Ups Sizing Data: rotary
UPS (Uninterruptible Power Supply) system sizing data for critical power design — covers offline/standby, line-interactive, online double conversion, and rotary topologies from 0.5 kVA to 1000 kVA; includes efficiency at 100% and 50% load, transfer time, output voltage regulation, output THD, overload capability, battery type, runtime at full load, heat dissipation, weight, and noise level
| ups topology | power rating kVA | THD output pct (%) | battery type | efficiency pct at 100 load (%) | efficiency pct at 50 load (%) | heat dissipation BTU per hr (BTU/hr) | noise dBA (dBA) | notes | output voltage regulation pct (%) | overload capability pct for 10min (%) | power factor (dimensionless) | power rating kW (kW) | transfer time ms (ms) | typical runtime min at full load (min) | ups id | weight lb (lb) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| rotary | 30 | 3 | Flywheel + diesel (no chemical battery) | 94 | 90 | 9,000 | 65 | Rotary UPS (motor-generator set with flywheel); stores kinetic energy; zero transfer time via flywheel ride-through; diesel engine starts for extended outages (>10 s); very high overload capacity; excellent for non-linear/motor loads; much heavier than static UPS; suitable for industrial processes hospital power and military facilities | 3 | 150 | 0.9 | 27 | 0 | 30 | ROTARY_30KVA | 3,500 |
| rotary | 75 | 3 | Flywheel + diesel | 94 | 90 | 22,500 | 68 | Rotary UPS 75 kVA; motor-generator with diesel genset backup; kinetic ride-through for 10-15 s while diesel starts; no battery maintenance; 30+ year life typical; excellent immunity to input power quality issues; suitable for industrial critical processes utility SCADA and broadcast facilities | 3 | 150 | 0.9 | 67.5 | 0 | 30 | ROTARY_75KVA | 7,500 |
| rotary | 150 | 3 | Flywheel + diesel | 94 | 91 | 40,500 | 70 | Rotary UPS 150 kVA; flywheel kinetic storage plus diesel genset; 30-year life; no battery replacement cost; 97% efficiency over 20 years lifecycle (vs 90% static due to battery replacement overhead); suitable for petrochemical industrial plants utilities and military installations | 3 | 150 | 0.9 | 135 | 0 | 30 | ROTARY_150KVA | 14,000 |
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