Unverified90% confidenceDecision RuleTime unknown
选PoE供电交换机给摄像头/AP供电时，需关注整机PoE供电总功率预算而非单口功率。例如8口标称每口30W但整机预算仅120W，实际只能带满4个满载设备
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UnverifiedPoE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91% similarUnverifiedPoE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87% 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85% similarUnverified监控系统选PoE交换机时，需确认单口输出功率与总供电预算：单个IPC约需5-15W，PoE+(802.3at)单口30W，需注意标称总功率往往低于'端口数×单口最大'，8口PoE整机预算通常仅60-130W83% 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×1.283% similar
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