div></td>  </tr>
<tr style="height: 31.7pt; page-break-inside: avoid;">   <td rowspan="7" style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 31.7pt; padding: 0cm; width: 30.05pt;" width="40"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">    2.</span></b></div></td>   <td rowspan="7" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 31.7pt; padding: 0cm; width: 78.7pt;" width="105"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Failure in inter- Rupting      operation.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 31.7pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -16.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(1)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Broken wire or erroneous wiring of opening circuit.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 31.7pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Recheck circuit</span></div></td>  </tr>
<tr style="height: 147.05pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 147.05pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -16.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(2)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Poor contact of auxiliary switch.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 147.05pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(a)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> If auxiliary switch lever of    </span></div><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">     ON/OFF</span></b></div><div class="MsoNormal" style="direction: ltr; margin-left: 31.9pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">shifting operation is found   improper,</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 31.9pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">adjusting shifting.</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(b)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> If auxiliary switch contact wipe is</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 31.9pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">poor, increase wipe or   replace auxiliary switch.</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 27pt; text-align: left; text-indent: -19.2pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(c)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Should incomplete contact of auxiliary.</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 30pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">switch be caused by looseness   of mounting bolts, retighten</span></div><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">          them.</span></div></td>  </tr>
<tr style="height: 31.5pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 31.5pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -18pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(3)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Broken wire of layer short of tripping coil.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 31.5pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Replace coil.</span></div></td>  </tr>
<tr style="height: 33.05pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 33.05pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -16.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(4)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Breakage of link, on control system.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 33.05pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Replace broken parts.</span></div></td>  </tr>
<tr style="height: 38.95pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 38.95pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -16.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(5)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Malfunction fo electromagnetic valve.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 38.95pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Repair increased friction   parts and defective parts or replace electro – magnetic valve. </span></div></td>  </tr>
<tr style="height: 38.95pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 38.95pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 24.3pt; text-align: left; text-indent: -16.4pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(6)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Operating air pressure drop.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 38.95pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 25.8pt; text-align: left; text-indent: -18pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(a)<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">   </span></span></b><span dir="LTR"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Check setting pressure of reducing valve. </span></span></div><div class="MsoNormal" style="direction: ltr; margin-left: 25.8pt; text-align: left; text-indent: -18pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(b)<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">   </span></span></b><span dir="LTR"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Check air supply source and air leak. </span></span></div></td>  </tr>
<tr style="height: 38.95pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 38.95pt; padding: 0cm; width: 125.75pt;" width="168"><div class="MsoNormal" style="direction: ltr; margin-left: 7.9pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">(7)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;"> Gas pressure drop.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 38.95pt; padding: 0cm; width: 193.75pt;" width="258"><div class="MsoNormal" style="direction: ltr; margin-left: 7.8pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.2pt;">Repair leak places and supply   gas.</span></div></td>  </tr>
</tbody></table></div><br />
<div style="text-align: center;"><br />
</div><div style="text-align: center;"></div><div style="text-align: center;"></div><table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: auto; margin-right: auto; text-align: left;"><tbody>
<tr style="height: 27.95pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid solid double; border-width: 4.5pt 1pt 3pt 4.5pt; height: 27.95pt; padding: 0cm; width: 25.75pt;" width="34"><h4>No</h4></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 27.95pt; padding: 0cm; width: 66.5pt;" width="89"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Symptoms</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 27.95pt; padding: 0cm; width: 197.25pt;" width="263"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Cause</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double solid none; border-width: 4.5pt 4.5pt 3pt medium; height: 27.95pt; padding: 0cm; width: 144.75pt;" width="193"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Remedy</span></b></div></td>  </tr>
<tr style="height: 41.4pt; page-break-inside: avoid;">   <td rowspan="6" style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 41.4pt; padding: 0cm; width: 25.75pt;" width="34"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">3.</span></b></div></td>   <td rowspan="6" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 41.4pt; padding: 0cm; width: 66.5pt;" width="89"><div class="MsoNormal" style="direction: ltr; margin-left: 8.4pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Failure of closing</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 8.4pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">operation</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 41.4pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 30pt; text-align: left; text-indent: -26.45pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(1)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">    Broken wire or erroneous wiring   of closing control circuit.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 41.4pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Recheck circuit</span></div></td>  </tr>
