What can a 3000VA UPS power?
A 3000VA UPS (uninterruptible power supply) can power devices with a total load of up to 2400 watts (assuming a 0.8 power factor). It supports critical equipment like small servers, networking gear, medical devices, or multiple workstations during outages. Runtime depends on battery capacity—standard configurations typically provide 10–30 minutes for moderate loads (e.g., 1,200W), while extended battery modules can sustain operations for hours.
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What devices can a 3000VA UPS support?
A 3000VA UPS can handle mid-sized IT infrastructure, including 2–3 servers, 5–8 workstations, or hybrid setups combining routers, switches, and storage arrays. Pro Tip: Deduct 20% from the UPS’s rated wattage (2,400W) for safety margins—plan for ≤1,920W continuous load.
For example, a 3000VA unit could power a small office with three desktop PCs (300W each), a NAS (200W), and a network switch (50W), leaving ~700W for monitors and peripherals. However, avoid high-surge devices like laser printers—their startup currents often exceed UPS tolerances. Transitionally, while 3000VA systems excel for IT loads, they’re less suited for HVAC or industrial motors. Always verify equipment power ratings using a wattmeter before deployment.
How long can a 3000VA UPS last during an outage?
Standard 3000VA UPS units provide 10–30 minutes for half-load scenarios (1,200W). Extended runtime requires external battery banks. For instance, doubling battery capacity increases runtime to ~1–2 hours at 1,200W.
Practically speaking, a 3000VA/2400W UPS with one 100Ah 48V battery bank (4.8kWh) sustains a 1,200W load for ~3.5 hours. Transitionally, runtime plummets at higher loads—full 2,400W draws drain batteries in 15–20 minutes. Pro Tip: Use online runtime calculators factoring in load wattage, battery voltage, and Ah ratings. For example, a medical clinic running two 500W MRI machines and lighting (400W) would need at least two external 200Ah batteries for 2+ hours of backup.
| Load (W) | Standard Runtime | With 2x Batteries |
|---|---|---|
| 800 | 45 mins | 4 hours |
| 1,600 | 18 mins | 1.5 hours |
| 2,400 | 8 mins | 40 mins |
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FAQs
Yes, but only if the fridge’s startup surge (often 2,000–3,000W) stays within the UPS’s peak capacity. Most 3000VA units handle 3,600–4,500W surges briefly.
Is a 3000VA UPS suitable for gaming PCs?
Absolutely—a high-end gaming PC (800W) plus two monitors (100W) consumes ≤900W, leaving ample headroom for routers or speakers.