Part Number: SU20KRT-1TF
This Model has been retired and replaced by 9PXM12S20K-PD. An Owner's Manual and other information for the SU20KRT-1TF is available on the model support page
Overview
Features
- Tripp Lite SU20KRT-1TF 20kVA, 20,000VA / 18,000 watt on-line, double-conversion UPS system in 14U total rack/tower configuration
- Unique configuration offers 20kVA non-redundant operation and automatic N+1 redundancy at load levels of 10kVA and under
- Included Parallel PDU with manual bypass switch enables hot-swap replacement of power modules at any supported load level
- Hardwire input; 2 L6-30R (208/240v), 8 C19 (208/240v), 8 5-15/20R (120v) and 4 5-15R (120v) outlets
- Maintains full-time sine wave output within 2% of selectable 200/208/220/230/240V & 120V nominal
- Compatible with Tripp Lite UPS management card options TLNETCARD, WEBCARDLX, SNMPWEBCARD, MODBUSCARD and RELAYIOCARD (NOTE: Applications utilizing any supported network management card option, require the installation of two of the same model network card – install one card per included UPS power module)
- Expandable runtime with optional external battery packs
- Some external battery configurations require the use of Tripp Lite's External Battery Configuration Software (see manual)
- Battery independent restart ensures automatic UPS power-up after lengthy power outages, even with expired batteries
- Intelligent battery management system with temperature-compensated charging extends battery life
- HID-compliant USB interface
- USB & Serial ports enable data-saving unattended shutdown when used with Tripp Lite's PowerAlert software, available via FREE download from tripplite.eaton.com/products/power-alert
- Optional 2POSTRMKITHD supports installation in 2 post 19 inch racks (6 required)
- Optional 2-9USTAND supports upright tower placement (2 required)
- Supports Emergency Power Off (EPO) via built-in interface
- Front panel LEDs and LCD readout with scroll controls
- LED / LCD display panel rotates for viewing in rackmount or tower configurations
- External battery packs are field replaceable and hot swappable
Specifications
OVERVIEW
UPC Code | 037332158260 |
UPS Type | On-Line |
INPUT
Input Phase | Single-Phase |
Rated input current (Maximum Load) | 108A (208V), 93.6A (240V) |
Nominal Input Voltage(s) Supported | 208V AC; 240V AC |
UPS Input Connection Type | Hardwire |
UPS Input Connection Description | 3 wire single phase input (L1, L2, G) |
Recommended Electrical Service | 125A @ 208V, or 240V (L1, L2, G) |
OUTPUT
Output Capacity (VA) | 20000 |
Output Capacity (kVA) | 20 |
Output Capacity (Watts) | 18000 |
Output Capacity (kW) | 18 |
Output Capacity Details | Supports up to 105% load continuously in double conversion mode, 106 to 125% for 1 minute, 126% to 150% for 30 seconds; Loads over 150% trigger immediate bypass mode operation to support loads directly from mains power; Double conversion mode is automatically restored as load levels are reduced to 95% or less |
Power Factor | 0.9 |
Crest Factor | 3:1 |
Nominal Voltage Details | This configuration requires the Power Module be set to 208 or 240V output voltage; included step-down transformer supports 120V output (when the voltage-selection switch on the transformer module is set to match the 208 or 240V power module setting) |
Frequency Compatibility | 60 Hz |
Frequency Compatibility Details | Output frequency regulation +/- 0.05Hz (free running) |
Output Voltage Regulation (Line Mode) | +/- 2% |
Output Voltage Regulation (Battery Mode) | +/- 2% |
Output Receptacle Details | Total 120V output is limited to 4992 watts for 208V input and 5760 watts for 240V input. Additional 120V capacity is available by adding a second SU6000XFMR2U step-down transformer. |
