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KSTAR  Online Transformerless Commercial UPS - UC Series

KSTAR Online Transformerless Commercial UPS - UC Series


UC100-200 series UPS is a three-phase in and one-phase out high frequency tower-mounted UPS with an output power factor up to 0.9 and a strong load capacity. It adopts leading DSP online double conversion technology to provide high-level power protection. It supports flexible battery quantity configuration, flexible redundancy design and compatible to the generator to fit diverse environment. It has been widely used in small and medium IDC machine room, control center, industry process control fields and so on.
General Features

● True double-conversion

● DSP technology guarantees high reliability

● N+X parallel redundancy

● Compatible with three-phases and single-phase input

● Selectable quantity of battery for each group:16/18/20 pieces

● 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,Parallel card(Optional),SNMP card(Optional), Relay card (Optional)

● Cold start


Technical Specification
MODEL UC100 UC100L UC150L UC200L
Capacity (VA/Watts) 10K / 9K 15K / 13.5K 20K / 18K
Nominal Voltage 380/400/415Vac(3Ph+N+PE) or 220/230/240Vac(L+N+PE) 
Voltage Range
208~478Vac or 120VAC-276Vac
 Frequency Range
Power Factor ≥0.99
 Voltage Range
Max.voltage: 220V:+25%(Optional +10%,+15%,+20% )
         230V:+20%(Optional +10%,+15%)
240V:+15%(Optional +10% )
   Min. voltage: -45% (Optional -20%,-30%)
ECO Range Same as bypass
 Distortion (THDi)
≤5%(100% non-linear load) 
Rated Voltage 220/230/240Vac
Power Factor 0.9
Voltage Regulation ±1%
Frequency Line Mode ±1%/±2%/±4%/±5%/±10% of the rated
Bat. Mode (50/60±0.1)Hz
Crest Factor 3:1
 Distortion (THD)
≤2% with linear load
≤5% with non-linear load 
Waveform  Pure Sinewave
Transfer Time Utility to Battery : 0ms; Utility to Bypass: 0ms
Efficiency Up to 94% Up to 94.5%
Battery Voltage Selectable Voltage: ±96/108/120Vdc
Recharge Time
6-8 hours (To 90% capacity)
Charging Current  Maximum current 10A
Overload Line Mode Load≤125%: last 5min;≤150%: last 1min;>150% 200ms
turn to bypass mode
Bypass Mode 63A(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
RS-232,USB,Parallel card(Optional), SNMP card(Optional), Relay card (Optional)
Operating Temperature 0℃~40℃
Storage Temperature -25℃~55℃
Humidity Range 0~95% (Non-condensing)
Altitude < 1500m
Noise Level <55dB <58dB
W×D×H (mm)
250×597×655 250×502×616
Net Weight (kg) 76 35 45 46
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,

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