10KVA Online UPS with Step-Down Transformer, TAC-TW10KD

In stock

Capacity: 10000VA / 10000W (10kVA / 10kW)
Topology: Online double-conversion
Waveform: Sine wave
Outlets: Terminal

• Sine wave output
• DSP technology
• 1.0 power factor
• <2% output voltage regulation
• Low THDi & THDv
• Step-down isolation transformer for 100 / 110 / 115 / 120V and 208 / 220 / 230 / 240Vac output voltage
• ECO Mode
• Intelligent slot for an optional network card
• Optional external battery bank
• Parallel up to 3 units

TUV logo

The Tacoma II Series is a true double-conversion online UPS with a step-down transformer and pure sine wave output delivering reliable power protection for mission-critical equipment. An expansive list of features delivers high-performance technology and features for optimal UPS performance for this series. This series allows for the expansion of the UPS reliance with a parallel-redundant setup up to 3 units (N+X) or a parallel-capacity system (N) to increase overall capacity up to 3 units for 30kVA capacity. An output voltage regulation of 2% or lower delivers more precise power to sensitive electronics for better UPS performance.


Typical Applications
Server rooms
Surveillance systems
Lab equipment

Telecommunication equipment
VoIP / PBX systems
Automation equipment

Financial institutions
Emergency lighting
Security systems


Main Features
Output Isolation Transformer
The step-down isolation transformer delivers 100 / 110 / 115 / 120 / 127Vac and 208 / 220 / 230 / 240Vac output voltage while suppressing high frequency noise from the output voltage.

Zero Transfer Time
True online double-conversion topology for zero transfer time from Line Mode to Battery Mode in case of a power disturbance prevents malfunction of mission-critical equipment.

Pure Sine Wave Output
Best waveform for sensitive electronics. Benefits include:
• Smoother waveform
• Best for sensitive equipment
• Higher quality than a modified sine wave
• Maintains voltage at a safe level
• Motors run at their intended speed and with less heat
• Equipment runs with less noise
• IT equipment lasts longer
• Low harmonic distortion

DSP Controlled Technology
DSP (digital signal processor) controlled technology for high reliability, accuracy, and efficiency.

Active PFC to Improve Power Factor
Active PFC (power factor correction) improves the power factor and power quality of the UPS by reducing harmonic distortion in the electrical system to improve energy efficiency and reduce energy loss. Additional benefits include active wave shaping of input current, low voltage drop, filtering high-frequency switching, waveform control through feedback sensing from the power source, and regulation of output voltage based on feedback control.

High Overload Capacity
UPS can handle overload up to 125% for up to 10 minutes, and up to 150% load for up to 30 seconds.

<2%Output Voltage Regulation
The UPS regulates the output voltage to be within 2% of the set output voltage. Voltages outside acceptable ranges can cause electronics and electrical components to overheat and may cause premature failure of the devices.

The voltage reference of this UPS is set to a fixed 2% output voltage regulation even when parameters such as ambient temperature change. A precise output voltage is important for sensitive electronic equipment such as ones that require calibration for accuracy and also sensitive electronics are more susceptible to damage when receiving power outside its input range.

OVCD & Overload Protection
Protects the UPS from overvoltages and overload.

OVCD (overvoltage cut-off device) cuts off power to the UPS from neutral open or double phasing, and delays powering on the UPS when such a problem occurs to avoid initial power surges that are harmful to the UPS. The UPS will automatically start up again once voltage power returns to a normal state.

THDi <5% and THDv <2%
Low UPS THDi and THDv by firmware monitoring and control. THDi (input current total harmonic distortion) under 5% when powering on the UPS from the mains power source to the UPS rectifier. A low THDv (voltage total harmonic distortion or THDu) decreases the deviation of voltage from the ideal sine wave shape.

High or unregulated THD reduces the performance capabilities of the UPS and passes onto connected equipment for equipment failure, data loss, cut down lifespan, and causes overheating. Low THD improves power quality, allows higher power factor, lowers peak currents, and offers higher UPS efficiency.

ECO Mode
ECO (efficiency corrective optimizer) Mode improves energy consumption by changing how power flows through the UPS by setting the UPS to "standby." Input power will bypass voltage to output when the input voltage is within the acceptable range. Power factor correction and the inverter are still active in this mode.

Built-in MBS 
Safely service the UPS while keeping connected equipment powered with the built-in MBS (maintenance bypass switch).

Temperature Sensor
An internal sensor detects overheating of the UPS and turns on the internal fans as needed to keep the UPS cool.

Fan Lock Sensor
A built-in sensor detects if the fan is jammed, preventing the fan from cooling the UPS system.

Advanced Battery Management
Maximize battery performance and lifespan with an intelligent, 3-stage battery charging system based on Constant Current, Constant Voltage, and Floating Charge for optimal battery charging performance.

EMI / RFI Filter
EMI (electromagnetic interference) / RFI (radio frequency interference) filter suppresses electromagnetic noise and radio frequency interference transmitted from AC power.

Cold Start Capable
Turn on the UPS even without utility power as long as there is sufficient battery power.

Auto-Restart During AC Recovery
Once power returns to normal and the battery levels are sufficient, the UPS will automatically restart.

N+X Parallel Redundancy (up to 3 units)
This series allows for the expansion of the UPS reliance with a parallel-redundant setup up to 3 units (N+X) or a parallel-capacity system (N) to increase overall capacity up to 3 units for 30kVA capacity.

