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onblur="if(this.value=='')this.value='請輸入您要查詢的產(chǎn)品'" onfocus="this.value=''" value="請輸入您要查詢的產(chǎn)品" type="text" class="search-txt"> <input name="" type="submit" class="search-btn" value=""> </form> </div> <div id="f55nvtnxj1n" class="clear"></div> </div> </div> <div id="f55nvtnxj1n" class="nybanner"><img src="/skins/106676/images/nybanner.jpg"></div> <script src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="f55nvtnxj1n" class="ncontent w_1100"> <div id="f55nvtnxj1n" 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> > 防雷元件測試儀的使用說明</span></div>  <div id="f55nvtnxj1n" class="n-3 c-news"> <div id="f55nvtnxj1n" class="newsnr"> <h1>防雷元件測試儀的使用說明</h1> <p class="source"><span>日期：2020-05-21</span><span>瀏覽：859次</span></p> <div> <p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"><span style="border:0px; font:inherit; margin:0px; padding:0px"> 防雷元件測試儀</span>適用于氧化鋅避雷器(壓敏電阻)，金屬陶瓷二、三電極放電管、真空避等過壓防護元件直流參數(shù)的測試。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">一、性能特點</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> a.適用于氧化鋅避雷器(壓敏電阻),金屬陶瓷二、三電極放電管、真空避管等過壓防護元件直流參數(shù)的測量。也可作穩(wěn)壓、恒流電源, 使用于其它方面。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> b.具有高壓短路保護、過流保護、高壓預(yù)置、量程調(diào)節(jié)等功能,高壓自泄放時間小于0.5秒。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> c.具有自檢功能。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> d.測量數(shù)據(jù)由3 1/2 LCD數(shù)字顯示,準(zhǔn)確度高、可靠性好。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> e.測量時,可以預(yù)先設(shè)定量程,并在測量過程中對超量程測試發(fā)出聲響提示, 適用于器件分組和檢驗判別。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> f.選擇連續(xù)測量,可以對批量試品進行不間斷測試。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> g.面板功能簡單,易于操作。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> h.重量輕,便于攜帶。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">二、使用方法</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">2.1 電源</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 本機背面板設(shè)有外接交流電源三芯插座?？山尤?20V，50Hz交流電網(wǎng)電源。附件備有交流電源線。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 本機還設(shè)有外接直流電源12V/0.5A輸入插孔,芯線為“+”極。用戶自備電源線時應(yīng)注意極性及線徑。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">2.2 準(zhǔn)備</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.2.1 將儀器面板上的自鎖按鍵開關(guān)全部置高位，調(diào)節(jié)旋鈕逆時針方向旋到盡頭（?。⒈緳C所備測試線分別插入面板“+”“—”測試孔。將外部電源接入背板相應(yīng)電源插座（孔）。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.2.2 打開電源開關(guān),儀器顯示器應(yīng)顯示“000”。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">2.3 測試</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.1 壓敏電阻測試</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.1.1量程設(shè)置</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> “壓敏電阻/放電管”選擇開關(guān)置高位(壓敏電阻),“單次/連續(xù)”開關(guān)置高位（單次），調(diào)節(jié)“電壓預(yù)制”旋鈕順時針方向旋到盡頭（大）。點擊高壓鍵開啟高壓，高壓指示燈亮，顯示器顯示測試電壓量程的上限值。調(diào)節(jié)“高壓限制”旋鈕至你所需的值(測試范圍上限值)。調(diào)節(jié)“電壓預(yù)置”旋鈕選擇你所需（作測試范圍下限值判定用）的值。此時，實際的測試范圍為0V～設(shè)定的量程上限值。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.1.2 測量</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> a）將被測壓敏電阻接入測量線，點擊“高壓啟停”鍵，高壓指示燈點亮,顯示器立刻顯示起始動作電壓U1mA測試值，數(shù)值后面的單位為“V”，按“測試”鍵,約2秒后自動轉(zhuǎn)為漏流I0.75U1mA測試值，數(shù)值后面的單位為“μA”，綠色指示燈隨漏流顯示同步點亮,持續(xù)約2秒后自行消失。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> b）被測壓敏電阻U1mA值低于電壓預(yù)置值時，接入后顯示器顯示的電壓預(yù)置值將跌至其U1mA值附近，可點擊“測試”鍵繼續(xù)下步測試；高于量程上限值時，測試過程U1mA時段顯示預(yù)設(shè)的量程上限值，此時測試電流＜1mA，顯示的測試數(shù)據(jù)無效。更換試品測量或再次測量，只須再次點擊“測試”鍵。