UPS Calculator
ON LINE 0 W LOAD 30 MIN TARGET
PSS / LTS UPS RANGE
For Installers & Integrators
UPS.RUNTIME
Build the real load on your rack — NVR, drives, and any PoE switches — and see exactly how long each PSS UPS will hold it up. Runtime curves are pulled from PSS's own published Eco Series data, not a generic formula.
! Planning estimate only. Runtime figures for the PSS Eco Series (600 / 1000 / 1400L / 2200L) are interpolated directly from PSS Distributors' published runtime tables; the 800L figure is scaled from that data by battery capacity and marked as such. APC models are shown for reference only — request their runtime curve from PSS before quoting. NVR, hard drive, and PoE switch wattages — including the WD Pro-series figures, which run higher than standard WD Purple/Red Plus drives — are typical figures for planning purposes; always confirm against the exact model's datasheet, especially for loads close to a UPS's rated capacity.
01 NVR
Pick the closest match, then adjust the wattage if you have the exact figure from the datasheet.
02 Hard Drives (WD)
Add one row per drive capacity installed in the NVR. Power draw is typical WD surveillance-class (Purple / Red Plus) figures.
03 External PoE Switches
Only needed if the NVR itself has no PoE, or you're powering extra cameras from a standalone switch. Add one row per switch.
04 Extras & Backup Target
05 Total Load & Recommendation
0
W total load
NVR + drives + switches + extras
Recommended UPS—
Estimated runtime at this load—
Battery configuration—
Headroom vs UPS rated capacity—
06 Load Breakdown
| Item | Detail | Watts |
|---|
LTS / PSS UPS Runtime Calculator — built for LTS Security Australia installers, using PSS Distributors' published Eco Series runtime data. Figures are engineering estimates for planning; always confirm exact wattages before ordering hardware.