<tr style="height: 39pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 39pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 8.5pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(2)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">   Poor contact of Trip free  </span></div><div class="MsoNormal" style="direction: ltr; margin-left: 8.5pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">       </span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Contactor.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 39pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Replace contactor or repair rough contactsurface.</span></div></td>  </tr>
<tr style="height: 29.4pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 29.4pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 34.95pt; text-align: left; text-indent: -26.45pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(3)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">   Broken wire or layer short   of  coil.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 29.4pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Replace coil.</span></div></td>  </tr>
<tr style="height: 42.6pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 42.6pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 8.5pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(4)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">   Malfunction of hook.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 42.6pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Eliminate increased friction and replace defective parts.</span></div></td>  </tr>
<tr style="height: 21.3pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 21.3pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 8.5pt; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(5)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">   Breakage of closing spring.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 21.3pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Replace spring</span></div></td>  </tr>
<tr style="height: 33.3pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 33.3pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">  (6)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">   Gas pressure drop.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 33.3pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Supply gas and repair leak places.</span></div></td>  </tr>
<tr style="height: 92.1pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 92.1pt; padding: 0cm; width: 25.75pt;" width="34"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 2.2pt;">4.</span></b></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 92.1pt; padding: 0cm; width: 66.5pt;" width="89"><div class="MsoNormal" style="direction: ltr; margin-left: 12.2pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Pumping operation</span></div><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 92.1pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 25.95pt; text-align: left; text-indent: -19.95pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(1)<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">  </span></span></b><span dir="LTR"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Erroneous operation of.trip free contactor or   poor contact of auxiliary switch (for trip free contactor).</span></span></div><div class="MsoNormal" style="direction: ltr; margin-left: 24pt; text-align: left; text-indent: -18pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(2)<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> </span></span></b><span dir="LTR"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Defective arrangement of hook and roller on   closing link mechanism.</span></span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 92.1pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Check trip free contactor.</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Check and repair link mechanism.</span></div></td>  </tr>
<tr style="height: 34.15pt; page-break-inside: avoid;">   <td rowspan="5" style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1.1pt 4.5pt 4.5pt; height: 34.15pt; padding: 0cm; width: 25.75pt;" width="34"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">5.</span></b></div></td>   <td rowspan="5" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1.1pt 4.5pt medium; height: 34.15pt; padding: 0cm; width: 66.5pt;" width="89"><div class="MsoNormal" style="direction: ltr; margin-left: 4.3pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Gas leakage</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 34.15pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 24pt; text-align: left; text-indent: -23.8pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (1)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Incomplete   insertion of packing into groove or hole on seal, or damaged gasket.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 34.15pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Reweld seal part gasket.</span></div></td>  </tr>
<tr style="height: 41.95pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 41.95pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (2)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">  Defective welding or   defective              </span></div><div class="MsoNormal" style="direction: ltr; margin-left: 24pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">material.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 41.95pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Reweld or replace parts.</span></div></td>  </tr>
<tr style="height: 45.35pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 45.35pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> <b>(3)</b>  Loose joints.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 45.35pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Check fastenings.</span></div></td>  </tr>
<tr style="height: 50.45pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 50.45pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin: 0cm 5.25pt 0.0001pt 25.95pt; text-align: left; text-indent: -25.95pt; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> <b>(4)</b>  Mulfunction of gas density detector.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 50.45pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Readjust or replace gas density detector.</span></div></td>  </tr>
<tr style="height: 179.7pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1.1pt 4.5pt medium; height: 179.7pt; padding: 0cm; width: 197.25pt;" width="263"><div class="MsoNormal" style="direction: ltr; margin-left: 25.95pt; text-align: left; text-indent: -25.95pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (5)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> When gas   density detector issues heavy fault alarm due   to broken gas piping etc.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 179.7pt; padding: 0cm; width: 144.75pt;" width="193"><div class="MsoBodyText" style="margin: 0cm 10.7pt 0.0001pt 18.75pt;"><span style="letter-spacing: 0.4pt;">Turn off the backup circuit breaker immediately, and also turn off the disconnecting switch from both ends of circuit breaker to be separate from the circuit.<span dir="RTL" lang="AR-SA"></span></span></div><div class="MsoNormal" style="direction: ltr; margin-left: 18.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">contact with the nearest sale office of Hitachi Ltd. or Kokubu Works   directly</span></div></td>  </tr>
