dl 401-91.html

电气专业设计规范

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span>a.<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>热塑性材料。以聚氯乙烯或醋酸乙烯酯共聚物为基材用于额定电压</span><i>U</i><sub>0</sub>/<i
style='mso-bidi-font-style:normal'>U</i><span lang=ZH-CN style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>≤</span>1.8/3kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>电缆的绝缘材料</span>(<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>简称</span>PVC/A)<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>；以上述材料为基材用于额定电压</span><i>U</i><sub>0</sub>/<i
style='mso-bidi-font-style:normal'>U</i><span lang=ZH-CN style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>＞</span>1.8/3kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>电缆的绝缘材料</span>(<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>简称</span>PVC/B)<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>；以热塑性聚乙烯为基材的绝缘材料</span>(<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>简称</span>PE)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>。</span><span lang=ZH-CN style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span><span style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span>b.<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>弹性材料或热固性材料。以乙丙橡胶或其它类似化合物</span>(EPM<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>或</span>EPDM)<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>为基材的绝缘材料</span>(<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>简称</span>EPR)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>；以交联聚乙烯为基材的绝缘材料</span>(<span lang=ZH-CN style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>简称</span>XLPE)<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<P class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><A NAME="A3"></A>3<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>使用条件</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></P>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp; </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>在选用电缆时，应考虑以下使用条件。</span><span lang=ZH-CN style='font-family:
宋体;mso-hansi-font-family:"Times New Roman"'> </span><span style='mso-bidi-font-size:
10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>运行条件</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.1<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>系统额定电压。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>为发电机出线选用电缆时，应按照我国发电机电压等级</span>13.8<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>、</span>15.75<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>、</span>8<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>、</span>20kV<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>选择其额定电压。</span><span lang=ZH-CN style='font-family:宋体;
mso-hansi-font-family:"Times New Roman"'> </span><span style='mso-bidi-font-size:
10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.2<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>系统最高工作电压。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.3<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>雷电冲击电压。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.4<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>操作冲击电压。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.5<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>系统频率。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.6<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>系统的接地方式。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp; </span><span style="mso-spacerun:
yes">&nbsp;&nbsp;</span></span>a.<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>中性点非有效接地</span>(<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>包括中性点不接地和经消弧线圈接地</span>)<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>，一次接地故障的最长允许持续时间。</span><span
lang=ZH-CN style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span>b.<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>中性点有效接地</span>(<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>包括中性点直接接地和经小电阻接地</span>)<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.7<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>电缆终端的环境条件。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>如要求厂商同时提供电缆终端，需提出终端安装地点的海拔高度和大气污秽等级。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.8<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>最大载流量。</span><span lang=ZH-CN
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>应计及三种情况：持续运行载流量、周期运行</span>(<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>应考虑负荷曲线</span>)<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>载流量、事故紧急运行或过负荷运行时的载流量。</span><span
lang=ZH-CN style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.9<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>预期的相间或相对地短路时流过的对称和不对称的短路电流。</span><span
lang=ZH-CN style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
style='mso-bidi-font-size:10.0pt'><o:p></o:p></span></p>

<p class=MsoNormal style='line-height:18.0pt;mso-layout-grid-align:none'>3.1.10<span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span><span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";