汇总！常问的POE问题，都在这里了
<section style="background-color: rgb(255, 255, 255);" data-mpa-powered-by="yiban.io"><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-right: 0%; margin-left: 0%; text-align: center;"><section class="" style="display: inline-block;"><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(160, 160, 160); border-radius: 20px; padding: 2px 15px; font-size: 18px; background-color: rgb(254, 255, 255);"><p><strong>POE 功能知多少</strong></p></section><section style="width: 50px; height: 10px; border-left: 1px solid rgb(197, 36, 36); border-right: 1px solid rgb(197, 36, 36); margin: auto; border-top-color: rgb(197, 36, 36); border-bottom-color: rgb(197, 36, 36);"></section></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-right: 0%; margin-bottom: 10px; margin-left: 0%;"><section class="" style="display: inline-block; width: 100%; border-width: 1px; border-style: solid; border-color: rgb(160, 160, 160); padding: 10px; background-color: rgb(254, 255, 255); border-radius: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="font-size: 14px; text-align: justify; line-height: 1.8;"><p style="white-space: normal;">听说一根网线既能传数据又可以供电?</p><p style="white-space: normal;">POE 供电标准是怎么样的？</p><p style="white-space: normal;">POE 供电方式是怎么样的？</p><p style="white-space: normal;">别着急，<span style="letter-spacing: 0px;">我们一起来了解POE的几个小知识吧</span></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(142, 201, 101); display: block; color: rgb(255, 255, 255); line-height: 1.8; letter-spacing: 1.2px;" class=""><p>POE能用四芯网线供电吗？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(142, 201, 101); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="color: rgb(1, 8, 17); font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>POE供电目前有两种方式：</p><p>①1236既走数据又供电；</p><p>②1236走数据，4578供电；</p><p>实际使用的是哪种供电方式取决于POE交换机，这两种供电方式对于我们支持POE的摄像机都兼容的。</p><p>6类线在网线材质上比普通的5类、超5类要好，同时6类线的水晶头结构和5类、超5类也有所不同，<span style="letter-spacing: 1.2px;">传输效果来看，稳定性高、传输质量好。</span></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(95, 156, 239); display: block; color: rgb(255, 255, 255); line-height: 1.8; letter-spacing: 1.2px;" class=""><p>POE供电，网线最远传输距离是多少？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(95, 156, 239); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>POE供电的理论距离是100米，建议控制在80米以内，具体距离根据现场环境测试结果为准</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(142, 201, 101); display: block; color: rgb(255, 255, 255);" class=""><p> POE供电的电压是多少？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(142, 201, 101); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="color: rgb(1, 8, 17); font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>POE，802.3af供电协议</p><p>供电电压：44-57V</p><p>供电电流：10～350mA</p><p>POE，802.3at供电协议</p><p>供电电压：50-57V</p><p>供电电流：10～600mA</p><p>目前海康带POE口的录像机，POE口的对外供电电压是48V，单口功率是30W；POE的摄像机支持哪个协议，您可以在海康官网输入设备型号，在详细参数里进行查看。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(95, 156, 239); display: block; color: rgb(255, 255, 255);" class=""><p> POE供电与外接电源供电方式可以同时使用么？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(95, 156, 239); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>可以的，摄像机会优先检测电源供电，如果没有检测到独立电源，再使用POE网线供电，所以POE供电跟独立电源可以一起接，不冲突。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(142, 201, 101); display: block; color: rgb(255, 255, 255);" class=""><p> 怎么给摄像机选择合适的POE交换机？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(142, 201, 101); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="color: rgb(1, 8, 17); font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>IEEE802.3af供电功率15.4W, 若摄像机功率是10W的，可以使用802.af供电的交换机；</p><p>IEEE802.3at供电功率为30W, 若摄像头功率是20W,需使用802.3at的POE交换机；</p><p><br></p><p>802.3at是向下兼容802.3af的,所以支持802.3af的摄像机可以用802.3af或者at的交换机供电；</p><p>支持802.3at的摄像机则只能使用802.3at的交换机供电；</p><p>但是对于一些大功率的前端设备而言，比如球机，输出的功率达不到要求，无法使用POE交换机供电。</p><p>比如说海康球机DS-2DE7120IW-AE 是Hi-POE的，功率40W,，交换机单口功率无法满足，所以需要使用球机自带的POE模块供电。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;"><section class="" style="display: inline-block;"><span style="padding: 0.3em 0.5em; border-radius: 0.8em 0.8em 0px 0px; background-color: rgb(95, 156, 239); display: block; color: rgb(255, 255, 255); line-height: 1.8; letter-spacing: 1.2px;" class=""><p>海康哪些录像机支持POE功能？</p></span> </section><section class="" style="border-width: 1px; border-style: solid; border-color: rgb(95, 156, 239); border-radius: 0px 0px 0.8em 0.8em; padding: 10px;"><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class="" style="font-size: 14px; line-height: 1.8; letter-spacing: 1.2px;"><p>比如像DS-7808N-F1/P,DS-7932N-K4/16P等 带/P的录像机支持POE</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" powered-by="xiumi.us"><section class="" style=""><section class=""><p><br></p></section></section></section><section class="Powered-by-XIUMI V5" style="" powered-by="xiumi.us"><section class="" style=" margin: 50px 0% 10px;"><section class="" style="display: inline-block; 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