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style="margin-left:-0.1pt; text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">ST2677超高壓耐壓測試儀使用說明</span></span></strong></p><p style="text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">一、概述</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">ST267</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">6/ST2677型自動耐壓測試儀是<strong><a >交直流高壓安全測量儀器</a></strong>，廣泛用于電子儀器、電子設(shè)備、電子元器件、電工器材、膠木電器、橡膠、高壓電纜和電機等耐壓測試，也適用于家用電器的耐壓測試。</span></span></p><p style="text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">二、主要技術(shù)條件</span></span></strong></p><table style="border-collapse:collapse; border:1px dotted rgb(211, 211, 211); color:rgb(51, 51, 51); font-family:sans-serif,arial,verdana,trebuchet ms; font-size:13px; margin-left:5.4pt; width:648px"><tbody><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體"> 型號</span></span></strong></p><p><strong><span style="font-size:9pt"><span style="font-family:黑體">參數(shù)</span></span></strong></p></td><td style="width:276px"><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">ST2676</span></span></strong></p></td><td style="width:276px"><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">ST2677</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">測試電壓</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC/DC 0～30（kV）</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC/DC 0～50（kV）</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">電壓精度</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">10kV～30kV</span></span></strong><strong><span style="font-size:9pt"><span style="font-family:黑體">±</span></span></strong><strong><span style="font-size:9pt"><span style="font-family:黑體">5%</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">10kV～50kV</span></span></strong><strong><span style="font-size:9pt"><span style="font-family:黑體">±</span></span></strong><strong><span style="font-size:9pt"><span style="font-family:黑體">5%</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">漏電流范圍</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC 0～20（mA） DC 0～10（mA）</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC/DC 0～10（mA）</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">漏電流誤差</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC 0.2～20（mA）±5% DC 0.2～10（mA）±5%</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC/DC 0.2～10（mA）±5%</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">輸出波形</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">50Hz正弦波形或直流</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">時間控制</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">數(shù)顯 1～99（s）±5% 手控∞ 任意預(yù)置</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">輸出功率</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">600VA</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">500VA</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">顯示方式</span></span></strong></p></td><td colspan="2" style="vertical-align:top; width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">全數(shù)顯</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">測試判別</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">合格/不合格不合格聲光報警</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">環(huán)境要求</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">相對濕度：≤75%RH 環(huán)境溫度： 0～40℃</span></span></strong></p><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">周圍無強力電磁場干擾源；無大量灰塵和腐蝕性氣體；通風(fēng)良好</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">靜態(tài)功耗</span></span></strong></p></td><td colspan="2" style="vertical-align:top; width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">＜50VA</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">重量</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">約35kg</span></span></strong></p></td><td style="width:276px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">約55kg</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">體積</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">主機：350×280×150 變壓器：620×370×750</span></span></strong></p></td></tr><tr><td style="width:96px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">電源</span></span></strong></p></td><td colspan="2" style="width:552px"><p style="text-align:center"><strong><span style="font-size:9pt"><span style="font-family:黑體">AC 220V±10% 50Hz±5%</span></span></strong></p></td></tr></tbody></table><p style="text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">三、工作原理</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">ST267</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">6</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">/ST</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2677</span></span><span style="font-size:10.5pt"><span style="font-family:宋體"><strong><a >自動耐壓測試儀</a></strong>，是<strong><a >自動升壓測試儀器</a></strong>，其輸出電壓、定時時間、漏電流根據(jù)需要進行預(yù)置（電壓預(yù)置后恢復(fù)），然后啟動，當輸出電壓達到預(yù)置電壓，按定時啟動按鈕，數(shù)字定時器根據(jù)預(yù)置的時間開始計數(shù)，定時時間到達后，高壓變壓器電源切斷，調(diào)壓器自動回零。