</tbody> </table><div style="text-align: center;"></div><div style="text-align: center;"></div><div style="text-align: center;"></div><div style="text-align: center;">  </div><div></div><table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: auto; margin-right: auto; text-align: left;"><tbody>
<tr style="height: 30.85pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid solid double; border-width: 4.5pt 1pt 3pt 4.5pt; height: 30.85pt; padding: 0cm; width: 24.15pt;" width="32"><h4>No</h4></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 30.85pt; padding: 0cm; width: 70.05pt;" width="93"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Symptoms</span></b></div></td>   <td colspan="2" style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 3pt medium; height: 30.85pt; padding: 0cm; width: 227.8pt;" width="304"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Cause</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double solid none; border-width: 4.5pt 4.5pt 3pt medium; height: 30.85pt; padding: 0cm; width: 114pt;" width="152"><div align="center" class="MsoNormal" style="direction: ltr; text-align: center; unicode-bidi: embed;"><b><span style="font-family: Arial; letter-spacing: 0.2pt;">Remedy</span></b></div></td>  </tr>
<tr style="height: 62.2pt; page-break-inside: avoid;">   <td rowspan="7" style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1.1pt 4.5pt 4.5pt; height: 62.2pt; padding: 0cm; width: 24.15pt;" width="32"><div align="center" class="MsoNormal" style="direction: ltr; margin-left: 19.95pt; text-align: center; text-indent: -19.95pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">6.</span></b></div></td>   <td rowspan="7" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1.1pt 4.5pt medium; height: 62.2pt; padding: 0cm; width: 70.05pt;" width="93"><div class="MsoNormal" style="direction: ltr; margin-left: 4.3pt; text-align: justify; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Air leakage</span></b></div></td>   <td rowspan="3" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 62.2pt; padding: 0cm; width: 120.85pt;" width="161"><div class="MsoNormal" style="direction: ltr; text-align: justify; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (1)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Electromagnetic</span></div><div class="MsoNormal" style="direction: ltr; margin-left: 29.8pt; text-align: justify; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">valve</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 62.2pt; padding: 0cm; width: 106.95pt;" width="143"><div class="MsoNormal" style="direction: ltr; margin-left: 18pt; text-align: left; text-indent: -15.5pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(a)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Damaged valve   gasket due to   ingress of  foreign substances.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 62.2pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(a)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Replace valve   </span></div><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">     packing.</span></div><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(b) </span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Eliminate foreign   </span></div><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">     substances.</span></div></td>  </tr>
<tr style="height: 59.8pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 59.8pt; padding: 0cm; width: 106.95pt;" width="143"><div class="MsoNormal" style="direction: ltr; margin-left: 22.85pt; text-align: justify; text-indent: -18pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(b)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Damaged valve seat</span></div><div align="center" class="MsoNormal" style="direction: ltr; margin-left: 27pt; text-align: center; text-indent: -3pt; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">due   to ingress of foreign substances.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 59.8pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Replace valve body.</span></div></td>  </tr>
<tr style="height: 42.45pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 42.45pt; padding: 0cm; width: 106.95pt;" width="143"><div align="center" class="MsoNormal" style="direction: ltr; margin-left: 27.75pt; text-align: center; text-indent: -27.75pt; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">(c)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Broken electro-magnetic   valve lever.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 42.45pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Replace lever.</span></div></td>  </tr>
<tr style="height: 29.7pt; page-break-inside: avoid;">   <td colspan="2" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 29.7pt; padding: 0cm; width: 227.8pt;" width="304"><div class="MsoNormal" style="direction: ltr; text-align: justify; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (2)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Main valve Same as (a) and (b) above. </span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 29.7pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Same as <b>(a)</b> and <b>(b)</b>   above.</span></div></td>  </tr>
<tr style="height: 27.9pt; page-break-inside: avoid;">   <td colspan="2" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 27.9pt; padding: 0cm; width: 227.8pt;" width="304"><div class="MsoNormal" style="direction: ltr; text-align: justify; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (3)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Air   leakage from piping sysem.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 27.9pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Check fastenings for   looseness.</span></div></td>  </tr>
<tr style="height: 42.45pt; page-break-inside: avoid;">   <td colspan="2" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1.1pt 1pt medium; height: 42.45pt; padding: 0cm; width: 227.8pt;" width="304"><div class="MsoNormal" style="direction: ltr; text-align: left; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (4)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Increase of air leakage from airing  </span></div><div class="MsoNormal" style="direction: ltr; margin-left: 24.15pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">valve.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 42.45pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Measure discharge of airing   valve,and if the measured valve does not complete with the specified value,   replace it.</span></div></td>  </tr>
<tr style="height: 33.85pt; page-break-inside: avoid;">   <td colspan="2" style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1.1pt 4.5pt medium; height: 33.85pt; padding: 0cm; width: 227.8pt;" width="304"><div class="MsoNormal" style="direction: ltr; text-align: justify; unicode-bidi: embed;"><b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> (5)</span></b><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;"> Others.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 33.85pt; padding: 0cm; width: 114pt;" width="152"><div class="MsoNormal" style="direction: ltr; margin-left: 10.75pt; text-align: left; unicode-bidi: embed;"><span style="font-family: Arial; font-size: 11pt; letter-spacing: 0.4pt;">Check gaskets and fastening   at joints.</span></div></td>  </tr>
</tbody></table><div style="text-align: center;"></div><div style="text-align: center;">   </div>  <br />
<h3 class="post-title entry-title"><a href="http://hayatei.blogspot.com/2010/12/high-voltage-circuit-breaker-part-2.html">HIGH VOLTAGE CIRCUIT BREAKER PART 2</a></h3>

HIGH VOLTAGE CIRCUIT BREAKER

SUB - OBJECTIVE At the end of the lesson the Trainee will be able to analyze the high voltage circuit breakers faults find it out and fix ...

