1 0.98 0.96 0.94 0.92 0.9 0.88 115V 0.86 0.84 230V 0.82 277V 0.8 0.78 50% 60% 70% 80% 90% 100% 94 92 90 88 86 115V 84 82 230V 80 277V 78 76 74 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%