當被測件不合格發(fā)生報警時，高壓變壓器電源自動切斷，調(diào)壓器也自動回零。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">1．工作原理方框圖：</span></span></strong>　</p><p> <img alt="" src="http://img55.chem17.com/9/20171018/636439131294411722461.png" style="height:171px; width:676px" /></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體"> 圖(1):超高壓耐壓儀</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">工作原理方框圖</span></span></strong></p><p><br /><strong><span style="font-size:10.5pt"><span style="font-family:黑體">2．框圖各部分描述：</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">⑴ 繼電器Q1：Q1的作用是控制輸出電壓的接通或切斷。繼電器的釋放與吸合由控制器控制。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">⑵ 電壓調(diào)節(jié)器：用帶電機的1</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">.5k</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">V</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">A</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">調(diào)壓變壓器改變電壓。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">⑶ 高壓變壓器：按照比率升高電壓調(diào)節(jié)器的輸出電壓，而得到高壓。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">⑷ 電流檢測器：這部分由檢出電流轉(zhuǎn)換成電壓，然后再與參考電壓相比較而成。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">⑸ 控制器：控制器由NE556驅(qū)動繼電器Q1、Q2。</span></span></p><p style="margin-left:26.95pt"><span style="font-size:10.5pt"><span style="font-family:宋體">⑹ 定時器：本定時器是數(shù)字定時，由CD4060振蕩及分頻為IS的信號，一路信號送可逆計數(shù)器作定時預(yù)置，一路信號通過控制器作定時計數(shù)，當測試電壓達到預(yù)置電壓后，按定時啟動鈕定時器開始計數(shù)，并與定時預(yù)置時間比較，相同后輸出電平，使控制電路斷開高壓輸出，從而達到定時的目的。</span></span></p><p style="margin-left:26.95pt"><span style="font-size:10.5pt"><span style="font-family:宋體">⑺ 報警：在測試過程中，泄漏電流超過所設(shè)定的漏電流預(yù)置后，由驅(qū)動塊NE556推動蜂鳴器及超漏燈發(fā)出聲光報警，同時自動切斷高壓。</span></span></p><p style="margin-left:26.95pt"><span style="font-size:10.5pt"><span style="font-family:宋體">⑻ 比較控制器：比較控制器由預(yù)置的參考電壓與被自動上升的高壓進行比較而控制電機，使調(diào)壓變壓器升壓或降壓。</span></span></p><p style="margin-left:26.95pt"><span style="font-size:10.5pt"><span style="font-family:宋體">⑼ 電壓預(yù)置：電壓預(yù)置是先將所需要測試電壓進行預(yù)置，即按下預(yù)置開關(guān)，旋動“調(diào)節(jié)”旋鈕使電壓表指示所需要測試電壓將預(yù)置開關(guān)恢復(fù)，按啟動開關(guān)，電壓表即顯示自動上升的電壓，此電壓就是所要的測試電壓，測試完畢后，按復(fù)位鈕，調(diào)壓器自動為零。</span></span></p><p style="margin-left:17.85pt; text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">四、儀器面板結(jié)構(gòu)及說明</span></span></strong></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">1．ST2676/ST2677系列超高壓耐壓測試儀面板結(jié)構(gòu)見圖（2）和圖（3）所示:</span></span></strong></p><p> <img alt="" src="http://img56.chem17.com/9/20171018/636439131877072746353.png" style="height:256px; width:546px" /></p><p style="text-align:center"><strong><span style="font-size:10.5pt"><span style="font-family:黑體">圖（2）全數(shù)顯超高壓耐壓儀前面板示意圖</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">1</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“電源”開關(guān)：在打開此開關(guān)前，一定要看“使用注意事項”及“使用方法”。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“啟動”按鈕：當儀器不處于“超漏”狀態(tài)時，按此按鈕后，“測試”燈即點亮，電壓升至預(yù)置值。</span></span></p><p style="margin-left:35.85pt"><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">3</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“復(fù)位”按鈕：耐壓測試結(jié)束后，按此鈕，使輸出電壓復(fù)位（即斷開電）。當超漏報警時，按此鈕可清除報警。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">4</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“預(yù)置</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">/</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">測量”按鈕：切換</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">、</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">kV</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">顯示值為預(yù)置值或測量值。