[分享]防跳继电器的工作原理

<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 35kV<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">及以上的断路器，常采用“电气防跳”。此种防跳<a href="http://www.relay88.com/" target="_blank">继电器</a>有两个线圈，一个是供启动用的电流线圈，接在跳闸回路中；另一个是自保持用的电压线圈，通过本身的常开触点（</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ1</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">）接入合闸回路。</span><br/></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">&nbsp;&nbsp;&nbsp; 当合闸过程中，如正遇永久性故障，因而保护出口<a href="http://www.relay88.com/" target="_blank">继电器</a>触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">闭合，断路器跳闸，并起动防跳<a href="http://www.relay88.com/" target="_blank">继电器</a></span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">。若控制开尖手柄（合闸按钮）未复归或其触点被卡住，以及自动合闸装置的合闸触点被卡住（没有分开），因为防跳<a href="http://www.relay88.com/" target="_blank">继电器</a>的触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ1</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">已经闭合，致使</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的电压线圈带电，起自保持的作用。另外，触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ2</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">业已断开，能幸免合闸线圈</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">HQ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">再次导通，也就防止了断路器发生“跳跃”。</span></span><br/></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">&nbsp;&nbsp;&nbsp;&nbsp;触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ3</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">（与</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的触点并在一起）的作用，是为了防止保护出口<a href="http://www.relay88.com/" target="_blank">继电器</a></span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的触点被烧坏。由于自动跳闸时，</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的触点也许较辅助触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">QF2</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">（串在跳闸线圈</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TQ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">前的断路器常开辅助触点）先断开，以致被电弧烧坏。</span></span></p><br/>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">&nbsp;&nbsp;&nbsp; 因为</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">TBJ3</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">与它并联，即使</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times"  New="New"  Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的触点先断，也不会被烧坏，而且还有跳闸出口存在。</span></span></p>