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> c）如需連續(xù)測量，將“單次/連續(xù)”開關(guān)置低位（連續(xù)）即可。（在高壓開啟前選擇連續(xù)測量方式，須點擊一次“測試”鍵）。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.1.3 自檢及其它</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> a) 壓敏電阻測試1mA值的檢查</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 選擇“壓敏電阻”測試，開啟高壓，預(yù)置電壓調(diào)節(jié)至10V以上，短接測試孔“+”“—”端，顯示器應(yīng)顯示“000V”，按?。ú环牛?ldquo;顯示轉(zhuǎn)換”鍵，應(yīng)顯示“1000μA”。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> b) 壓敏電阻測試0.75U1mA值的檢查</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 測試端開路,點擊測試鍵進行測試時,顯示器應(yīng)顯示量程上限值,紅燈亮?xí)r段按住“顯示轉(zhuǎn)換”鍵應(yīng)顯示量程上限值的0.75倍。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> c) 在測試試品的過程中，按?。ú环牛?ldquo;顯示轉(zhuǎn)換”鍵：在U1mA測量時段顯示的是測試條件1mA（1000μA）的值；在I0.75U1mA測量時段顯示的是測試條件0.75U1mA的值。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 其它，利用電壓預(yù)置和量程調(diào)節(jié)功能可作1999V/1mA直流穩(wěn)壓源和1mA恒流源（負載電流達1mA時儀器恒定輸出1mA測試電流）使用，配合使用“顯示轉(zhuǎn)換”鍵，可測量負載電壓、電流（V/I特性）值。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.2 放電管測試</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.2.1 量程設(shè)置</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> “壓敏電阻/放電管”選擇開關(guān)置低位（放電管），按4.3.1.1的方法設(shè)置量程。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.3.2.2 測量</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> a) 將被測放電管接入測試線：</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 若綠色指示燈點亮，則表示被測試品點火電壓值Vsdc小于 “電壓預(yù)置”值（超量程下限），蜂鳴器鳴叫發(fā)出聲響提示。此時，應(yīng)及時撤下被測試品，否則將被反復(fù)點火。若綠色指示燈沒有點亮，則表示被測試品點火電壓Vsdc值大于“電壓預(yù)置”值。可點擊“測試鍵”繼續(xù)下步操作。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> b) 點擊“測試”鍵后，測試電壓以100V/S的速率從電壓預(yù)置值開始上升。至綠色指示燈點亮后：若蜂鳴器不鳴叫，顯示器將顯示測量范圍內(nèi)的數(shù)值。若蜂鳴器鳴叫，顯示器將顯示測量范圍的上限值。此時，表示被測試品的點火電壓Vsdc值大于測量范圍的上限值（超量程上限）而沒有點火。綠色指示燈點亮和同步產(chǎn)生的顯示值（超量程范圍時有鳴叫聲）持續(xù)時間約2秒自行消失，隨之回復(fù)到預(yù)置狀態(tài)。綠色指示燈點亮期間撤下已測放電管，預(yù)置電壓恢復(fù)后再接入待測放電管進行下一次測試。<br /> c) 連續(xù)測量,將“單次/連續(xù)”開關(guān)置低位（連續(xù)位），便可連續(xù)測量。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 2.4 測試完畢,點擊“高壓”鍵關(guān)閉測試電壓,將背面板電源開關(guān)置”OFF”位關(guān)閉電源。使用外接DC 12V直流電源時應(yīng)將電源線撤除。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;">三、注意事項及說明</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.1 本機設(shè)置了量程(測試范圍)調(diào)節(jié)功能。在使用中，即可盡可能降低測試電壓以降低能耗,延長儀器壽命,減小安全危害。又可減少測試時間，提高工效。并可用來分組篩選，檢驗判別。用戶可充分合理利用這一功能。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 預(yù)置電壓調(diào)節(jié)范圍： 0V ～ 1800V</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 量程電壓調(diào)節(jié)范圍： 100V ～ 1999V</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 量程設(shè)置或測試值超過1999V,顯示器顯示溢出信號“1”。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 注：實際輸出1700V。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.2 放電管測試的預(yù)置電壓值就是100V/S速率上升電壓的起始值,也是測試范圍的下限值。壓敏電阻測試的預(yù)置電壓只作量程下限值用于判定,實際的測試范圍下限值始終從0V起始。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.3 預(yù)置電壓設(shè)置應(yīng)低于量程上限電壓。否則，測試電壓將處于量程（上限值）限制控制狀態(tài)。在放電管測試時，綠燈將被反復(fù)點亮，并伴有超量程聲響提示。此時，將預(yù)置電壓降低即可將高壓置于預(yù)置狀態(tài)。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.4 本機測試電壓可高達1700V,應(yīng)保持面板、測試線及工作臺面的清潔與干燥,以免因泄露電流、電弧、電暈而引起測試出錯。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.5 必須采用二相三線電源插座,地線應(yīng)完好接地。</font></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><font style="margin: 0px; padding: 0px;"> 3.6 操作人員應(yīng)采取必要的高壓防護措施,以免高壓電擊傷人。</font></p> <div id="f55nvtnxj1n" class="clear"></div> </div> <div id="f55nvtnxj1n" 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