Unverified90% confidenceFactTime unknown
PoE交换机需注意单口供电标准（PoE 15.4W/PoE+ 30W/PoE++ 60W）和整机供电总功率预算，接入大功率AP或摄像头时供电总功率不足会导致设备掉线
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90%
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Long-term
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UnverifiedPoE供电交换机选购必看总功率预算(PoE Budget)，而非端口数：8口PoE若总功率仅60W，实际只能带满2-3个AP(802.3at每口需30W)，需按设备数×单设备功率×1.3余量计算83% similarUnverifiedPoE供电场景需核对总功率预算：一台AP约15W、摄像头约6-12W，交换机PoE总功率应留20%余量，如接4个AP需≥72W预算选120W档81% similarUnverified带PoE的交换机需按供电预算选：单口标准PoE(802.3af)最大15.4W，PoE+(802.3at)最大30W，PoE++(802.3bt)最大60-90W。摄像头选af/at即可，AP面板/云台球机需选at以上，整机总功率预算应≥各设备功率之和×1.281% similarUnverified带PoE供电的交换机看单口输出与整机功率预算：单口af=15.4W、at=30W、bt=60/90W，整机PoE总功率必须≥所有设备叠加，如8个AP各12W需整机≥96W PoE预算78% similarUnverifiedPoE供电设备（网络摄像头、AP）超过30米时不建议用细线径（如AWG26)成品线，压降导致供电不足，应选AWG24及以下纯铜线78% similar
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