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Power Infrastructure

Equipment

UPS — CyberPower CP1500PFCLCD

Spec Value
Capacity 1500VA / 1000W
Waveform Pure sine wave (PFC compatible)
Outlets 12 (battery backup + surge)
Form factor Mini tower
Features AVR, LCD display, UL certified

Pure sine wave output is important for modern ATX PSUs and networking gear with active PFC — this UPS handles that correctly.

PDU — VEVOR 8-Outlet Rackmount

Spec Value
Outlets 8
Form factor 1U horizontal rackmount
Voltage / Current 110–125V / 15A
Cable 6ft 14AWG
Protection Surge + overload

The PDU draws from the UPS. Total PDU load must stay under 15A (1800W at 120V) to avoid the breaker, and under the UPS's 1000W capacity to remain on battery.

Power Distribution Plan (confirmed post-move)

The CP1500PFCLCD splits its 12 outlets into a battery+surge bank and a surge-only bank — only the former stays up during an outage.

  • UPS battery+surge bank (direct, not through the PDU):
  • Proxmox (Dell Precision 3620)
  • PDU
  • UPS surge-only bank (direct, no battery backup — acceptable since it's non-critical personal gear, not lab infra):
  • Lenovo ThinkPad T420 + ThinkPad Mini Dock 3
  • PDU (fed from the UPS battery+surge bank, 8 outlets, 6 used):
  • GL.iNet Flint 2 (router)
  • TP-Link TL-SG108E (switch)
  • dell-mini
  • acer-lap
  • HP laptop
  • TP-Link IoT AP (the top-of-rack unit — its power runs to the PDU even though it physically sits with the T420/minidock, which does not)

Power Budget (Estimated)

Device Est. Draw Bank Notes
Dell Precision 3620 ~150–200W UPS battery+surge (direct) Idle ~80W, load ~180W
PDU-fed devices (below) UPS battery+surge (via PDU)
TP-Link TL-SG108E ~7W PDU
GL.iNet Flint 2 ~15W PDU
dell-mini (OptiPlex 3050 Micro) ~20W PDU Rough estimate, not measured
acer-lap ~30W PDU Rough estimate, not measured
hp-lap ~30W PDU Rough estimate, not measured
IoT AP (TP-Link) ~5W PDU
Patch panel 0W — Passive
Lenovo T420 + Mini Dock 3 ~30W UPS surge-only (direct) Rough estimate; not battery-backed, drops immediately on outage
Total, battery-backed (est.) ~257–307W Well within the UPS's 1000W capacity

At ~280W battery-backed load, the 1000W UPS provides roughly 20–25 minutes of runtime on battery (down from the earlier ~30min estimate now that dell-mini/acer-lap/HP are in the budget). Actual runtime depends on battery age and load profile — check CyberPower's runtime curve. The T420/minidock aren't included in this runtime estimate since they're surge-only and lose power immediately in an outage regardless.

Power Flow

flowchart TD
    WALL[🔌 Wall Outlet\n120V / 15A circuit]
    UPS[CyberPower UPS\n1500VA / 1000W\nPure Sine Wave]
    PDU[VEVOR PDU\n8 Outlet 1U\n15A max]

    Dell[Dell Precision 3620\nProxmox]
    T420[Lenovo T420 + Mini Dock 3]
    Switch[TP-Link TL-SG108E]
    Router[GL.iNet Flint 2]
    DellMini[dell-mini]
    AcerLap[acer-lap]
    HP[HP laptop]
    AP[TP-Link IoT AP]

    WALL --> UPS
    UPS -->|battery+surge| Dell
    UPS -->|battery+surge| PDU
    UPS -->|surge only| T420
    PDU --> Switch
    PDU --> Router
    PDU --> DellMini
    PDU --> AcerLap
    PDU --> HP
    PDU --> AP

Recommendations

  • Monitor UPS load via the LCD or PowerPanel software. Target staying below 80% capacity (800W).
  • Test battery runtime annually — CP1500PFCLCD has a self-test function.
  • Label PDU outlets once devices are connected.
  • Consider adding a smart PDU in the future for per-outlet monitoring/switching.