ST Series Online UPS System

Salient Features
True On-Line Double Conversion TechnologyPure Sine Wave Output
High Frequency PWM InverterCrystal Controlled Output FrequencyWide input voltage tolerance rangeSmooth and silent operationExcellent dynamic response for step load changeFast automatic correction rate for line and load regulationHigh inrush / peak current handling capacityEasy to install, use and maintainInbuilt isolation
Optional Features
Static / Manual BypassHot Stand ByLCD Display
Technical Specifications
Capacity1 KVAto200KVAInput Voltage160-270VAC Two Wire, 330-470 VAC Four Wire Input Frequency47-53 Hz.Rectifier - ChargerAutomatic Float cum Boost Charger, Constant Voltage Constant Current TypeBattery Input36-360 V DC (or as per requirement)Battery Back-up15mins. to 8 hrs. (or as per requirement)Output Voltage230/415VAC (or as per requirement)Regulation± 1% under all Lines and Load ConditionsOutput Frequency50 Hz.Regulation±0.05%Inverter EfficiencyBetter than 90%WaveformPure Sine Wave (Sinusoidal)THD< 3% at Linear LoadTransient Response± 5% under Step Load ChangeTransient Recoverywithin 3 CyclesLoad Power Factor0.8 laggingOverload Capacity110%forl0mins./150%forl0sec.Crest Factor3:1Control MethodSinusoidal PWM ControlSwitching Frequencyabove 12 kHzCircuit MethodOn-Line Double Conversion, Zero Transfer TimeAmbient Temperature0o-45oCRelative Humidity95% RH Max. (Non Condensing)Audible NoiseLess than 55 dB at 1.5 metersCoolingForced Air TypeProtectionsBattery Under and Over Voltage