Power Management Software
Monitor and control the UPS from your computer with the included user-friendly software to automate computer shutdown, monitor battery levels, set UPS parameters, receive alerts of abnormalities, and more.

Instantly shut off the UPS and prevent the UPS from supplying power in the event of an emergency by pulling on the EPO (emergency power off) tab.

Optional Accessories (Not Included)
• Network Management Card - For remote power monitoring. See model number #NMC for compatibility with this UPS series.
• Parallel Cable - Parallel up to 3 units for parallel redundancy. 2 x cables required per paralleled UPS set.

Warranty (US & Canada)
2-year equipment warranty, 2-year battery warranty, and 2-year $25,000 connected equipment warranty with product registration. See Terms of Use and Warranty pages for additional information.

WARNING: The batteries, battery posts, terminals, and related accessories in this product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. Wash hands after handling. For more information, go to www.p65warnings.ca.gov.
Model TAC-TW10KD
Capacity 10000VA / 10000W
Topology Online double-conversion
Voltage 208 / 220 / 230 / 240Vac
Voltage Range 176 - 276Vac at full load / 110 - 176Vac derating at 50% load linearly
Frequency 45 - 55Hz / <60% rated load: 40 - 70Hz
>60% rated load: 54 - 66Hz
Power Factor >0.99 at 100% load
THDi <3% at linear load / <5% at non-linear load
Inlet Hardwire terminal
Output Voltage 208 / 220 / 230 / 240Vac & 100 / 110 / 115 / 120Vac (selectable)
Frequency Range (on Battery) 50 / 60 Hz +/- 1%
Voltage Regulation <1%
THDv for Linear-Load <2% at linear load
Crest Factor 3:1
Wave Form (on Battery) Sine wave
Outlet 1 x hardwire terminal
Parallelled Units Up to 3 x TAC-TW10KD (N+2)
Line To/From Battery 0ms
Inverter To/From Bypass 0ms
Line Mode 90% at full load with batteries fully charged
ECO Mode 93% at full load with batteries fully charged
Chemistry Sealed lead-acid
Quantity & Size 16 x 12V / 7Ah (option to expand to 20 pieces)
Recharge Time 3 hours to 90% capacity (internal batteries only)
Charging Current 1.4A
Rated Battery Voltage 192Vdc (240Vdc at 20 x 12V / 7Ah)
Emergency Power Off (EPO) Yes
Overload Protection Yes
Overcharge Protection Yes
Network / Phone / Fax Surge Suppression Yes, RJ-11/45 combo ports (1-in, 1-out)
Surge Suppression Yes
EMI / RFI Filter Yes, full time
EPO Tab Yes, emergency power off tab
MBS Yes, maintenance bypass switch to safely route electricity during maintenance and servicing
Load Segment Control Yes
ECO Mode Yes
External Battery Connector No, must purchase TAC-TW10KLD (extended runtime model) for this feature
Parallel Units Yes, up to 3 additional for N+2 or N configuration
USB Port Yes, for power management software to control and monitor the UPS conditions
RS232 Port Yes, for power management software to control and monitor the UPS conditions
Software Compatible with Windows 10/8/7/ Server 2012 R2 / 2008 R2 / Linux 32-Bit / 64-Bit / Sun Solaris / IBM Aix / Compaq True64 / SGIIRIX / FreeBSD / HP-UX / mac
Intelligent Slot Yes for SNMP, AS400, or relay card
LCD Screen Yes, for Input/Output Voltages, Battery Level, Fault, status codes, and more
Audible Alert Yes
Warranty 2-Year: Equipment and $25,000 Connected Equipment Warranties. 2-Year: Battery Warranty. See Terms of Use and Warranty pages for additional information.
Color Black
Form Factor Tower
Product Dimensions (DWH) 24.9 x 11.8 x 31.7 in / 633.2 x 300 x 805.5 mm
Product Weight 269.6 lb / 122.2 kg


Product specifications are subject to change without further notice. Maruson assumes no responsibility, and disclaims all liability, for any damages that may result from the use of this information or for any errors or omissions. Battery backup time varies with equipment, configuration, battery age, temperature, etc.
TAC-TW10KD Runtime
1250W 32 minutes   6250W 5.2minutes
2500W 15 minutes   7500W 4 minutes
3750W 11 minutes   9000W 3 minutes
5000W 6.6 minutes   10000W 3.2 minutes


TIME (Minutes)

Optional Accessories (Not Included):
TAC-TWBB932- Add-on external battery bank to expand the battery runtime. Connect up to 3 external battery banks per UPS.
NMC - Remote power management card for Tacoma series
DB25 Cables - To set up the UPS in parallel connection. Need one cable going to and from each UPS in parallel.

Download here.

User Manual
Download here.

Download here.

You must connect the USB from your UPS to your computer to use the software.

Compatible Operating Systems
Windows OS: Windows 10/ Windows 8/ Windows 7/ Windows Server 2016/ Windows Server 2012/ Windows Server 2012 R2/ Windows Server 2008/ Windows Server 2008 R2
mac OS: Mac OS 10.6/ 10.7/ 10.8/ 10.9/ 10.10/ 10.11
Linux 32-Bit and 64-Bit: Fedora 7/Redhat Enterprise 7.5/Centos 7/Open SUSE 11.4/Debian 7/Ubuntu 18.10
Virtual Machines (Agent and Client): VMware ESX/ESXi 6.5


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Find additional information on our warranty policy.