Sukura [indian] manufactures an online ups system. These on-line ups systems are available with salient features like high frequency pwm technology; rs232 computer communication port; igbt/mosfet inverter-5: 1 crest factor; and separate heavy duty cccv charging. Some of the technical specifications of these on-line ups systems includes 160-260 v for i-phase ac input voltage range; 300-450 v for 3-phase ac; 50 hz 10%; input frequency; 220/230 v 1% for 1-phase output voltage; 393/415 v 1% for 3-phase; output frequency-50 0.5 hz; high frequency pwm technology; igbt switching device; 2% total harmonic distortion max up to 5 kva, 3% max above 5 kva ups; pure sine output wave form; galvanically isolated input and output; 0.65 lag to unity load power factor; ups power factor better than 0.90 lagging; more than 90% inverter efficiency; more than 85% overall efficiency at 230 v, 50 hz; less than 55db [a] noise level; 0-50 c operating temperature; 95% rh humidity at 40 c temperature; lead acid smf battery; 30/60/120/240 minutes backup time; cccv type battery charging; and 6-8 hours recharge time.