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Electrical Equipment Numbering System

<div style="text-align: justify;">The electrical equipments are numbered in accordance with "CATALYTIC - KULJIAN's PROJECT PROCEDURE MANUAL" as follows:<br />
<br />
<br />
The prefix letters identifying the electrical equipments in this plant are as <br />
follows:<br />
SG    - 7.2KV metal-clad switch-ear<br />
US    - secondary unit substation <br />
BD    - bus duct<br />
MCC    - motor control center<br />
TR    - transformer board<br />
DB    - power panel, power distribution panel, DC distribution board<br />
L P        - 11ga-rg panel<br />
R           - battery charger<br />
BA        - battery<br />
N            - power receptacle, air conditioning control panel, relay box, interface  <br />
                 panel, etc.<br />
P(EM)     - motor for pump <br />
A(EM)     - motor for agitator <br />
F(EM)     - motor for filter or screen<br />
C( EM)    - motor for fan or blower `:<br />
M( EM)    - motor for handling equipment</div><br />
M.V Motors (6.9 Kv) – Vertical-<br />
<br />
<br />
<table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="border-collapse: collapse; border: medium none; width: 565px;"><tbody>
<tr style="height: 10.3pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid double double; border-width: 4.5pt 1pt 4.5pt 4.5pt; height: 10.3pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;"><span>        </span>Trouble<span>        </span></span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid double none; border-width: 4.5pt 1pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Cause</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double double none; border-width: 4.5pt 4.5pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Remedy</span></b></div></td>  </tr>
<tr style="height: 10.3pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 10.3pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;">1-</span></b><span style="font-family: Arial; font-size: 11pt;"> Doesn't rotate <span>  </span></span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"><span>    </span>(No-sound).</span></div><div class="MsoNormal"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div class="MsoNormal" style="margin: 0cm 1.65pt 0.0001pt 8.3pt; text-indent: -8.3pt;"><span style="font-family: Arial; font-size: 11pt;">- Connections not complete.</span></div><div class="MsoNormal" style="margin-left: 8.3pt; text-indent: -8.3pt;"><span style="font-family: Arial; font-size: 11pt;">- Defected   circuit between supply and motor terminals (Disconnection – bad connection).</span></div><div class="MsoNormal" style="margin-left: 8.3pt; text-indent: -8.3pt;"><span style="font-family: Arial; font-size: 11pt;">-   Stator circuit open.</span></div><div class="MsoNormal" style="margin-left: 8.3pt; text-indent: -8.3pt;"><span style="font-family: Arial; font-size: 11pt;">-   Single phase connection (burn fuse).</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   circuit for disconnection or bad connection.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- <span> </span>Check terminals.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   stator coil and replace it if necessary.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   fuses and replace it. </span></div></td>  </tr>
<tr style="height: 10.3pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 10.3pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;">2-</span></b><span style="font-family: Arial; font-size: 11pt;"> Over load trips <span>  </span></span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"><span>     </span>at   starting</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Defected starter.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Short circuited coil.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Mechanical jam.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   starter and repair or replace it.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   stator coil and replace if necessary.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check if the load locked.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   coupling, and ensure the alignment.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   the air-gap clearance and adjust it.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   bearing and replace if necessary. </span></div></td>  </tr>
<tr style="height: 10.3pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 10.3pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;"><span>        </span>Trouble<span>        </span></span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Cause</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Remedy</span></b></div></td>  </tr>
<tr style="height: 10.3pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 10.3pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;">3-</span></b><span style="font-family: Arial; font-size: 11pt;"> Noise and </span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"><span>     </span>vibration</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- 1   phase operation (worn fuses – circuit disconnections).</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Unbalance voltages.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Mechanical fault.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Vibration from load.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Unsymmetrical coupling.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 10.3pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check all phases </span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Replace worn fuse </span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">-   Dissemble the motor and check rotor bars.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   air-gap clearance and adjust it.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Find out any foreign matters</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check shaft.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check end rings.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check coupling and adjust it.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check load fixing screws. </span></div></td>  </tr>
