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composi</a></li> <li><a title="Rubber sheathed cable" href="/index.php?case=archive&act=list&catid=55">Rubber sheathed cable</a></li> </ul> </div> </li> <li ><a href="/index.php?case=archive&act=list&catid=20" title="Album" target="" class="one">Album</a> <div class="nav_er "> <ul class="div_dl "> <li><a title="Honor" href="/index.php?case=archive&act=list&catid=11">Honor</a></li> <li><a title="Equipment" href="/index.php?case=archive&act=list&catid=49">Equipment</a></li> </ul> </div> </li> <li ><a href="/index.php?case=archive&act=list&catid=25" title="Partner" target="" class="one">Partner</a> </li> <li ><a href="/index.php?case=archive&act=list&catid=5" title="Contact" target="" class="one">Contact</a> </li> </ul> </div> <div class="nav_btn"><span></span></div> </div> </div> </header> <div class="banner_nei"> <div class="banner_nei_center"> <div class=bg> <img src="http://en.ahhonglin.com//cn/upload/images/202111/16377217253814.jpg" /> </div> <div class=txt> <h1>Industry news </h1> <p></p> </div> </div> </div> <div class="box box2"> <div class="box2_t"></div> <div class="box2_b"></div> <div class="left"> <!--只展开当前栏目所在一级栏目下的分类--> <div class="left1" > <div id="catalog" > <ul class="topmenu"> <li ><a title="technical support" href="/index.php?case=archive&act=list&catid=19" ><span class="figure mr5"></span>technical support</a> <ol class="submenu"> <i></i> </ol> </li> <li ><a title="Common Problem" href="/index.php?case=archive&act=list&catid=26" ><span class="figure mr5"></span>Common Problem</a> <ol class="submenu"> <i></i> </ol> </li> <li ><a title="Company dynamics" href="/index.php?case=archive&act=list&catid=9" ><span class="figure mr5"></span>Company dynamics</a> <ol class="submenu"> <i></i> </ol> </li> <li class="on" ><a title="Industry news" href="/index.php?case=archive&act=list&catid=13" class="on"><span class="figure mr5"></span>Industry news</a> <ol class="submenu"> <i></i> </ol> </li> </ul> </div> <!--只展开当前栏目所在一级栏目下的分类--> </div> </script></div> <div class="right"> <div class="right1 news_lists"> <div id="content"> <div class="wz_title"><h3>Basic knowledge of overhead cable</h3></div> <div class="contentinfo pc_show">Author：<a>hlyb</a> Add Time：2016-05-10 16:38:36 </div> <!-- 正文 --> <p>Overhead cables are suitable for overhead power lines with AC rated voltage of 35kV and below. They are used in cities and towns, high-rise buildings, forest areas and other places with high safety requirements. Overhead cables are generally used at voltage levels of 10kV and below. The long-term working temperature shall be polyvinyl chloride (PVC) and polyethylene (PE) insulation, which shall not exceed 70 ℃; Cross linked polyethylene (XLPE) insulation shall not exceed 90 ℃. The laying temperature of overhead cable shall not be lower than - 20 ℃. For overhead fixed laying, a certain distance between cables and trees shall be considered during erection, and frequent contact with trees is allowed during cable operation.</p><p>Technical performance requirements for overhead cables:</p><p>① Conductors shall be compacted round stranded conductors</p><p>② The breaking force of the bearing strand shall comply with the provisions in table 10.</p><p>③ The insulation shall be black weather resistant PVC, polyethylene and cross-linked polyethylene</p><p>④ The cable shall be able to withstand the specified AC voltage test for 1 minute, and the insulation shall not break down.</p><p>⑤ 10kV cable with insulation shield shall be subject to partial discharge test, and its discharge capacity shall not be greater than 20pc.</p><p><br/></p><div class="clear"></div> <div class="blank30"></div> <div class="blank30"></div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=268"></script> <div class="view_n"> Browse： <script src="/index.php?case=archive&act=view_js&aid=268"></script></div> <div class="blank30"></div> <!-- 上下页开始 --> <div id="page"> <strong>On A：</strong><a href="/index.php?case=archive&act=show&aid=267">Comparison of several cable laying methods</a> <div class="blank10"></div> <strong>Next：</strong><a href="/index.php?case=archive&act=show&aid=270">Ultra high voltage cable sheath fault locator</a> </div> <!-- 上下页结束 --> <!-- 相关文章开始 --> <!-- 相关文章结束 --> <div class="blank30"></div> <a title="Return To The Top" href="#" class="clear floatright"><img alt="Return To The Top" src="/images/gotop.gif"></a> <div class="blank30"></div> </div> <div class="clear"></div> </div> <!-- 右侧结束 --> <div class="c_bottom"></div> <div class="clear"></div> </div> <!-- 中部结束 --> </div> <!--footer--> <div class="footer" style="visibility: visible;"> <div class="foot"> <div class="foot_box "> <dl> <dt><a href="/index.php?case=archive&act=list&catid=1" title="About">About</a></dt> <dd><a href="/index.php?case=archive&act=list&catid=7" title="Management philosophy">Management philosophy</a> <a href="/index.php?case=archive&act=list&catid=12" title="Message from the general manag">Message from the general manag</a> <a href="/index.php?case=archive&act=list&catid=25" title="Partners">Partners</a> <a href="/index.php?case=archive&act=list&catid=29" title="Qualifications">Qualifications</a> </dd> </dl> <dl> <dt><a href="/index.php?case=archive&act=list&catid=2" title="News">News</a></dt> <dd><a href="/index.php?case=archive&act=list&catid=19" title="technical support">technical support</a> <a href="/index.php?case=archive&act=list&catid=26" title="Common Problem">Common Problem</a> <a href="/index.php?case=archive&act=list&catid=9" title="Company dynamics">Company dynamics</a> <a href="/index.php?case=archive&act=list&catid=13" title="Industry news">Industry news</a> </dd> </dl> <dl> <dt><a href="/index.php?case=archive&act=list&catid=20" title="Album">Album</a></dt> <dd><a href="/index.php?case=archive&act=list&catid=49" title="Equipment">Equipment</a> <a href="/index.php?case=archive&act=list&catid=11" title="Honor">Honor</a> </dd> </dl> <dl class=bottom_list> <dt class=bottom_contact><a >Contact us</a></dt> <p class=bottom_tel>+86-0550-7516689</p> <p class=bottom_email>ahhl@ahhonglin.com</p> <p class=bottom_address>No. 163, Tongcheng economic and Industrial Park, Tianchang City, Anhui Province</p> </dl> <div class="foot_qr_codes"> <dl> <span>Scanning</span> <div class="foot_qr_codes"> <img width="130" src="/index.php?case=tool&act=qrcode" /> <div class="clear"></div> </div> </dl> </div> </div> </div> </div> <div class="copyright"> <div class="copyright_center"> Copyright ©：<a title="Anhui Honglin Instrument Cable Co., Ltd.--Low smoke halogen-free control cable, low smoke halogen-free power cable" href="/">Anhui Honglin Instrument Cable Co., Ltd.</a> <a href="http://beian.miit.gov.cn/"target="_blank">皖ICP备16006500号-1</a> <a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=34118102000427" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;"><img src="/images/gaba.png" style="float:left;"/><p style="float:left;height:20px;line-height:20px;margin: 3px 0px 0px 5px; 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