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KSTAR UD series online double conversion UPS System adopts advanced DSP control and N+X redundancy design to enhance the reliability. With high power factor (PF) and ECO mode operation for energy saving, UD series is the cost-effective choice in the industry. It has been widely used for server rooms, personal computers, data warehouses, medical clinics, industrial application and office facilities.

General Features

● True double-conversion

● Real-time digital signal processor (DSP) control

● N+X parallel redundancy

● Selectable quantity of battery for each group:for long run unit

● Adjustable charging current via LCD

● 3-stage charging design optimizes battery performance

● ECO mode operation for energy saving

● Self-diagnosis at startup

● Emergency power off function(EPO)

● Maintenance bypass is convenient for maintenance

● Generator compatible

● Communications:RS-232,USB,SNMP card(Optional), Relay card (Optional)

● Cold start

Technical Specification

MODEL  UD10 / UD10L UD15 / UD15L UD20 / UD20L UD30 / UD30L UD40L UD60L UD80L
Capacity (VA/Watts) 10K / 9K 15K / 13.5K 20K / 18K 30K / 27K 40K / 36K 60K / 54K 80K / 72K
Nominal Voltage 380/400/415Vac(3Ph+N+PE)
Operating Voltage Range 208~478Vac@half load; 305~478Vac@full load
Operating Frequency Range 50Hz:45~55Hz,60Hz:54~66Hz
Power Factor ≥0.99
  Max.voltage: 220V:+25%(Optional +10%,+15%,+20% )
Bypass Voltage Range 230V:+20%(Optional +10%,+15%)
  240V:+15%(Optional +10% )
  Min. voltage: -45% (Optional -10%, -20%,-30%)
ECO Range Same as bypass
Harmonic Distortion (THDi) ≤3%(100% non-linear load)
Output Voltage 380/400/415Vac(3Ph+N+PE)
Power Factor 0.9
Voltage Regulation ±1%
Frequency Line Mode ±1%/±2%/±4%/±5%/±10% of the rated frequency(Optional)
Bat. Mode 50/60(1±0.1%)Hz
Crest Factor 3:01
Harmonic Distortion (THDv) ≤2% with linear load
≤5% with non-linear load
Waveform Pure Sinewave
Transfer Time Utility to Battery : 0ms; Utility to Bypass: 0ms
Efficiency 95%
Battery Standard unit ±120Vdc (20pcs 12V9AH) ±120Vdc (2x20pcs 12V9AH) ±120Vdc (3x20pcs 12V9AH) N/A
Voltage Long run unit Selectable Voltage:±96V/±108V/±120Vdc Selectable Voltage:±192V/±204V/±216V/ ±228V/±240Vdc
Charging Standard unit 1.35 2.7 4.05 N/A
Current (A) Long run unit Max.current 10A Max.current 15A Max.current 30A
  Line Mode Load≤110%: last 60min, ≤125%: last 10min, ≤150%: last 1min, ≥150% turn to bypass mode immediately
Overload Bat. Mode Load≤110%: last 10min, ≤125%: last 1min, ≤150%: last 5S, ≥150% shut down UPS immediately
  Bypass Mode 20A(Input breaker) 32A(Input breaker) 40A(Input breaker) 63A(Input breaker) 80A(Input breaker) 100A(Input breaker) 125A(Input breaker)
Short Circuit Hold Whole System
Overheat Line Mode: Switch to Bypass; Backup Mode: Shut down UPS immediately
Battery Low Alarm and Switch off
Audible & Visual Alarms Line Failure, Battery Low, Overload, System Fault
Status LED & LCD Display Line Mode, Backup Mode, Eco Mode, Bypass Mode, Battery Low, Battery Bad, Overload & UPS Fault
Parameters On The LCD Panel Input/Output Voltage, Input/Output Frequency, Load Level, Battery Level, Inner Temperature & Remaining Battery Backup Time
Communication Interface RS-232,RS-485,USB,Parallel card, SNMP card(Optional), Relay card (Optional),Battery temperature sentor(optional)
Operating Temperature 0~40℃
Storage Temperature -25~55℃
Humidity Range 0~95% (Non-condensing)
Altitude < 1500m
Noise Level <55dB <58dB <63dB
Dimension W×D×H (mm) 250×828×868 360×828×868
Net Weight (kg) 115/57 170/63 171/64 223/71 73 118 122
Noise Suppression Complies with EN62040-2
Safety IEC/EN62040-1,IEC/EN60950-1
EMC IEC/EN62040-2,IEC61000-4-2,IEC61000-4-3,IEC61000-4-4,
Specifications are subject to change withour notice in advanced