<tr style="height: 162.2pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 162.2pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;">4-</span></b><span style="font-family: Arial; font-size: 11pt;"> Extreme temperature and smoke.   </span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 162.2pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Up-normal high voltages.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Up-normal low voltage.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Wrong frequency.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Weak cooling.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Over load.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Burn coil.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Mechanical fault </span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 162.2pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div class="MsoNormal" style="margin-left: 8pt; text-indent: -8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   supply voltage and<span>     </span>frequency and   adjust it.</span></div><div class="MsoNormal" style="margin-left: 8pt; text-indent: -7.1pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   cooling system and melt<span>    </span>water.</span></div><div class="MsoNormal" style="margin-left: 8pt; text-indent: -8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   if the load is over or there is some other faults in load.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   stator winding and repair it or replace it.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check air-gap clearance.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Check   bearing temperature and lubrication system.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check alignment. </span></div><div class="MsoNormal"><br />
</div></td>  </tr>
<tr style="height: 109.1pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 109.1pt; padding: 0cm 5.4pt; width: 99.9pt;" valign="top" width="133">   <div class="MsoNormal"><b><span style="font-family: Arial; font-size: 11pt;">5-</span></b><span style="font-family: Arial; font-size: 11pt;"> Defected bearing.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 109.1pt; padding: 0cm 5.4pt; width: 181.3pt;" valign="top" width="242">   <div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Oil deterioration.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Excess motor pushing.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><span style="font-family: Arial; font-size: 11pt;">- Wrong   thrust bearing erection.</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 109.1pt; padding: 0cm 5.4pt; width: 142.7pt;" valign="top" width="190">   <div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check oil for:- </span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><b><span style="font-family: Arial; font-size: 11pt;"><span>   </span>a.</span></b><span style="font-family: Arial; font-size: 11pt;"> foreign matters.</span></div><div class="MsoNormal" style="margin-left: 8.8pt; text-indent: -8.8pt;"><b><span style="font-family: Arial; font-size: 11pt;"><span>   </span>b.</span></b><span style="font-family: Arial; font-size: 11pt;"> lake of oil.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check oil cooling system</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Check if there is a shaft current.</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">- Replace bearing.</span></div></td></tr>
</tbody></table>

Electrical Equipment Numbering System

The electrical equipments are numbered in accordance with "CATALYTIC - KULJIAN's PROJECT PROCEDURE MANUAL" as follows: The ...

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Solving Economic Dispatch and Optimal Power Flow

<div class="MsoNormal" style="text-align: justify;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;">The economic dispatch problem is described as an act of minimizing the total fuel cost of the committed generators while satisfying the demand, network constraints. and plant.</span></div><div class="MsoNormal" style="text-align: justify;"><br />
</div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;">Follow these steps.</span></u></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"> </span></u></div><div class="separator" style="clear: both; text-align: justify;"><a href="http://hayatei.blogspot.com/2010/12/economic-dispatch-problem-part-2_13.html"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTCFjOzpYY8x0JHyZeEReAfBqK_2I-htmZg2RLPZhndbajiACwU3yEswryPFiIAPsTUfC_p_HOA3oAPATQCdhZqS89-2nelFgSYsMV-VlI1BV_ua4oQnv5Z73ibwExWv6_MXkRgAkKhZw7/s1600/eldga1.bmp" /></span></a></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"><br />
</span></u></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"><br />
</span></u></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"><br />
</span></u></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;">Step II Solution Methodology</span></u></div><div class="MsoNormal" style="text-align: justify;"><u><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"> </span></u></div><ol start="1" style="margin-top: 0in; text-align: justify;" type="1"><li class="MsoNormal" style="line-height: 32px;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;">Choose a reference plant .For economic dispatch choose the plant with large capacity (range). In case of optimal power flow the slack bus is the reference bus.</span></li>
<li class="MsoNormal" style="line-height: 32px;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;">For  both problems the number of  control(independent) variables to be determined in n-1.The reference plant  allocation is determined from the  constraint equations A2.</span></li>
</ol><div class="separator" style="clear: both; text-align: justify;"><a href="http://hayatei.blogspot.com/2010/12/economic-dispatch-problem-part-2_13.html"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzKAskqx6m__R-2udWULKxH_LPyZ8PzkmwknKYS6sF6PWOictVmQxJWd7ddCddpy-zh29aHp9ONnXlMS5cdxm48RttlC1fwqQS5s-KrqtzKOqtE1hBWcZ3FTnEqvg3Z7_Jjp-mVzR-Og9b/s1600/eldga2.bmp" /></a></div><div style="text-align: justify;"><span class="Apple-style-span" style="line-height: 32px;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"></span></span><br />
