Sizing a UPS incorrectly leads to either wasted money or catastrophic downtime. Here is how to size properly:
1. Calculate Total Load – Include all equipment, add 20-30% growth buffer
2. Determine Runtime – 5-15min for generator support, 30-60min for battery only
3. Choose Topology – Line Interactive, Online Double-Conversion, or Modular
4. Plan Redundancy – N (basic), N+1 (one extra), or 2N (complete)
Common sizes: Small (5-10 racks): 10-30kVA, Medium (10-25 racks): 50-100kVA, Large (25-50 racks): 200-500kVA
#UPS #DataCenter #Infrastructure