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    <td height="30" align="center"><font style="font-size:15px; font-weight:bold;">什么是汽车保险丝？</font></td>
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    <td class="txt"><p>&nbsp; &nbsp; &nbsp; &nbsp;保险丝，是我们习惯的称呼，而它官方名称叫“熔断器”。汽车保险丝的用途与家里保险丝的作用大同小异，当电路电流异常并超过其额定电流时熔断起到电路保护屏障的作用。车用保险丝大致分为两种快熔断保险丝和慢熔断保险丝。</p><p>&nbsp; &nbsp; &nbsp; &nbsp;汽车常用保险丝有高电流保险丝和中低电流保险丝。一般较容易接触到的为中低电流保险丝。中低电流保险大致可分为片式保险丝(包括自动保险丝盒迷你保险丝)、插入式保险丝、旋紧式保险丝、管式保险丝盒平板式保险丝。其中我们能接触到的为中号ATO或小号快熔型片式保险丝。片式保险丝可承载小电流、短时间脉冲电流，如大灯电路、后玻璃除霜等。</p><p>&nbsp; &nbsp; &nbsp; 汽车片式保险丝颜色的国际的标准：2A灰色、3A紫色、4A粉色、5A桔黄色、7.5A咖啡色、10A红色、15A蓝色、20A黄色、25A透明无色、30A绿色和40A深桔色。根据颜色的不同，可以很清楚的区分不同安培数的大小。</p><p>&nbsp; &nbsp; &nbsp; 片式保险丝内的导体由类似于焊料的金属制成，它比普通导线本身的熔点低。该导体的尺寸要通过非常精确的校准，以便在达到额定电流时，能够产生足够的热量熔断该导体，断开电路。保险丝有两个重要的工作参数，一个是工作电压，另外一个则是额定电流，车主在购买或更换时要根据电路中的电压和电流来选择。</p><p><span style="color: rgb(23, 26, 29); font-family: &quot;Microsoft YaHei&quot;, &quot;Segoe UI&quot;, system-ui, Roboto, &quot;Droid Sans&quot;, &quot;Helvetica Neue&quot;, sans-serif, Tahoma, &quot;Segoe UI SymbolMyanmar Text&quot;, 微软雅黑; font-size: 14px; white-space: pre-wrap; background-color: rgb(201, 231, 255);"><span style="color: rgb(23, 26, 29); font-family: &quot;Microsoft YaHei&quot;, &quot;Segoe UI&quot;, system-ui, Roboto, &quot;Droid Sans&quot;, &quot;Helvetica Neue&quot;, sans-serif, Tahoma, &quot;Segoe UI SymbolMyanmar Text&quot;, 微软雅黑; font-size: 14px; white-space: pre-wrap; background-color: rgb(201, 231, 255);"><span style="color: rgb(23, 26, 29); font-family: &quot;Microsoft YaHei&quot;, &quot;Segoe UI&quot;, system-ui, Roboto, &quot;Droid Sans&quot;, &quot;Helvetica Neue&quot;, sans-serif, Tahoma, &quot;Segoe UI SymbolMyanmar Text&quot;, 微软雅黑; font-size: 14px; white-space: pre-wrap; background-color: rgb(201, 231, 255);"><span style="color: rgb(23, 26, 29); font-family: &quot;Microsoft YaHei&quot;, &quot;Segoe UI&quot;, system-ui, Roboto, &quot;Droid Sans&quot;, &quot;Helvetica Neue&quot;, sans-serif, Tahoma, &quot;Segoe UI SymbolMyanmar Text&quot;, 微软雅黑; font-size: 14px; white-space: pre-wrap; background-color: rgb(201, 231, 255);"></span></span></span></span><br/></p></td>
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