<span class="Apple-style-span" style="line-height: 32px;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif;"> </span></span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;">While solving the quadratic equation consider the positive solution. Check for the plant limits. If it is violating the limits allocate that particular limit.</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;">3. </span><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;">Write a function file of n-1 control variables which return the total fuel cost fuel cost and the allocation. In case optimal power flow you have to use a power flow routine to determine the reference plant(slack bus) allocation.</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;"></span><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;">4.The data file (fuel cost equations ,demand,loss coefficients,bus data,line data) and the gaoptions is put in a file  and the function file is run by the GA with options.</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;"></span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;"> </span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;"></span><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; line-height: 32px;">The program can be downloaded from the matlab cetral      file excange</span></div>

Solving Economic Dispatch and Optimal Power Flow

The economic dispatch problem is described as an act of minimizing the total fuel cost of the committed generators while satisfying the dema...

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TROUBLESHOOTING FOR L.V. MOTORS

<div style="color: white;"> TROUBLE SHOOTING FOR L.V. MOTORS</div><br />
Table 1-3 Troubleshooting<br />
(1) Load is disconnected but motor doesn't rotate<br />
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<br />
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<table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: 20.65pt;"><tbody>
<tr style="height: 17.8pt; page-break-inside: avoid;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid double double; border-width: 4.5pt 1pt 4.5pt 4.5pt; height: 17.8pt; padding: 0cm; width: 103.1pt;" width="137"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">Trouble</span></b><b><span style="font-family: Arial; font-size: 11pt;"></span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid double none; border-width: 4.5pt 1pt 4.5pt medium; height: 17.8pt; padding: 0cm; width: 167.4pt;" width="223"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">cause</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double double none; border-width: 4.5pt 4.5pt 4.5pt medium; height: 17.8pt; padding: 0cm; width: 161.1pt;" width="215"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 7.1pt;"><b><span style="font-family: Arial; font-size: 11pt;">Remedy</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>  </tr>
<tr style="height: 77.9pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 77.9pt; padding: 0cm; width: 103.1pt;" width="137"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Makes a</span></div><div class="MsoNormal" style="margin-left: 8.85pt; text-indent: -1.9pt;"><span style="font-family: Arial; font-size: 11pt;">groaning   sound</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 77.9pt; padding: 0cm; width: 167.4pt;" width="223"><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Faulty switch contact</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Blown fuse</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">One phase wire of the power</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">supply open</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Stator coil open</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Stator and rotor touching due</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">bearing wear</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 77.9pt; padding: 0cm; width: 161.1pt;" width="215"><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Adjust the contact</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Replace</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Replace</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><br />
</div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><br />
</div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Repair by a specialist</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.1pt;"><span style="font-family: Arial; font-size: 11pt;">Replace the bearing</span></div></td>  </tr>
<tr style="height: 50.2pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 50.2pt; padding: 0cm; width: 103.1pt;" width="137"><div class="MsoNormal" style="margin: 0cm 4.5pt 0.0001pt 8.6pt; text-indent: 0.3pt;"><span style="font-family: Arial; font-size: 11pt;">Starts   in either direction when</span></div><div class="MsoNormal" style="margin: 0cm 4.5pt 0.0001pt 8.85pt; text-indent: 0.05pt;"><span style="font-family: Arial; font-size: 11pt;">Turned   by hand</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 50.2pt; padding: 0cm; width: 167.4pt;" width="223"><div class="MsoNormal" style="line-height: 150%; text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Three-phase is   operating as</span></div><div class="MsoNormal" style="line-height: 150%; text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">single-phase</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 50.2pt; padding: 0cm; width: 161.1pt;" width="215"><div class="MsoNormal" style="line-height: 150%; text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">Check the   power source with</span></div><div class="MsoNormal" style="line-height: 150%; text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt; line-height: 150%;">a voltmeter</span></div></td>  </tr>
<tr style="height: 63.15pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 63.15pt; padding: 0cm; width: 103.1pt;" width="137"><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Doesn't make</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">any noise</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 63.15pt; padding: 0cm; width: 167.4pt;" width="223"><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Stator coil open</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Outside the motor</span></div><div class="MsoNormal" style="margin: 0cm 43.2pt 0.0001pt; text-align: justify; text-indent: -18pt;"><span style="font-family: Symbol; font-size: 11pt;">·<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">           </span></span><span dir="LTR"><span style="font-family: Arial; font-size: 11pt;">Power failure</span></span></div><div class="MsoNormal" style="margin: 0cm 43.2pt 0.0001pt; text-align: justify; text-indent: -18pt;"><span style="font-family: Symbol; font-size: 11pt;">·<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">           </span></span><span dir="LTR"><span style="font-family: Arial; font-size: 11pt;">Open connection wire</span></span></div><div