Tripp-Lite SUT20K | SmartOnline SUT Series 3-Phase 208/120V 220/127V 20kVA 20kW On-Line Double-Conversion UPS, Tower, Extended Run, SNMP Option
Tripp-Lite SUT20K | SmartOnline SUT Series 3-Phase 208/120V 220/127V 20kVA 20kW On-Line Double-Conversion UPS, Tower, Extended Run, SNMP Option

Tripp-Lite SUT20K | SmartOnline SUT Series 3-Phase 208/120V 220/127V 20kVA 20kW On-Line Double-Conversion UPS, Tower, Extended Run, SNMP Option

Part Number: 9810690
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3-phase UPS system protects mission-critical network equipment against downtime and data loss in data center, telecom, medical, manufacturing and financial environments.


  • VFI True On-Line Double-Conversion 3-Phase UPS System
  • Provides fully regulated sine wave AC output for critical data center, telecom, computer network, light industrial and financial applications
  • +/-1% output voltage regulation in online and battery modes
  • High 1.0 unity power factor with 20kVA/20kW output capacity offers higher capacity than competing 0.8 and 0.9 PF designs
  • Supports 208/120V or 220/127V at 50/60 Hz
  • Wide input voltage window (125–253V) minimizes battery use and prolongs battery life
  • Reliable Battery Backup with Expandable Runtime
  • Supports half load for 15.4 min. and full load for 5.2 min. with standard internal batteries
  • Optional BP288VEBP external battery packs provide additional runtime
  • Sine wave output with zero transfer time compatible with all equipment types
  • IGBT Inverter Technology
  • Produces output power with <2% THD to keep connected equipment functioning at its peak
  • Low <4% full load THDi input rating and advanced IGBT rectifier enables 1:1 generator sizing, eliminating costly oversizing requirements for generators, breakers and cables
  • Paralleling Capability
  • Connect up to 4 units in parallel configuration for N+N fault tolerant redundancy or increased power capacity up to 80kVA
  • Automatic Bypass
  • Maintains output power to connected equipment during a variety of potential UPS fault conditions
  • Economy Mode
  • Increases operating efficiency levels as high as 98% when input line conditions are favorable
  • Remote Management Card Options
  • Compatible with Tripp Lite UPS card accessories, such as WEBCARDLX, that enable comprehensive monitoring and control over a network
  • Communications Ports
  • DB9 (RS-232) port enables data-saving unattended shutdown when used with PowerAlert software (free download at
  • EPO port supports Emergency Power Off shutdown
  • Standard Compliance
  • Tested to UL 1778 5th Edition, CSA C22.2 No. 107.3, NOM, FCC Part 15 Class A (EMC), GB17626-2/IEC 61000-4-2 (Electrostatic Discharge) Level 4, GB17626-3 (Radio-Frequency Electromagnetic Fields) Level 3, GB17626-4 (Fast Transient/Burst) Level 4, GB17626-5/IEC 61000-4-5 (Surge) Level 4 and RoHS


UPC Code37332186690
UPS TypeOn-Line


Rated input current (Maximum Load)67.5A (120/208V); 63.5A (120/208V)
Nominal Input Voltage(s) Supported120/208V 3-PH Wye; 127/220V 3-PH Wye
Nominal Input Voltage Description3-Phase Wye, 4 wire (L1, L2, L3, N, G)
UPS Input Connection TypeHardwire
Input Circuit Breakers75A 3 pole 240V breaker
Input Phase3-Phase


Output Volt Amp Capacity (VA)20000
Output kVA Capacity (kVA)20
Output Watt Capacity (Watts)20000
Output kW Capacity (kW)20
Output Capacity DetailsSupports parallel connection of up to 4 SUT20K systems for 80kVA max capacity or N+N fault tolerance redundancy; Supports up to 100% load continuously, 125% load for up to 10 minutes, 149% load for up to 1 minute and over 150% load for up to 0.5 seconds before transferring to bypass mode; Automatic inverter restart is available when the load level recovers to 95% or less after overload-related transfer to bypass
Power Factor1.0
Crest Factor3:1
Nominal Voltage DetailsFactory default output voltage is 120/208V; Less than 2% THD (full resistive load); Less than 0.1V Max DC Offset; Less than 2° Max Phase Angle Deviation; Less than 1% Max Voltage Unbalance Deviation
Frequency Compatibility50 / 60 Hz
Frequency Compatibility DetailsAuto-selectable frequency configuration


Full Load Runtime (min.)5.2 minutes (20kW)
Half Load Runtime (min.)15.4 minutes (10kW)
Expandable Battery RuntimeSupports extended runtime with optional external battery packs
Expandable RuntimeYes
Expandable Runtime DescriptionExternal battery pack wiring is contractor supplied

Voltage Regulation

Voltage Regulation DescriptionOnline, double-conversion power conditioning maintains ±1% output voltage regulation
Overvoltage CorrectionMaintains continuous operation without using battery power during overvoltages to 253V

User Interface, Alerts & Controls

Front Panel LCD DisplayFront panel LCD with scroll and enter buttons offers display of UPS operating mode, site power and UPS condition monitoring and operating configuration options; LCD also reports alarm conditions, including Short circuit, Inverter fail and Over temperature; Supports English, French, German, Russian, Portuguese, Spanish, Turkish and Polish language options
SwitchesON button turns UPS system on; OFF button turns UPS system off; SELECT/ENTER UP and SELECT/ENTER DOWN buttons enable on-screen selection and navigation options; EPO (Emergency Power Off) button turns UPS output off and disables Bypass output
Alarm Cancel OperationPower-fail alarm can be silenced using alarm-cancel switch

Surge / Noise Suppression

EMI / RFI AC Noise SuppressionYes
AC Suppression Joule Rating9220
AC Suppression Response TimeInstantaneous


Cooling MethodFans
Installation Form Factors Supported with Included AccessoriesTower
Primary Form FactorTower
Primary UPS Depth (mm)800
Primary UPS Height (mm)1351
Primary UPS Width (mm)521
Shipping Dimensions (hwd / in.)61.80 x 28.00 x 39.00
Shipping Weight (lbs.)865
UPS Housing MaterialSteel
UPS Power Module Dimensions (hwd; in.)53.2 x 20.5 x 31.5
UPS Power Module Weight (kg)354.26
UPS Power Module Weight (lbs.)781


Operating Temperature Range+32 to +104 degrees Fahrenheit / 0 to +40 degrees Celsius
Storage Temperature Range+4 to +104 degrees Fahrenheit / -20 to +40 degrees Celsius
Relative HumidityUp to 95%, non-condensing


Network Monitoring Port DescriptionAdditional built-in set of INPUT and OUTPUT contacts support remote notification of Online Mode operation; Battery Mode operation; Bypass Mode operation; Abnormal Bypass Mode Source; Battery Test Failure and Low Battery conditions
PowerAlert SoftwareAvailable via free download from
Communications CableDB9 cabling included
Communications InterfaceDB9 Serial; Slot for SNMP/Web interface

Documents and Downloads

SUT20K runtime chartClick to View
Owner's Manual for SmartOnline SUT 3-Phase UPS System 20/30/40/60kVA (Multi-language)Click to View
3-Phase UPS Systems Visio StencilClick to View
3-Phase UPS Systems Visio Stencil PreviewClick to View
SUT20K Submittal DrawingClick to View
SmartOnline SUT 3-Phase UPS System Brochure (English)Click to View
SmartOnline 3-Phase UPS System Brochure (English)Click to View
Product VideosClick to View
Download images for this productClick to View

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