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class="nybanner"><img src="/skins/106676/images/nybanner.jpg"></div> <script src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="iqaqewgi6e" class="ncontent w_1100"> <div id="iqaqewgi6e" class="h-6">技術(shù)文章<span>您當(dāng)前的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 匝間沖擊耐電壓試驗儀使用方法測試注意事項</span></div>  <div id="iqaqewgi6e" class="n-3 c-news"> <div id="iqaqewgi6e" class="newsnr"> <h1>匝間沖擊耐電壓試驗儀使用方法測試注意事項</h1> <p class="source"><span>日期：2019-03-30</span><span>瀏覽：2416次</span></p> <div> <p style="margin: 0px 0px 0px 30pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><strong style="font-family:??????; font-size:16px; font-stretch:normal; line-height:30px">繞組匝間沖擊電壓試驗儀</strong>的電路結(jié)構(gòu)如方框圖所示，電路由CRT和主機系統(tǒng)組成。</p><p style="margin: 0px 0px 0px 30.05pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">工作過程：由市電供電220V/50Hz電源，一路去CRT和閘流管燈絲預(yù)熱；另一路經(jīng)延時電路控制。燈絲預(yù)熱約10min受脈沖信號觸發(fā)單元控制后才接通高壓裝置系統(tǒng)，經(jīng)高壓整流對脈沖儲能電容器充電，閘流管受脈沖信號觸發(fā)單元控制，形成高壓脈沖，經(jīng)限流電阻到輸出端子“HV”形成高壓脈沖施加于測試輸出端子的試品上放電產(chǎn)生衰減振蕩波。經(jīng)取樣電路送到CRT，由CRT自動同步跟蹤，使訊號波形得到清晰穩(wěn)定的顯示，通過觀察沖擊波形與存儲沖擊波形的重合與否判別繞組匝間絕緣性能。</p><p style="margin: 0px 0px 0px 30.05pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><img alt="" data-bd-imgshare-binded="1" src="http://www.haiyingsh.com/UpLoadFile/20141127/3129acae-497a-4bde-a8e3-b8c6973371bb.jpg" style="border:0px; margin:0px; padding:0px" /></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><strong style="font-family:??????; font-size:16px; font-stretch:normal; line-height:30px">二、</strong><strong>繞組匝間沖擊電壓試驗儀</strong><strong style="font-family:??????; font-size:16px; font-stretch:normal; line-height:30px">使用方法</strong></p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">1. 在使用時帶有高壓電，測試時要特別注意安全，機架必須可靠接好地線，在接通電源前，請仔細閱讀技術(shù)說明書，以有利于正確安全操作。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">2. 使用前檢查一下電源電壓是否220V±5%，配置5KVA的交流穩(wěn)壓電源，并檢查是否良好的接地裝置，連接好腳踏開關(guān)。把被測的試品準(zhǔn)備好，將儀器測試線連接被測的試品，將測試儀器電源線插頭接入220V電源，“降壓”控制器調(diào)到0V。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">3. 將測試儀帶鎖電源開關(guān)打在“通”的位置，即接通電源，此時電源綠色指示燈亮，顯示器有掃描線顯示或顯示一個亮點。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">4. 調(diào)節(jié)顯示器“垂直位移”和“水平位移”，使掃描線在顯示屏的中間，調(diào)節(jié)“輝度”、“聚焦”控制器，使掃描線成為zui細潔、清晰的基線。具體使用請詳閱示波器說明書。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">5. 先按下“自校”自鎖按鈕，相應(yīng)指示燈亮，然后按下“高壓按”并踩下腳踏開關(guān)，即高壓輸出，然后調(diào)節(jié)“升壓”按鈕，使峰值電壓表上顯示如1Kv，此時，把V/div放在0.5V/div檔，顯示器的μs/div放在20ms/div一檔，應(yīng)有顯示，則測試儀工作正常。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">6. 三相電機測試選擇，將儀器高壓輸出端子接到電機的一相繞組上，按下“高壓按”并踩下腳踏開關(guān)，接通高壓輸出，調(diào)節(jié)“升壓”控制器；使峰值表上指示所需施加沖擊波幅值，此時選擇合適的“V/div”和“μs/div”檔極，必要時再調(diào)節(jié)“掃速微調(diào)”，使觀察的沖擊波衰減振蕩波形zui易判別差異，將觀察的沖擊波衰減振蕩波形存入示波器，定為標(biāo)準(zhǔn)波形，然后松開按鈕，再依次連接到另外兩個繞組上，重復(fù)如上試驗，如果試驗兩次波形都基本重合即為合格，如不重合，即所對應(yīng)的那一相繞組出現(xiàn)故障。</p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">（注：“高壓按”在每一次輸出時，正常情況為1—3秒；如需仔細觀察，一般不宜超過10秒。）</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">7. 斷開“高壓按”和松開腳踏開關(guān)，將測試品取下按到下一臺待測電機，進行第二臺電機試驗，以此類推。</p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">注：試驗不同規(guī)格的電機，需調(diào)節(jié)示波器“LEVEL”，調(diào)節(jié)觸發(fā)電源，保證波形顯示穩(wěn)定。</p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><strong style="font-family:??????; font-size:16px; font-stretch:normal; line-height:30px">三、</strong><strong>繞組匝間沖擊電壓試驗儀</strong><strong style="font-family:??????; font-size:16px; font-stretch:normal; line-height:30px">測試注意事項</strong></p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">1. 測試時儀器的測試端有高壓，測試時要注意安全。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">2. 測試時，嚴(yán)禁帶電轉(zhuǎn)換，輸出選擇開關(guān)和“V/div”按鍵開關(guān)以避免損傷選擇開關(guān)和顯示器其它電器元件，以保證測試儀長期使用。若測試時需轉(zhuǎn)換開關(guān)的檔級，須斷開“高壓按鈕開關(guān)”，再進行轉(zhuǎn)換。</p><p style="margin: 0px 0px 0px 18pt; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;">3. 軸流風(fēng)機應(yīng)經(jīng)常保持清潔，測試完畢后防塵罩遮蓋好，防止灰塵、潮氣侵入。</p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-1787970.html">攜帶型短路接地線的一些使用建議</a></p> <p>下一篇：<a href="/Article-1787962.html">工頻試驗裝置開關(guān)柜電纜交流耐壓試驗結(jié)構(gòu)</a></p> </div> <div id="iqaqewgi6e" class="clear"></div> </div> 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