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src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="661161111" class="ncontent w_1100"> <div id="661161111" 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> > 沖擊電壓試驗儀使用前操作及注意事項</span></div>  <div id="661161111" class="n-3 c-news"> <div id="661161111" class="newsnr"> <h1>沖擊電壓試驗儀使用前操作及注意事項</h1> <p class="source"><span>日期：2024-01-04</span><span>瀏覽：392次</span></p> <div> <p style="line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;font-size: 16px"><span style="font-family:宋體">沖擊電壓試驗儀使用前操作及注意事項：</span></span></strong><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">電源線與電網(wǎng)連接，如果不能確認供電系統(tǒng)地線的有效性，請使用接地線與儀器后面板的接地端子相連。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">先不要接儀器前端的測試線，將電壓調(diào)節(jié)旋鈕調(diào)到最左端，打開電源開關(guān)。</span></span><strong></strong></p><p style="line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;font-size: 16px"><span style="font-family:宋體">5.2 設(shè)置菜單</span></span></strong><strong></strong></p><p style="text-indent:32px;line-height:150%"><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下設(shè)置鍵，進入系統(tǒng)設(shè)置狀態(tài)。系統(tǒng)共有兩屏，第一屏有設(shè)置峰值、沖擊次數(shù)、間隔時間、極性</span><span style="font-family:宋體">4個設(shè)置參數(shù)，第二屏有工作模式、報警電流、衰減判定3個設(shè)置參數(shù)。設(shè)置參數(shù)的切換由設(shè)置鍵操作，設(shè)置參數(shù)通過上、下鍵修改，設(shè)置峰值可以通過啟動鍵換位為萬位、千位、百位、十位、個位，沖擊次數(shù)和報警電流可以通過啟動鍵換位為千位、百位、十位、個位，按下7次設(shè)置鍵，系統(tǒng)保存參數(shù)設(shè)置并退出系統(tǒng)設(shè)置。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">設(shè)置峰值：自動模式下的沖擊輸出峰值由此設(shè)置，可設(shè)置范圍為</span><span style="font-family:宋體">4KV-20KV，以1V為步進。通過啟動鍵移位，通過上、下鍵修改數(shù)據(jù)。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">沖擊次數(shù)：手動模式、自動模式下的沖擊輸出次數(shù)由此設(shè)置，</span><span style="font-family:宋體">0為無限次沖擊，</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">間隔時間：手動模式、自動模式下的間隔時間設(shè)置，默認參數(shù)為</span><span style="font-family:宋體">5S。自動模式的控制參數(shù)是基于5秒狀態(tài)下調(diào)試的，5秒和5秒以上因系統(tǒng)設(shè)計有自動恒壓系統(tǒng)，輸出峰值不受間隔時間影響。間隔時間低于5秒的，可能部分設(shè)置值達不到設(shè)置峰值；間隔時間低于5秒但在3秒及以上時，可輸出大部分設(shè)置電壓峰值。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">極性：沖擊電壓輸出極性，有正、負、正負交替三個選擇項。極性設(shè)置對手動沖擊、直流輸出、自動輸出均有效。正負交替對直流無效。正負交替模式時，沖擊次數(shù)不要設(shè)置為</span><span style="font-family:宋體">0。極性設(shè)置為正負交替，儀器實際上進行的是兩組測試，一組為正，一組為負，各組測試次數(shù)按沖擊次數(shù)設(shè)置。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">工作模式：共有手動、直流、自動、程控</span><span style="font-family:宋體">4種模式。