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">5</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">”按鍵：漏電流測量檔位鍵，用于選擇電流測量范圍</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">0</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">～</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">(</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">)。</span></span></p><p style="margin-left:35.85pt"><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">6</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">20mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">”按鍵：漏電流測量檔位鍵，在</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">mA～</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">20mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">內(nèi)任意選擇。其中</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">ST2677</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">為：“1</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">0mA</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">”按鍵，漏電流測量在</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">2</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">mA～10</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">m</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">A內(nèi)任意選擇。</span></span></p><p style="margin-left:35.85pt"><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">7</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“交/直轉(zhuǎn)換”按鍵：選擇</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">AC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">或</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">DC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">測試，按進為</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">DC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">測試，彈出為</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">AC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">測試，不可同時進行</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">AC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">或</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">DC</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">測試。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">8</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）顯示屏：用于顯示定時時間、漏電流值和電壓值。</span></span></p><p style="margin-left:35.85pt"><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">9</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“測試”燈：此燈亮表示高壓送到輸出端。燈滅即高壓斷開，但斷開后電壓表顯示為“00</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">.</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">0”時，不等于高壓端沒有高壓輸出，在直流方式下進行測試時，測試完畢后必須放電。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">10</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“超漏”燈：被測物中電流大于漏電流所預(yù)置值時，此燈會亮。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">11</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“電流調(diào)節(jié)”旋紐：用來調(diào)節(jié)漏電流上限預(yù)置值。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">12</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“電壓調(diào)節(jié)”旋紐：用于預(yù)置測試時所用的電壓。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">13</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）“定時啟動”按鈕：用于定時啟動。</span></span></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">14</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">）定時器：用于設(shè)置測試電壓的輸出連續(xù)時間，可在1～</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">99(s)</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">內(nèi)任選。</span></span></p><p style="margin-left:21pt"> <img alt="" src="http://img64.chem17.com/9/20171018/636439132459109768805.png" style="height:240px; width:525px" /></p><p style="text-align:center"><strong><span style="font-size:10.5pt"><span style="font-family:黑體">圖（3）全數(shù)顯超高壓耐壓儀后面板示意圖</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">1</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">5）“控制接口”：與高壓變壓器相連，用于控制高壓變壓器。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">1</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">6）“接地端”：接高壓變壓器接地端</span></span></strong><span style="font-size:10.5pt"><span style="font-family:宋體">.</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">1</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">7）“接地端”：儀器外殼應(yīng)可靠接地。