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<h4 class="std">4.2.2.1 Conversion Units</h4>
<p>Conversion units are defined according to a conversion factor (and conversion offset for temperature) relative to a specified base SI unit.</p><p>Figure 6 illustrates an instance diagram.</p>
<table><tr><td><img alt="Conversion Units" src="diagrams/conversion-units.png" usemap="#f6"><map name="f6"><area shape="rect" coords="8,8,176,236" href="../ifckernel/lexical/ifccontext.htm" alt="IfcContext"><area shape="rect" coords="208,8,376,32" href="../ifcmeasureresource/lexical/ifcunitassignment.htm" alt="IfcUnitAssignment"><area shape="rect" coords="408,8,576,92" href="../ifcmeasureresource/lexical/ifcconversionbasedunitwithoffset.htm" alt="IfcConversionBasedUnitWithOffset"><area shape="rect" coords="608,8,776,20" href="../ifcmeasureresource/lexical/ifcunitenum.htm" alt="IfcUnitEnum"><area shape="rect" coords="608,32,776,44" href="../ifcmeasureresource/lexical/ifclabel.htm" alt="IfcLabel"><area shape="rect" coords="608,56,776,92" href="../ifcmeasureresource/lexical/ifcmeasurewithunit.htm" alt="IfcMeasureWithUnit"><area shape="rect" coords="808,8,976,20" href="../ifcmeasureresource/lexical/ifcreal.htm" alt="IfcReal"><area shape="rect" coords="808,32,976,80" href="../ifcmeasureresource/lexical/ifcsiunit.htm" alt="IfcSIUnit"><area shape="rect" coords="1008,8,1176,20" href="../ifcmeasureresource/lexical/ifcsiprefix.htm" alt="IfcSIPrefix"><area shape="rect" coords="1008,32,1176,44" href="../ifcmeasureresource/lexical/ifcsiunitname.htm" alt="IfcSIUnitName"></map></td></tr><tr><td><p class="figure">Figure 6 &mdash; Conversion Units</p></td></tr></table>

<hr>
<h4>Electrical System Design</h4>
<p>This concept is used by entities for exchanges as shown.</p>
<table class="exchange">
<tr><td></td><td><a href="../views/electrical-system-design/facility-criteria.htm"><image width="16" src="../../img/mvd-facility-criteria.png" title="Facility Criteria"></image></a></td>
<td><a href="../views/electrical-system-design/discipline-specifications.htm"><image width="16" src="../../img/mvd-discipline-specifications.png" title="Discipline Specifications"></image></a></td>
<td><a href="../views/electrical-system-design/project-definition.htm"><image width="16" src="../../img/mvd-project-definition.png" title="Project Definition"></image></a></td>
<td><a href="../views/electrical-system-design/space-program.htm"><image width="16" src="../../img/mvd-space-program.png" title="Space Program"></image></a></td>
<td><a href="../views/electrical-system-design/product-program.htm"><image width="16" src="../../img/mvd-product-program.png" title="Product Program"></image></a></td>
<td><a href="../views/electrical-system-design/design-early.htm"><image width="16" src="../../img/mvd-design-early.png" title="Design Early"></image></a></td>
<td><a href="../views/electrical-system-design/system-layout.htm"><image width="16" src="../../img/mvd-system-layout.png" title="System Layout"></image></a></td>
<td><a href="../views/electrical-system-design/design-schematic.htm"><image width="16" src="../../img/mvd-design-schematic.png" title="Design Schematic"></image></a></td>
<td><a href="../views/electrical-system-design/product-type-template.htm"><image width="16" src="../../img/mvd-product-type-template.png" title="Product Type Template"></image></a></td>
<td><a href="../views/electrical-system-design/product-template.htm"><image width="16" src="../../img/mvd-product-template.png" title="Product Template"></image></a></td>
<td><a href="../views/electrical-system-design/product-type-selection.htm"><image width="16" src="../../img/mvd-product-type-selection.png" title="Product Type Selection"></image></a></td>
<td><a href="../views/electrical-system-design/system-operation.htm"><image width="16" src="../../img/mvd-system-operation.png" title="System Operation"></image></a></td>
<td><a href="../views/electrical-system-design/design-coordinated.htm"><image width="16" src="../../img/mvd-design-coordinated.png" title="Design Coordinated"></image></a></td>
</tr><tr><td><a href="../ifckernel/lexical/ifcproject.htm">IfcProject</a></td><td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
<td>O<br>O</td>
</tr>
</table>
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