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<a href="/News/" >新聞中心</a> > <a href="/CommonProblem/" >常見(jiàn)問(wèn)題</a> </div> </div> <div id="jfp9hn99lt" class="f30 text-black"><span>常見(jiàn)問(wèn)題</span></div> </div> <div id="jfp9hn99lt" class="content"> <h1 class="f24 height fs100 text-black text-center">電熱管的選購需要注意哪些細節</h1> <div id="jfp9hn99lt" class="date f14 text-center text-gray margin-big-bottom padding"><span>上傳時(shí)間：2018-04-18 來(lái)源：關(guān)鍵詞：電熱管瀏覽量：1376</span></div> <div id="jfp9hn99lt" class="info f16 text-justify"><p> <span style="font-size:18px;"> 電熱管的選購需要注意哪些細節呢？是不是只需要了解它的構造就行了呢？回答肯定不是的。下面我們就將如何選擇質(zhì)量好的電熱管的方法告訴大家：</span> </p> <p style="text-align:center;"> <img src="/upload/2018-04/18/dianreguan2.jpg" title="電熱管 (2)" alt="電熱管 (2)" width="380" height="380" align="" /> </p> <p> <span style="font-size:18px;"> 首先你要對它的耐熱性有所了解：元件在規定的試驗條件和試驗電壓下應承受1000次循環(huán)耐熱性試驗，而不發(fā)生損壞; 在試驗電壓下，元件從環(huán)境溫度升至試驗溫度時(shí)間應不大于15min; 還有就是額定功率偏差：在充分發(fā)熱的條件下，元件的額定功率的偏差應不超過(guò)下列規定的范圍；對額定功率小于等于100W的元件為：±10%。對額定功率大于100W的元件為+5%～-10%或10W，取兩者中的較大值; 絕緣電阻也是非常重要的零件：出廠(chǎng)檢驗時(shí)冷態(tài)絕緣電阻應不小于50MΩ，密封試驗后，長(cháng)期存放或者使用后的絕緣電阻應不消與MΩ，工作溫度下的熱態(tài)絕緣電阻應不低于公式中的計算值，但最小應不小于1MΩ;最后是絕緣耐壓強度：元件應在規定的試驗條件和試驗電壓下保持1min，而無(wú)閃絡(luò )和擊穿現象等等。</span> </p> <p> <br /> </p> <p> <span style="font-size:18px;"> 只有滿(mǎn)足以上幾個(gè)特點(diǎn)，才能算您選購了質(zhì)量好的電熱管了！</span> </p> <p> <span style="font-size:18px;"><br /> </span> </p></div> </div> <br/> <br/> <div id="jfp9hn99lt" class="share text-right clearfix"> <div id="jfp9hn99lt" class="bdsharebuttonbox fr"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_tqq" data-cmd="tqq" title="分享到騰訊微博"></a><a href="#" class="bds_renren" data-cmd="renren" title="分享到人人網(wǎng)"></a><a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a></div> 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