</span></span></strong></p><p><span style="font-size:10.5pt"><span style="font-family:宋體">（</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">1</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">8）“電源插座”：輸入</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">AC220V</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">、</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">50Hz</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">電流，裝10</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">A</span></span><span style="font-size:10.5pt"><span style="font-family:宋體">保險絲一只。</span></span></p><p style="margin-left:17.8500pt; text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">五、使用前注意事項</span></span></strong></p><p> <strong><span style="font-size:10.5pt"><span style="font-family:黑體">使用須知：ST2676/</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">ST267</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">型耐壓測試儀設(shè)計時已充分考慮到安全問題。然而，因該儀器輸出能達30</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">kV/</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">2</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">0mA(ST2677</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">為50</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">kV/</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">2</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">0mA)</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">，如儀器使用不當，仍然可造成嚴重的安全事故。所以，在使用前一定要注意以下幾點：</span></span></strong></p><p><strong><span style="font-size:10pt"><span style="font-family:宋體">1．接通該儀器的電源、高壓變壓器接地端及儀器的接地鍛必須有可靠接地，若接地不好，儀器外殼會帶有高壓，可能會發(fā)生意外事故。</span></span></strong></p><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">2．測試儀與高壓發(fā)生器必須要保持2米以上距離.</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體"> 接好接線后，應(yīng)復(fù)查無誤后才可加壓。應(yīng)特別注意檢查高壓設(shè)備及引線與地、與操作人員安全距離，被試品的外殼是否可靠接地，要按安全規(guī)程中所規(guī)定的內(nèi)容進行試驗; 操作人員要培訓(xùn)后,才能上崗操作儀器.</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">3．儀器開機后，必須按一下復(fù)位鈕，否則可能出現(xiàn)直接啟動或報警。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">4．禁止高壓端與測試端直接短路。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">5．使用人員應(yīng)戴絕緣手套，穿絕緣鞋，腳下墊絕緣皮墊以防電擊。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:宋體">6．禁止在沒有關(guān)閉儀器電源的情況下連接被測物；禁止在加有測試電壓的情況下，將導(dǎo)線接到或斷開被測物體，并且也不要接觸被測物體及測試導(dǎo)線，在直流方式或交流測試容性負載下進行測試時，測試完畢切斷高壓關(guān)閉電源后，必須用放電棒放電。</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">要等到放電完畢后，才能進行下一步操作。否則，連接線上仍有高壓會造成安全事故。</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">7．儀器采用直流方式進行測試時，拔出交流導(dǎo)通棒，將變壓器高壓輸出端與電容高壓端相連。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">8．</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">在直流方式下測試時，測試完畢，按復(fù)位鈕，然后關(guān)閉電源。關(guān)閉電源后不能立即測另一被測物，雖然電壓顯示為“00</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">.</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">0”，但高壓電容仍有高壓，必須先放電，要等到放電完畢后，才能進行下一步操作。否則，連接線上仍有高壓會造成安全事故。</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">9．按啟動鈕后，電壓表不能立即升至預(yù)置電壓值，必須立即按復(fù)位按鈕。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">10．萬一發(fā)生緊急情況，應(yīng)立即切斷電源。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">11．“測試燈”燒壞，應(yīng)立即替換。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">12．當儀器停止使用或貯存時，請避免存放在直接光照、高溫、高濕或灰塵較多的地方。</span></span></p><p> </p><p style="margin-left:17.8500pt; text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">六、使用方法</span></span></strong></p><p style="margin-left:17.8500pt; text-align:center"> </p><p><span style="font-size:10.5000pt"><span style="font-family:黑體">1．在儀器使用之前，必須先將電壓調(diào)節(jié)旋鈕調(diào)到零位關(guān)閉電源，然后交流按照接線圖(4), 直流按照接線圖(5),進行連接安裝。</span></span></p><p> <img alt="" src="http://img63.chem17.com/9/20171018/636439134940450126449.png" style="height:406px; width:492px" /></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">圖（4） ST2677耐壓測試儀交流測試接線示意圖</span></span></strong></p><p><img alt="" src="http://img56.chem17.com/9/20171018/636439135882691781563.png" style="height:441px; width:500px" /></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體"> 圖（5） ST2677耐壓測試儀直流測試接線示意圖</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">a.交流方式下測試：將高壓電容與變壓器高壓輸出端的高壓連接線取下，將交流導(dǎo)通棒插緊；變壓器的接地端接被測物外殼或低端,變壓器的高壓輸出端接被測物的另一端(圖4).</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">b.直流方式下測試：將高壓電容的高壓端與變壓器高壓輸出端用高壓連接線連接，將交流導(dǎo)通棒拔出; 變壓器的接地端接被測物外殼或低端,變壓器的高壓輸出端接被測物的另一端.(圖5)</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">2</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">．全部安裝好后接通電源。