class="MsoNormal" style="margin: 0cm 43.2pt 0.0001pt; text-align: justify; text-indent: -18pt;"><span style="font-family: Symbol; font-size: 11pt;">·<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">           </span></span><span dir="LTR"><span style="font-family: Arial; font-size: 11pt;">Faulty switch contact</span></span></div><div class="MsoNormal" style="margin: 0cm 43.2pt 0.0001pt; text-align: justify; text-indent: -18pt;"><span style="font-family: Symbol; font-size: 11pt;">·<span style="font-family: "Times New Roman"; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;">           </span></span><span dir="LTR"><span style="font-family: Arial; font-size: 11pt;">Faulty starter contact</span></span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 63.15pt; padding: 0cm; width: 161.1pt;" width="215"><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Repair by a specialist</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Contact the power company</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Check the source wiring</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Adjust the contact</span></div></td>  </tr>
</tbody></table><br />
(2) Rotates, but:<br />
<br />
<div align="center"><table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: 21.55pt;"><tbody>
<tr style="height: 25.6pt; page-break-inside: avoid;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid double double; border-width: 4.5pt 1pt 4.5pt 4.5pt; height: 25.6pt; padding: 0cm; width: 133.7pt;" width="178"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">Trouble</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid double none; border-width: 4.5pt 1pt 4.5pt medium; height: 25.6pt; padding: 0cm; width: 148.55pt;" width="198"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 7.2pt;"><b><span style="font-family: Arial; font-size: 11pt;">cause</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double double none; border-width: 4.5pt 4.5pt 4.5pt medium; height: 25.6pt; padding: 0cm; width: 139.45pt;" width="186"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 7.2pt;"><b><span style="font-family: Arial; font-size: 11pt;">Remedy</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>  </tr>
<tr style="height: 56.5pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 56.5pt; padding: 0cm; width: 133.7pt;" width="178"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Rotates in the</span></div><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">wrong direction</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 56.5pt; padding: 0cm; width: 148.55pt;" width="198"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Connection   error</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 56.5pt; padding: 0cm; width: 139.45pt;" width="186"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Change any   two of the   </span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;">  three phase   source</span></div></td>  </tr>
<tr style="height: 19.25pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 19.25pt; padding: 0cm; width: 133.7pt;" width="178"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Fuse blows</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 19.25pt; padding: 0cm; width: 148.55pt;" width="198"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Shorted   lead wire</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 19.25pt; padding: 0cm; width: 139.45pt;" width="186"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Replace</span></div></td>  </tr>
<tr style="height: 37.25pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 37.25pt; padding: 0cm; width: 133.7pt;" width="178"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Speed doesn't</span></div><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">increase</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 37.25pt; padding: 0cm; width: 148.55pt;" width="198"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Faulty   star-delta starter</span></div><div class="MsoNormal" style="margin-left: 9.05pt; text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">contact</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 37.25pt; padding: 0cm; width: 139.45pt;" width="186"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Adjust</span></div></td>  </tr>
<tr style="height: 46.15pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 46.15pt; padding: 0cm; width: 133.7pt;" width="178"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Groans</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 46.15pt; padding: 0cm; width: 148.55pt;" width="198"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Over current   Rotor and stator   </span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> touching</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Overheating   Rotor and stator  </span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> touching</span></div><div class="MsoNormal" style="margin-left: 9.05pt; text-indent: 7.2pt;"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 46.15pt; padding: 0cm; width: 139.45pt;" width="186"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Repair by   a specialist</span></div><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Replace   the stator winding</span></div><div class="MsoNormal" style="text-indent: 7.2pt;"><br />
</div></td>  </tr>
<tr style="height: 54.1pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 54.1pt; padding: 0cm; width: 133.7pt;" width="178"><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">Make a high-pitched</span></div><div class="MsoNormal" style="text-indent: 7.2pt;"><span style="font-family: Arial; font-size: 11pt;">metallic noise</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 54.1pt; padding: 0cm; width: 148.55pt;" width="198"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Faulty   bearing</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 54.1pt; padding: 0cm; width: 139.45pt;" width="186"><div class="MsoNormal"><span style="font-family: Arial; font-size: 11pt;"> Replace   the bearing</span></div></td>  </tr>
</tbody></table></div><br />
<br />
(3) Rotates when the load is disconnected but when the load is connected it<br />
<br />
<table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: 19.75pt;"><tbody>
