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If Phase A is loaded to 95%, Phase B to 60% and Phase C to only 25%, the UPS will still have 40 kVA, or 36 kW, unused. That's 40% of its capacity remaining, despite the 95% reading. Neither the kW nor the kVA capacity of the UPS can be exceeded, but because of the higher PF numbers, it is usually the kW rating that governs today. Patented green operating mode achieves efficiencies over 97%. Smart-ups was the first network UPS to be Energy Star certified. Intelligent battery management, pioneered by APC, maximizes battery performance and life through intelligent, precision temperature compensated charging.