RT III Lithium USV 2 KW

The RT III Lithium can provide long bridging times due to the external lithium battery and offers an exceptionally high cycle stability with up to 6000 charge/discharge cycles.

The RT III Lithium provides an output power factor of 1.0 with a sinusoidal output voltage curve.

With the adjustable current distribution, non-critical loads can be switched off in battery mode to extend the autonomy time.

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  • UPS classification VFI-SS-111 according to IEC 62040-3
  • VFI sine wave output can be switched to
  • ECO-Mode (line-interactive)
  • Compact design of only 2 U and 4U / 5U with Lithium battery
  • Large voltage input range
  • UPS software for the common OS
  • Incl. RS232 / USB and expansion slot
  • 24 months warranty

Special feature

  • Unique energy density: High bridging times with low space requirements and weight.
  • High charge/discharge rate of the lithium battery (up to 6000)
  • Ideal for mobile applications such as mobile workstations / cradles
  • Can operate in higher ambient temperature than conventional UPS (up to 50°C)
  • Excellent power factor of 1.0
  • Battery management system integrated in the battery


ModellRT III Lithium 2 kVA
PowerPower in VA/W2000/2000
Autonomy time @ (100% / 50% load)With standard Lithium battery in Min.approx. 40
Higher autonomy timeson request
TechnologyOnline double conversionVFI-SS-111 according to IEC 62040-3
PhaseInput / Output1-phas3 / 1-phas3
InputNominal voltage configurable230, 240 VAC
Input voltage range160-300 VAC, ±5%
Input frequency range40-70 Hz (auto-sensing)
OutputOutput voltage230, 240 VAC
Voltage regulation±1%
Output frequency range47~53 Hz (@ 50 Hz) or 57~63 Hz (@ 60 Hz)
changeover timenone
Overload Capability (line mode)105~110% for 10min, 110~130% for 1min,
130~150% for 5sec
>150% immediate switchover to bypass
Overload Capability (battery mode)105~110% for 1min, 110~130% for 5sec
>130% immediate shutdown of the UPS output
Voltage formsine wave
EfficiencyNormal mode>92%
BatteryTypeLithium Ion (LiFePo4) battery with 48V, 50Ah
Life timeup to 15 years
Charging current (max)12 A
CommunicationInterfacesRS 232 or USB
Slot for further communication cards1 x for SNMP- or relay card
DisplayLC-Display and LEDs
Dimensions / WeightDimensions UPS (HxWxD in mm)
as 19” rack-mountable device
Dimensions of battery extension
(HxWxD in mm)
89x442x410 or 132x442x420
Weight ups8.3 kg
Weight Lithium battery24 kg or 32 kg
TerminalsInputIEC (16 A)
Output programmable in segments8 x IEC C13 (10A)
Environmental conditionsTemperature0~50°C
Humidity20~90% (non-condensing)
Acoustic Noise<50 dB (1 m)
Safety / EnclosureSafety (ups)IEC/EN62040-1, IEC/EN60950-1
EMCIEC/EN62040-2, IEC61000-4-2, IEC61000-4-3, IEC61000-4-4,
IEC61000-4-5, IEC61000-4-6, IEC61000-4-8
Certification (ups)CE
Certifications Lithium batteryTüV / CE / UN38.8

Options for extended communication and maximum availability:

  • SNMP/web or relay card for monitoring in network environments
  • Additional battery modules to provide an uninterruptible power supply for up to several hours
  • External manual bypass for scheduled UPS maintenance or UPS replacement without shutdown
  • Special designs available for industrial applications (connections / special housings, etc.)
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