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    20kVA Online UPS Uninterruptible Power Supply

    20kVA/16kW 3-Phase Online UPS Uninterruptible Power Supply, with external batteries and LCD panel to display immediate, detailed working information, provides power source for critical electronics with backup battery to guarantee the device in stable and safe operation during power outages, thus avoid data loss.
    SKU: ATO-3-3W 20KML
    Free shipping
    Delivery date: 6-12 days

    20kVA/16kW 3-Phase Online Uninterruptible Power Supply (UPS) with external batteries provides power protections for critical electrical devices in the areas such as medical, financial, telecommunications, school, business and so on.


    • High performance DSP digital control technology
    • Environmentally friendly
    • LCD panel displays opareting information clearly
    • Wide range of input voltage and frequency
    • Excellent electrical performance, applicable to harsh grid environment

    20kVA UPS Specification

    Model 3-3W 20KML
    Phase 3-phase in / 3-phase out
    Capacity 20000VA / 16000W
    Nominal Voltage 3 x 400V AC (3Ph+N) 
    Input Voltage Range 190-520V AC (3-phase) at 50% load; 305-478V AC (3-phase) at 100% load
    Frequency Range 46~54 Hz or 56~64Hz 
    Power Factor 0.99  @ 100% Load
    Output Voltage 110/120V AC or 220/230/240V AC
    AC Voltage Regulation (Batt. Mode) ±1%
    Frequency Range (Synchronized Range) 47~ 53 Hz or 57 ~ 63 Hz
    Frequency Range (Batt. Mode) 50 Hz or 60 Hz ±0.1 Hz
    Current Crest Ratio 3:1 (max.)
    Harmonic Distortion ≤2% THD (Linear Load); ≤5 % THD (Non-linear Load) 
    Transfer Time AC Mode to Battery Mode Zero
    Inverter to Bypass Zero
    Waveform (Batt. Mode) Pure Sinewave
    AC Mode 91%
    ECO Mode 96%
    Battery Mode 87%
    Battery (Not included)
    Battery Type Depending on the capacity of external batteries
    Numbers Depending on the capacity of external batteries
    Charging Current (max.) 4A
    Charging Voltage  273V DC ± 1%
    LCD Display UPS status, Load level, Battery level, Input/Output voltage, Discharge timer, and Fault 
    Battery Mode Sounding every 4 seconds
    Low Battery Sounding every second
    Overload Sounding twice every second
    Fault Continously sounding
     Dimension 592 x 250 x 826 mm
    Weight 40kg
    Humidity 0-95% RH @ 0- 40℃ (Non-condensing)
    Noise Level Less than 65dB @ 1 Meter
    Smart RS-232 Supports Windows® 2000/2003/XP/Vista/2008, Windows®7/8, Linux, Unix and MAC

    Tips: There is no any display on the panel and UPS does not work after the starting up of UPS.

    Judging from the phenomenon, it is the fault of electric supply input, battery, and electric supply detection and battery voltage detection circuit.

    1. Check whether the electric supply input fuse is burned out.
    2. Check whether the battery fuse is burned out and whether the electric supply input fuse is OK. Because the UPS output and display will be shut down when some UPS cannot detect battery voltage.
    3. Check whether the electric supply detecting circuit is working normally if the battery fuse is OK. If it doesn’t work normally and UPS doesn’t has starting up function without electric supply, UPS output and display will be shut down. If the electric supply detecting circuit is working normally, please check whether the battery voltage detecting circuit is normal.
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