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PoE 給電予算計算機.
IEEE クラス、ポート規格（802.3af/at/bt）、実消費電力から、カメラ・AP・電話に対するスイッチの PoE 予算を確認します。
Some devices are not compatible with the port standard or exceed their class.
- Remaining budget
- 13.6 W
- Power at the devices
- 204 W
- Ports used
- 23 / 24
- Heat from devices and cable loss
- 1,216 BTU/h
Devices
| Device | Qty | Class | Reserved at switch | Notes |
|---|---|---|---|---|
| Wi-Fi 6 access point | 4 | 4 | 120 W | OK |
| IP phone | 12 | 2 | 84 W | OK |
| Fixed IP camera | 6 | 3 | 92.4 W | OK |
| PTZ camera | 1 | 6 | 60 W | needs class 6; 802.3at ports give up to class 4 |
- Class reservations are the IEEE power at the switch port (15.4, 30, 60 or 90 W…), which includes the worst-case loss in 100 m of cable.
- Many switches also limit power per port group or need a second power supply for the full PoE budget; check the switch datasheet.
使い方: PoE 給電予算計算機
データを入力するかファイルを選び、設定を調整して結果を生成します。コピーやダウンロードの前に結果を確認してください。
制限と対応形式
入力内容はお使いの端末で処理されます。
英語の技術説明
Device profiles are typical values; use the datasheet class. Per-port-group limits and redundant power supplies are not modelled. Everything is calculated in your browser; nothing is sent or probed on the network.
Class allocation reserves the IEEE power at the switch port for each class (15.4, 30, 60, 90 W…). Actual-draw mode scales the device draw by the class’s worst-case cable loss.
4 Wi-Fi 6 APs, 12 phones, 6 cameras and a PTZ reserve 356 W of a 370 W budget; the class 6 PTZ is flagged on 802.3at ports.