</span></span></strong></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">3</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">．設(shè)定漏電流上限值：</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">選擇漏電流預(yù)置值，使之與被測物要求的漏電流上限值相對應(yīng)。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">4</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">．設(shè)定電壓值：</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">選擇符合被測物要求的電壓值進行預(yù)置。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">5．連接被測物：</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">關(guān)閉電源，在交流測試容性負載或直流方式下進行測試時，測試完畢切斷高壓關(guān)閉電源后，必須用放電棒放電。</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:宋體">要等到放電完畢后，才能進行下一步操作。否則，連接線上仍有高壓會造成安全事故。</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">在確定輸出電壓為零的情況下，將高壓變壓器接地的端連接被測物，然后將高壓變壓器的高壓輸出端的測試夾接到被測物。嚴禁在不放電的情況下連接被測物，否則會造成生命危險。 </span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">6</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">．“手控”測試：</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">a</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">.按下“啟動”按鈕，“測試”指示燈亮，電壓自動升為預(yù)置值，使測試電壓加到被測物上。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">b</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">.當測試完畢后，按下“復(fù)位”按鈕，切斷輸出電壓。</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:宋體">c.如果被測物內(nèi)流過的電流大于設(shè)定的漏電流值，儀器判斷被測物“超漏”就會自動切斷輸出電壓，并發(fā)出“超漏報警”，“超漏”指示燈亮，按下“復(fù)位”按鈕，即可清除報警信號。</span></span></p><p><strong><span style="font-size:10.5pt"><span style="font-family:黑體">7</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">．“定時”測試：</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">a</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">.按定時器，設(shè)置所需的測試時間。</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:宋體">b</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">.按下“啟動”按鈕，在電壓值升至預(yù)置值時，再按“定時啟動”按鈕，當定時器所定時間到了，測試電壓自動切斷，被測物通過了測試，則儀器不產(chǎn)生超漏報警信號。測試結(jié)束后,按下“復(fù)位”按鈕。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">c.如在測試過程中產(chǎn)生“超漏”信號，表示被測物沒有通過測試，按“復(fù)位”按鈕可清除報警信號。</span></span></p><p style="margin-left:21.0000pt; text-align:center"><strong><span style="font-size:14pt"><span style="font-family:黑體">七、放電棒的使用</span></span></strong></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 1.</span></span> <span style="font-size:10.5000pt"><span style="font-family:宋體">測試前先將放電棒的接地端與高壓變壓器的接地端相連。</span></span></p><p style="margin-left:26.9500pt"><span style="font-size:10.5000pt"><span style="font-family:宋體">2．</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">直流方式或交流測試容性負載下進行測試時，測試完畢切斷高壓關(guān)閉電源后，必須用放電棒放電。</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">關(guān)閉電源，用放電棒的放電頭（球形）慢慢接觸高壓端，接觸時間為30</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">s</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">。</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:宋體">3.</span></span> <span style="font-size:10.5000pt"><span style="font-family:宋體">然后將放電棒的接地端與高壓端相碰使之接觸良好，相碰時間為10</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">s</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">。</span></span></p><p style="margin-left:21.0000pt"><strong><span style="font-size:12pt"><span style="font-family:黑體">注意：</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">在放電時放電棒的接地端、接地線與高壓端的距離應(yīng)從大于</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">0.5</span></span></strong><strong><span style="font-size:10.5pt"><span style="font-family:黑體">米處慢慢靠近高壓端。</span></span></strong></p></div> <div id="nxnzvbt5" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-1377632.html">ETCR3000數(shù)字式接地電阻表用途使用以及注意要點事項</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-1375146.html">ST2677超高壓耐壓測試儀使用說明工作原理</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="nxnzvbt5" id="z_Footer"> <div id="nxnzvbt5" class="pz_down"> <div id="nxnzvbt5" class="w_1200"> <div id="nxnzvbt5" class="footT"> <div id="nxnzvbt5" class="footAddr"> <div id="nxnzvbt5" class="footTit">上?？档请姎饪萍加邢薰?/div> <div id="nxnzvbt5" class="dAddr"><img class="ico" src="/Skins/334632/images/icon_foot1.png">地址：上海市普陀區(qū)金通路1118弄6號</div> <div id="nxnzvbt5" class="dAddr"><img class="ico" src="/Skins/334632/images/icon_foot2.png">電話：21-51097529/021-51098529</div> <div id="nxnzvbt5" class="dAddr"><img class="ico" 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