手動模式?jīng)_擊電壓峰值由前端的旋鈕調(diào)節(jié)，左端為最小，右端為最大；直流模式輸出高壓直流，電壓由前端的旋鈕調(diào)節(jié)，可用于部分低功率的直流輸出，主要用于儀器檢修。自動模式根據(jù)設(shè)置的程控電壓和間隔時間輸出沖擊電壓。程控模式為后繼擴展保留的計算機程控模式。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">報警電流：可設(shè)置范圍為</span><span style="font-family:宋體">0.03A-1.2A。用于判定沖擊測試時樣品是否擊穿。判定樣品擊穿，沖擊電流為必需條件，在檢測到?jīng)_擊電流的基礎(chǔ)上，才會根據(jù)衰減判定的設(shè)置判定。如未檢測到?jīng)_擊電流，或者沖擊電流值低于報警電流設(shè)置值，則樣品判定未擊穿。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">衰減判定：可設(shè)置范圍為</span><span style="font-family:宋體">0-99，對應(yīng)沖擊測試時因樣品擊穿導(dǎo)致的電壓衰減。用于判定樣品自否擊穿，如果設(shè)置為0，則儀器判定擊穿時僅根據(jù)是否產(chǎn)生沖擊電流；如果設(shè)置為1-99，則只有在檢測到?jīng)_擊電流并產(chǎn)生電壓衰減的狀況時，儀器才判定擊穿。如設(shè)置為10，則代表儀器檢測到的沖擊電壓值為應(yīng)檢測沖擊電壓值的90%，代表衰減了10%。</span></span><strong></strong></p><p style="line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;font-size: 16px"><span style="font-family:宋體">5.3 直流電壓輸出：</span></span></strong></p><p style="text-indent:28px;line-height:150%"><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下設(shè)置鍵，進入?yún)?shù)設(shè)置界面，通過上、下鍵修改參數(shù)，通過設(shè)置鍵切換設(shè)置項，設(shè)置工作模式為直流，根據(jù)需要設(shè)置極性。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">首先確認儀器前端電壓調(diào)節(jié)旋鈕處于最左側(cè)位置。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">將高壓輸出線插入直流輸出口，低壓輸出線接</span><span style="font-family:宋體">GND并旋緊。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">將高壓輸入線和低壓輸出線接入負載。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下啟動鍵，進入直流高壓輸出狀態(tài)。通過電壓調(diào)節(jié)旋鈕調(diào)節(jié)輸出電壓。調(diào)節(jié)時注意節(jié)奏，顯示電壓值需要穩(wěn)定過程。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-weight:bold;font-size:14px">? </span><strong><span style="font-family: 宋體;line-height: 150%;font-size: 14px"><span style="font-family:宋體">直流輸出為輔助功能，僅用于需要小功率的直流高壓電源輸出，主要用于儀器檢修。如果調(diào)節(jié)時高壓無法升上去，則負載電阻過小。直流高壓輸出接于主高壓發(fā)生器儲能電容極，不要在過小電阻狀態(tài)下長時間工作。</span></span></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-weight:bold;font-size:14px">? </span><strong><span style="font-family: 宋體;line-height: 150%;font-size: 14px"><span style="font-family:宋體">使用完成后，需先將電壓調(diào)節(jié)旋鈕調(diào)節(jié)到最左側(cè)位置，并等待電壓緩慢下降，等電壓下降到</span><span style="font-family:Times New Roman">10KV</span><span style="font-family:宋體">以下后，按下儀器停止鍵。</span></span></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">取下測試件上的高壓測試線及測試地線，取下時盡量不要接觸帶電部位，并將高壓測試線和地線相夾。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">拔出高壓測試線及測試地線。