Output Circuit Breakers | POWER MODULE: Two built-in 30A breakers protect one L6-30R outlet each, Eight built-in 20A breakers protect one C19 outlet each; TRANSFORMER MODULE: Two 15A breakers protect 2 5-15R outlets each, Two 20A breakers protect 4 5-15/20R outlets each |
Output AC Waveform (AC Mode) | Pure Sine wave |
Output AC Waveform (Battery Mode) | Pure Sine wave |
Nominal Output Voltage(s) Supported | 120V; 208V; 240V |
Output Receptacles | (4) 5-15R; (8) 5-15/20R; (2) L6-30R; (8) C19 |
BATTERY
Battery Type | Valve Regulated Lead Acid (VRLA) |
Runtime Full Load (min.) | 4.3 min. (18kW) |
Runtime Half Load (min.) | 12.5 min. (9000W) |
Expandable Runtime | Yes |
Expandable Runtime Description | For best results, add external batteries in multiples of two so that both included 10kVA power modules have an equal number and type of connected battery packs |
External Battery Pack Compatibility | BP240V10RT3U; BP240V787C-1PH |
DC System Voltage (VDC) | 240 |
Battery Recharge Rate (Included Batteries) | Less than 6 hours from 10% to 90% (typical, full load discharge) |
Battery Replacement Description | Hot-swappable, user replaceable external battery packs |
VOLTAGE REGULATION
Voltage Regulation Description | 2% output voltage regulation in standard online, double-conversion mode |
Overvoltage Correction | Corrects overvoltages up to 300V |
Undervoltage Correction | Corrects undervoltages as low as 100V |
USER INTERFACE, ALERTS & CONTROLS
Front Panel LCD Display | Selectable LCD display with scroll and selection buttons enables UPS control and detailed monitoring options; LED/LCD panel rotates for viewing in rack/tower formats; LCD Display supports ENGLISH, FRENCH, GERMAN, ITALIAN, SPANISH and PORTUGUESE (see manual) |
Switches | 2 Switches control off/on power status and alarm-cancel/self-test operation; 2 additional switches support set and execute scrolling LCD functions; bundled PDU includes bypass switch to enable hot-swap UPS power module replacement |
Alarm Cancel Operation | Alarm cancel switch |
Audible Alarm | Unique audible alarms for all major UPS, environmental and power conditions (see manual) |
LED Indicators | 6 LEDs indicate line power, online mode, bypass mode, on-battery, charger and AC output status; LCD screen offers additional information and control options |
SURGE / NOISE SUPPRESSION
UPS AC Suppression Joule Rating | 2565 |
UPS AC Suppression Response Time | Instantaneous |
EMI / RFI AC Noise Suppression | Yes |
PHYSICAL
Primary Form Factor | Rackmount |
Rack Height | 14U |
Cooling Method | Fans |
Included Battery Pack Dimensions (hwd / in.) | 5.25 x 17.5 x 25 |
Included Battery Pack Weight (lbs.) | 158.7 |
Included Mounting Accessory Description | 5 sets of adjustable 4 post rack rails included (one for each included 2U/3U module) |
Installation Form Factors Supported with Included Accessories | 4 post 19 inch rackmount |
Installation Form Factors Supported with Optional Accessories | 2 post rackmount ( 2POSTRMKITHD ); Tower ( 2-9USTAND ) |
Maximum Device Depth (in.) | 32.5 |
Minimum Required Rack Depth (inches) | 38 |
Optional Mounting Accessory Notes | Qty 5 2POSTRMKITHD required; Qty 2 2-9USTAND required |
Primary UPS Depth (mm) | 656 |
Primary UPS Height (mm) | 131 |
Primary UPS Width (mm) | 445 |
Shipping Dimensions (hwd / in.) | 31.50 x 40.00 x 51.00 |
Shipping Weight (lbs.) | 630.00 |
Stepdown Transformer Dimensions (hwd / in.) | 3.5 x 17.5 x 21.8 |
Stepdown Transformer Height (mm) | 89 |
Stepdown Transformer Width (mm) | 445 |
Stepdown Transformer Depth (mm) | 554 |
Stepdown Transformer Weight (lbs.) | 72.6 |
Unit Dimension Details | Includes 2 SU10000RT3UPM UPS/Power modules, 2 BP240V10RT3U Battery packs, 1 SU6000XFMR2U transformer and SUPDMB20K parallel bypass PDU; Listed weights and dimensions for UPS/Power module, battery pack and transformer each refer to a single unit; MAXIMUM DEVICE DEPTH specification refers to the whole UPS installed depth with parallel bypass PDU installed |
