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<div class="tt">EN IEC 61000-4-29:2026 重點說明</div>
<div class="txt2 txtimg"><p><span style="color: rgb(0, 176, 240);"><strong>一、標準名稱與用途</strong></span></p><p>電磁相容性 EMC - 第 4-29 部：試驗與量測技術－直流輸入電源埠之電壓驟降、短暫中斷及電壓變動抗擾度試驗</p><p>此標準主要用來評估設備的 DC 電源輸入埠 在遭遇下列電源品質異常時，設備是否仍能維持正常功能或可接受的性能：</p><table cellspacing="0" cellpadding="0"><tbody><tr class="firstRow" style="height: 23px;"><td width="94" valign="middle" align="center" style="padding: 0px 7px; border-color: windowtext; background: rgb(0, 112, 192); word-break: break-all;"><p><span style="color: rgb(255, 255, 255);"><strong>測試項目</strong></span></p></td><td width="518" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>說明</strong></span></p></td></tr><tr><td width="94" align="center" valign="middle" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>電壓驟降</p></td><td width="518" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>DC 電壓短時間下降，例如 &nbsp; 100% 額定電壓降到 70%、40% 或更低；</p></td></tr><tr><td width="94" align="center" valign="middle" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>短暫中斷</p></td><td width="518" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>DC &nbsp; 電源短時間中斷，接近 0 V；</p></td></tr><tr><td width="94" align="center" valign="middle" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>電壓變動</p></td><td width="518" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>DC 電壓在一段時間內上升或下降，例如模擬電池、備援電源或 DC network 切換狀況；</p></td></tr></tbody></table><p>公開草案目錄顯示 2026 版仍維持三大測試主軸：voltage dips、short interruptions、voltage variations，並包含 test levels、test generator、test set-up、test procedure、evaluation、test report 等章節。</p><p>&nbsp;</p><p><span style="color: rgb(0, 176, 240);"></span></p><hr/><p><span style="color: rgb(0, 176, 240);"><strong>二、適用對象</strong></span><br/></p><p>此標準適用於具有 DC 電源輸入埠 的電氣/電子設備，尤其是由外部 DC 網路或 DC 電源系統供電的產品。IEC 61000-4-29:2000 的公開說明指出，其目的為建立共同且可重現的測試基礎，用於測試設備在 DC 電源埠遭遇電壓驟降、短暫中斷或電壓變動時的抗擾度。</p><p>常見適用產品類型包括：</p><table cellspacing="0" cellpadding="0"><tbody><tr class="firstRow"><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-color: windowtext; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>產品/系統</strong></span></p></td><td width="250" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>適用情境</strong></span></p></td></tr><tr><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>工業控制設備</p></td><td width="250" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>24 &nbsp; Vdc、48 Vdc 控制電源</p></td></tr><tr><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>通訊/網通設備</p></td><td width="250" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>-48 Vdc telecom power</p></td></tr><tr><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>資料中心 DC 供電設備</p></td><td width="250" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>380 &nbsp; Vdc、400 Vdc、800 Vdc 等新型 DC distribution</p></td></tr><tr><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>鐵道/車載/電力設備</p></td><td width="250" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>DC 輔助電源輸入</p></td></tr><tr><td width="198" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>儲能/電池供電設備</p></td><td width="250" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>電池切換、充放電或備援電源切換</p></td></tr></tbody></table><p>&nbsp;</p><hr/><p><strong><span style="color: rgb(0, 176, 240);">三、與 IEC 61000-4-11 / 4-34 的差異</span></strong><br/></p><table cellspacing="0" cellpadding="0"><tbody><tr class="firstRow"><td width="160" valign="middle" align="center" style="padding: 0px 7px; border-color: windowtext; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>標準</strong></span></p></td><td width="123" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>適用電源型態</strong></span></p></td><td width="293" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><span style="color: rgb(255, 255, 255);"><strong>適用範圍</strong></span></p></td></tr><tr><td width="160" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>IEC/EN &nbsp; 61000-4-11</p></td><td width="123" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>AC</p></td><td width="293" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>每相輸入電流 ≤ 16 A 的 AC 電源設備</p></td></tr><tr><td width="160" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>IEC/EN 61000-4-34</p></td><td width="123" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>AC</p></td><td width="293" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>每相輸入電流 &gt; 16 &nbsp; A 的 AC 電源設備</p></td></tr><tr><td width="160" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>IEC/EN &nbsp; 61000-4-29</p></td><td width="123" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>DC</p></td><td width="293" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>DC &nbsp; 電源輸入埠設備</p></td></tr></tbody></table><p>簡單說，IEC/EN 61000-4-11 / IEC/EN 61000-4-34 是 AC 電源驟降與中斷測試，IEC/EN 61000-4-29 是 DC 電源驟降與中斷測試。</p><p>&nbsp;</p><p><strong><span style="color: rgb(0, 176, 240);"></span></strong></p><hr/><p><strong><span style="color: rgb(0, 176, 240);">四、2026 版相較 2000 版的主要變更</span></strong><br/></p><p>根據 prEN IEC 61000-4-29:2026 草案前言，第二版將取代 2000 年第一版，屬於技術性修訂。