</span></span><strong></strong></p><p style="line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;font-size: 16px"><span style="font-family:宋體">5.4 手動沖擊電壓測試：</span></span></strong><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下設(shè)置鍵，進入?yún)?shù)設(shè)置界面，再次按下設(shè)置鍵，通過上、下鍵設(shè)置沖擊次數(shù)為</span><span style="font-family:宋體">0（無限次連續(xù)沖擊）（如果需設(shè)置次數(shù)較多，可通過啟動鍵換位）；再次按下設(shè)置鍵，通過上、下鍵設(shè)置間隔時間（黙認間隔時間為5S）；再次按下設(shè)置鍵，通過下、鍵設(shè)置輸出極性；再次按下設(shè)置鍵，通過上、下鍵設(shè)置工作模式為手動；再次按下設(shè)置鍵，通過上、下鍵設(shè)置報警電流（可通過啟動鍵換位）；再次按下設(shè)置鍵，通過上、下鍵設(shè)置衰減判定；再次按下設(shè)置鍵，系統(tǒng)退出參數(shù)設(shè)置并保存設(shè)置的參數(shù)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">先不接測試線，按下啟動鍵，進入沖擊電壓測試狀態(tài)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">調(diào)節(jié)電壓調(diào)節(jié)旋鈕，觀察系統(tǒng)顯示的沖擊電壓值</span><span style="font-family:宋體">(一般調(diào)節(jié)電位器后的二到三次沖擊才會體現(xiàn)出當(dāng)前調(diào)節(jié)值)，調(diào)節(jié)沖擊電壓輸出至預(yù)測試電壓值（測試電壓值一般不低于標(biāo)準(zhǔn)值即可）。如果極性設(shè)置為交替，只需將正極性沖擊輸入調(diào)節(jié)到預(yù)測試電壓值即可。按下設(shè)置鍵，等待儀器返回初始狀態(tài)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">將高壓測試線一端接入儀器前端沖擊輸出接口。另一端接入預(yù)測試件測試位置。將測試地線一端接入儀器前端接地接口，另一端接入預(yù)測試件接地位置。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">根據(jù)需要設(shè)置沖擊次數(shù)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下啟動鍵，進入沖擊測試狀態(tài)。儀器按照預(yù)設(shè)置的沖擊次數(shù)測試完成后，系統(tǒng)會自動放電，然后返回到初始狀態(tài)。如果在測試過程中需要緊急終止試驗，可隨時按下停止鍵。如果需停止當(dāng)前測試，亦可按下設(shè)置鍵，等待儀器將最近一次沖擊輸出后返回初始狀態(tài)。如果設(shè)置的沖擊次數(shù)為</span><span style="font-family:宋體">0，試驗為一直進行，只有按下停止鍵或者設(shè)置鍵方能停止。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">如果測試時測試樣品擊穿，儀器會檢測到?jīng)_擊電流，并根據(jù)檢測到?jīng)_擊電流大小和電壓衰減判定的值綜合判定是否合格，擊穿時一般伴隨打火現(xiàn)象（如果擊穿電流較小，可能導(dǎo)致火花較弱而不能直接觀察到）。如果使用示波器跟蹤沖擊波形，會看到?jīng)_擊截波或者因擊穿導(dǎo)致的波形崎變，一般體現(xiàn)在半峰寬變得非常窄，并快速下降。當(dāng)測試樣品發(fā)生擊穿，儀器會停止當(dāng)前試驗并顯示測試不合格，按下設(shè)置鍵儀器返回初始狀態(tài)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">對于單一樣品或者重復(fù)樣品進行測試時，當(dāng)前測試完成后，可直接更換樣品，更換樣品后，可直接按下啟動鍵，儀器自動按上一測試過程進行重復(fù)測試。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">對于沖擊測試點之間接有電路的，或者測試點之間接有防雷元件（過壓抑制器）的，在沖擊測試時會因負載電路導(dǎo)致沖擊電流或者因防雷元件導(dǎo)致沖擊電壓下降。對于此類電路，測試前應(yīng)斷開電路；或者不根據(jù)沖擊電流判定是否合格，而是根據(jù)沖擊測試后，電路是否能正常工作判定沖擊測試是否合格；測試時應(yīng)將報警電流設(shè)置為最大值，如果需要根據(jù)報警電流判斷是否合格，需合理設(shè)置報警電流。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">關(guān)閉電源。調(diào)節(jié)電壓調(diào)節(jié)旋鈕到最左端位置。