UPS Housing Material | Steel |
UPS Power Module Dimensions (hwd, in.) | 5.14 x 17.5 x 25.82 |
UPS Power Module Weight (kg) | 20.00 |
UPS Power Module Weight (lbs.) | 44.1 |
ENVIRONMENTAL
Operating Temperature Range | +32 to +104 degrees Fahrenheit / 0 to +40 degrees Celsius |
Storage Temperature Range | +5 to +122 degrees Fahrenheit / -15 to +50 degrees Celsius |
Relative Humidity | 0 to 95%, non-condensing |
AC Mode BTU / Hr. (Full Load) | 6830 |
AC Mode Efficiency Rating (100% Load) | 90% |
Battery Mode Heat Dissipation (BTU/Hr) @ Full Load | 9185 |
Operating Elevation | 0-3000m (0 to 10,000 ft.) |
Audible Noise | 60 dBA at front side 1 meter |
COMMUNICATIONS
Network Management Cards | SNMPWEBCARD; TLNETCARD ; WEBCARDLX; MODBUSCARD ; RELAYIOCARD |
Network Monitoring Port Description | Applications utilizing any supported network management card option, require the installation of two of the same model network card – install one card per included UPS power module; RELAYIOMINI installation requires removal of panel containing USB ports on each included UPS power module |
PowerAlert Software | For local monitoring via the UPS’s built-in communication ports, download PowerAlert software at https://tripplite.eaton.com/products/power-alert |
Communications Cable | USB, DB9 serial and EPO cables included |
WatchDog Compatibility | Supports Watchdog application, OS and hard-reboot restart options for remote applications |
Network Management Card Description | Network management card optional |
Communications Interface | DB9 Serial; EPO (emergency power off); Slot for SNMP/Web interface; USB (HID enabled) |
LINE / BATTERY TRANSFER
Transfer Time | No transfer time (0 ms.) in online, double-conversion mode |
Low Voltage Transfer to Battery Power (Setpoint) | 100V |
High Voltage Transfer to Battery Power (Setpoint) | 300V |
FEATURES & SPECIFICATIONS
Cold Start (Startup in Battery Mode During a Power Failure) | Cold-start operation supported |
High Availability UPS Features | Auto Probe Monitoring (requires WEBCARDLX); Automatic inverter bypass; Expandable battery backup; Hot swappable UPS power module; Hot swappable batteries; Manual bypass switch; N+1 Redundant up to 50% capacity; On-Line/Double-Conversion; Remote management; Sine wave output; Surge/noise protection; Zero transfer time |
Green Energy-Saving Features | Support for daily startup and shutoff |
APPLICATIONS
UPS Applications | Mission Critical Applications |
STANDARDS & COMPLIANCE
Product Certifications | IEC 61000; CSA (Canada); UL 1778 |
Product Compliance | RoHS; FCC Part 15 Class A (USA) |
WARRANTY & SUPPORT
Product Warranty Period (Worldwide) | 2-year limited warranty |
Connected Equipment Insurance (U.S., Canada & Puerto Rico) | $250,000 Ultimate Lifetime Insurance |
Questions & Answers

Documents & Downloads
Documentation
- SU20KRT-1TF runtime chart
- PowerAlert External Battery Pack Utility (PAEBPU) – UPS Compatibility Chart
- Owner's Manual for SU6000XFMR2U SmartOnline 6kVA Transformer
- Owner's Manual for BP Battery (Multi-language)
- Owner's Manual for SmartOnline 8kVA-10kVA UPS (Multi-language)
- Owner's Manual for 8 and 10kVA Parallel PDUs (Multi-language)
- Owner's Manual Addendum for SU6000XFMR2U (English)
- Product Datasheet
Design Resources
Declarations of Conformity
Useful Web Pages
Product Videos
- New Auto-Probe Feature on UPS Systems and PDUs
https://tripplite.eaton.com/video/new-auto-probe-feature-on-ups-systems-and-pdus/842795 - SU20KRT-1TF SmartOnline UPS System
https://tripplite.eaton.com/video/su20krt-1tf-smartonline-ups-system/60556 - The Need for Hot-Swappable UPS Systems Demo
https://tripplite.eaton.com/video/the-need-for-hot-swappable-ups-systems-demo/45731
Product Images