</p><p>公開樣本列出的主要技術變更如下：</p><table cellspacing="0" cellpadding="0"><tbody><tr class="firstRow"><td width="204" valign="middle" align="center" style="padding: 0px 7px; border-color: windowtext; background: rgb(0, 112, 192);"><p><strong><span style="color: rgb(255, 255, 255);">變更專案</span></strong></p></td><td width="204" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><strong><span style="color: rgb(255, 255, 255);">說明</span></strong></p></td><td width="204" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><strong><span style="color: rgb(255, 255, 255);">實務影響</span></strong></p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>提高測試產生器輸出電壓能力</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>因應新的 &nbsp; DC network voltage</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>對高壓 DC，如 380/400/800 Vdc 設備更重要</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>增加電壓變化持續時間 tolerance</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>對 duration 容差更明確</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>測試設定與報告需記錄實際持續時間</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>低阻抗條件下短暫中斷需限制電流</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>避免短路/大電流風險</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>測試設備與 &nbsp; EUT 保護條件需確認</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>厘清測試產生器規格與驗證</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>generator specification / &nbsp; verification 更明確</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>校驗或驗證項目可能增加</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>厘清 &nbsp; switching characteristics 與 inrush current 驗證負載</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>增加對負載條件的說明</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>實驗室需確認驗證用負載是否符合新版</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247);"><p>厘清結果判定與測試報告</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>evaluation / test report 更明確</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>報告格式需補足測試等級、duration、performance criteria</p></td></tr><tr><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>增加 DC &nbsp; environment 描述</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>Annex &nbsp; C 描述 DC network</p></td><td width="204" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>有助於說明 &nbsp; DC 系統使用情境</p></td></tr></tbody></table><p>&nbsp;</p><p><span style="color: rgb(0, 176, 240);"></span></p><hr/><p><span style="color: rgb(0, 176, 240);"><strong>五、測試觀念說明</strong></span><br/></p><p>此測試不是 surge、EFT 或 ripple，而是模擬 DC 電源供應品質異常。</p><p>常見情境如下：</p><table cellspacing="0" cellpadding="0"><tbody><tr class="firstRow"><td width="132" valign="middle" align="center" style="padding: 0px 7px; border-color: windowtext; background: rgb(0, 112, 192);"><p><strong><span style="color: rgb(255, 255, 255);">現象</span></strong></p></td><td width="369" valign="middle" align="center" style="padding: 0px 7px; border-width: 1px 1px 1px medium; border-style: solid solid solid none; border-color: windowtext windowtext windowtext currentcolor; background: rgb(0, 112, 192);"><p><strong><span style="color: rgb(255, 255, 255);">可能原因</span></strong></p></td></tr><tr><td width="132" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>DC &nbsp; 電壓驟降</p></td><td width="369" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>大負載啟動、電池切換、DC bus 瞬間壓降</p></td></tr><tr><td width="132" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext; background: rgb(218, 233, 247); word-break: break-all;"><p>DC&nbsp; &nbsp;短暫中斷</p></td><td width="369" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor; background: rgb(218, 233, 247);"><p>電源切換、保護裝置動作、接點瞬斷</p></td></tr><tr><td width="132" valign="middle" align="center" style="padding: 0px 7px; border-width: medium 1px 1px; border-style: none solid solid; border-color: currentcolor windowtext windowtext;"><p>DC &nbsp; 電壓變動</p></td><td width="369" valign="top" style="padding: 0px 7px; border-width: medium 1px 1px medium; border-style: none solid solid none; border-color: currentcolor windowtext windowtext currentcolor;"><p>電池/整流器切換、備援電源轉換、DC network 調壓</p></td></tr></tbody></table><p>測試時通常需設定：</p><p>1. 額定 DC 輸入電壓 Un；</p><p>2. 測試等級，例如下降至某一百分比或中斷至 0 V；</p><p>3. 持續時間 duration；</p><p>4. 重複次數與間隔；</p><p>5. EUT operation mode；</p><p>6. Performance Criteria A/B/C 或產品標準指定判定準則；</p><p>&nbsp;</p><hr/><p><span style="color: rgb(0, 176, 240);"><strong>六、對 800 Vdc / HVDC 產品的意義</strong></span><br/></p><p>2026 版特別提到提高測試產生器輸出電壓能力，以因應新的 DC network voltages。這代表新版很可能更貼近目前高壓 DC 系統，例如資料中心 DC 配電、儲能系統、電力轉換設備或 800 Vdc 架構。</p><p>但要注意：IEC 61000-4-29 本身是 basic EMC publication，不一定直接等於某產品的強制適用標準。實務上仍要看產品適用的產品標準或 generic standard。</p><p><br/></p><hr/><p><span style="color: rgb(0, 176, 240);"><strong>七、簡短結論</strong></span><br/></p><p>EN IEC 61000-4-29:2026 是針對 DC 電源輸入埠的電壓驟降、短暫中斷與電壓變動抗擾度測試標準。</p><p>新版重點是因應新型 DC network，尤其是較高 DC 電壓系統，並厘清測試產生器能力、duration tolerance、短暫中斷時的電流限制、inrush current 驗證、結果判定與報告要求。若產品採用 24/48/380/400/800 Vdc 等 DC 輸入，且產品標準或客戶規格要求 DC power port immunity，則此標準具有高度參考價值。</p><p><br/></p><p><br/></p></div>
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