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">取下測試件上的高壓測試線及測試地線，取下時盡量不要接觸帶電部位，并將高壓測試線和地線相夾。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">拔出高壓測試線及測試地線。</span></span><strong></strong></p><p style="line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;font-size: 16px"><span style="font-family:宋體">5.5 自動沖擊電壓測試：</span></span></strong><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下設(shè)置鍵，進入?yún)?shù)設(shè)置界面，通過上、下鍵和啟動鍵配合設(shè)置沖擊峰值，啟動鍵進行移位，上、下鍵修改數(shù)據(jù)；再次按下設(shè)置鍵，根據(jù)需要通過上、下鍵設(shè)置沖擊次數(shù)（</span><span style="font-family:宋體">0為無限次連續(xù)沖擊）（如需要可通過啟動鍵換位，配合上下鍵修改）；再次按下設(shè)置鍵，根據(jù)需要通過上、下鍵設(shè)置間隔時間（默認間隔時間為5S）；再次按下設(shè)置鍵，根據(jù)需要通過上、下鍵設(shè)置極性；再次按下設(shè)置鍵，通過上、下鍵設(shè)置工作模式為自動；再按下一次設(shè)置鍵，通過啟動鍵換位，通過上下鍵修改報警電流設(shè)置參數(shù)。再按下一次設(shè)置鍵，通過上下鍵修改衰減判定設(shè)置參數(shù)。再按下一次設(shè)置鍵，系統(tǒng)退出參數(shù)設(shè)置并保存設(shè)置參數(shù)。</span></span></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">將測試地線一端接入儀器前端接地接口，另一端接入預(yù)測試件接地位置。將高壓測試線一端接入儀器前端沖擊輸出接口。另一端接入預(yù)測試件測試位置。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">按下啟動鍵，進入沖擊測試狀態(tài)。儀器按照預(yù)設(shè)置的沖擊次數(shù)測試完成后，系統(tǒng)會自動返回到初始狀態(tài)。如果在測試過程中需要緊急終止試驗，可隨時按下停止鍵。</span></span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">如果需停止當(dāng)前測試，亦可按下設(shè)置鍵，等待儀器將最近一次沖擊輸出后返回初始狀態(tài)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">如果測試時測試樣品擊穿，儀器會檢測到?jīng)_擊電流，并根據(jù)檢測到?jīng)_擊電流大小和電壓衰減判定的值綜合判定是否合格，擊穿時一般伴隨打火現(xiàn)象（如果擊穿電流較小，可能導(dǎo)致火花較弱而不能直接觀察到）。如果使用示波器跟蹤沖擊波形，會看到?jīng)_擊截波或者因擊穿導(dǎo)致的波形崎變，一般體現(xiàn)在半峰寬變得非常窄，并快速下降。當(dāng)測試樣品發(fā)生擊穿，儀器會停止當(dāng)前試驗并顯示測試不合格，按下設(shè)置鍵儀器返回初始狀態(tài)。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">對于單一樣品或者重復(fù)樣品進行測試時，當(dāng)前測試完成后，可直接更換樣品，更換樣品后，可直接按下啟動鍵，儀器自動按上一測試過程進行重復(fù)測試。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">對于沖擊測試點之間接有電路的，或者測試點之間接有防雷元件（過壓抑制器）的，在沖擊測試時會因負載電路導(dǎo)致沖擊電流或者因防雷元件導(dǎo)致沖擊電壓下降。對于此類電路，測試前應(yīng)斷開電路；或者不根據(jù)沖擊電流判定是否合格，而是根據(jù)沖擊測試后，電路是否能正常工作判定沖擊測試是否合格；測試時應(yīng)將報警電流設(shè)置為最大值，如果需要根據(jù)報警電流判斷是否合格，需合理設(shè)置報警電流。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span style=";font-family:宋體;line-height:150%;font-size:14px"><span style="font-family:宋體">關(guān)閉電源。取下測試件上的高壓測試線及測試地線，取下時盡量不要接觸帶電部位，并將高壓測試線和地線相夾。</span></span><strong></strong></p><p style="margin-left:28px;line-height:150%"><span style="font-family:Wingdings;font-size:14px">? </span><span 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