<tr style="height: 30.1pt; page-break-inside: avoid;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid double double; border-width: 4.5pt 1pt 4.5pt 4.5pt; height: 30.1pt; padding: 0cm; width: 83.8pt;" width="112"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">Trouble</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid double none; border-width: 4.5pt 1pt 4.5pt medium; height: 30.1pt; padding: 0cm; width: 150.7pt;" width="201"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">cause</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double double none; border-width: 4.5pt 4.5pt 4.5pt medium; height: 30.1pt; padding: 0cm; width: 157.5pt;" width="210"><div align="center" class="MsoNormal" style="text-align: center; text-indent: 6.95pt;"><b><span style="font-family: Arial; font-size: 11pt;">Remedy</span></b><span style="font-family: Arial; font-size: 11pt;"></span></div></td>  </tr>
<tr style="height: 92.75pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 92.75pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Belt fly's off</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 92.75pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Over load</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Driven machine doesn't   </span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">rotate due to</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">trouble</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Faulty installation or </span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">improper belt</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">attachment</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 92.75pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Drop to the rated load</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Adjust the driven machine</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Align the centers of the</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">sheaves and correct the</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">installation</span></div></td>  </tr>
<tr style="height: 49.75pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 49.75pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Switch </span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">over-heated</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 49.75pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Insufficient switch capacity</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><br />
</div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Overload</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 49.75pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Replace with one having the</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">rated capacity</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Drop to the rated load</span></div></td>  </tr>
<tr style="height: 58pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 58pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Fuse blows</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 58pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Insufficient fuse capacity</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><br />
</div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Overload</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 58pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Replace with one having the</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">rated capacity</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Drop to the rated load</span></div></td>  </tr>
<tr style="height: 64.2pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 64.2pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Overheats</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 64.2pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Unbalance of power source</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Voltage drop Overload</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 64.2pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="margin-left: 5.9pt; text-indent: 1.05pt;"><span style="font-family: Arial; font-size: 11pt;">Consult   with the power company</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Drop to the rated load</span></div></td>  </tr>
<tr style="height: 62.65pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 62.65pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Speed </span></div><div class="MsoNormal" style="margin-left: 6.4pt; text-align: justify; text-indent: 0.55pt;"><span style="font-family: Arial; font-size: 11pt;">suddenly drops</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 62.65pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Voltage drop</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Overload</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 62.65pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Consult with the power</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">company</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Drop to the rated load</span></div></td>  </tr>
<tr style="height: 42.35pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 42.35pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Stops</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 42.35pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Ball bearing damaged by  </span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">over- heat</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 42.35pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Replace the ball bearing</span></div></td>  </tr>
<tr style="height: 53.75pt; page-break-inside: avoid;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 53.75pt; padding: 0cm; width: 83.8pt;" width="112"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Makes a funny</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">noise during</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">operation</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 53.75pt; padding: 0cm; width: 150.7pt;" width="201"><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Three-phase is operating as</span></div><div class="MsoNormal" style="text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">single-phase</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 53.75pt; padding: 0cm; width: 157.5pt;" width="210"><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">Check the power source with</span></div><div class="MsoNormal" style="text-align: justify; text-indent: 6.95pt;"><span style="font-family: Arial; font-size: 11pt;">a voltmeter</span></div></td></tr>
</tbody></table>

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