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Product comparison · 2 uninterruptible power supplies (upss)

Ewent EW3940 uninterruptible power supply (UPS) Line-Interactive 0.65 kVA vs Vertiv Liebert LI34121CT32 uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA

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  • 12specifications compared
  • 9differ
  • 3identical
  • 53known for one product only

Key differences

  • UPS topology
    • Line-Interactive
    • Double-conversion (Online)
  • Output power capacity
    • 0.65 kVA
    • 3 kVA
  • Output power
    • 390 W
    • 2400 W
  • AC outlets quantity
    • 4 AC outlet(s)
    • 5 AC outlet(s)
  • Battery capacity
    • 7 Ah
    • 9 VAh
  • Width
    • 185 mm
    • 190 mm
  • Depth
    • 275 mm
    • 421 mm
  • Height
    • 95 mm
    • 336 mm

Side by side

Differences highlightedShow differences only
65 specifications
A

Ewent

EW3940 uninterruptible power supply (UPS) Line-Interactive 0.65 kVA

Model EW3940

View product
B

Vertiv

Liebert LI34121CT32 uninterruptible power supply (UPS) Double-conversion (Online) 3 kVA

Model LI34121CT32

View product
Features3 differ
UPS topologyDiffersLine-InteractiveDouble-conversion (Online)
Output power capacityDiffers0.65 kVA3 kVA
Output powerDiffers390 W2400 W
WaveformKnown for oneSine
Input operation voltage (min)Known for one110 V
Input operation voltage (max)Known for one300 V
Input frequencyKnown for one50/60 Hz
Output operation voltage (max)Known for one240 V
Output frequencyKnown for one50/60 Hz
Output voltage regulationKnown for one1%
Response timeKnown for one0 ms
Number of input phasesKnown for one1
Number of output phasesKnown for one1
Power factorKnown for one0.8
Output power factorKnown for one0.8
Emergency Power Off (EPO)Known for oneYes
Noise levelKnown for one50 dB
Automatic Voltage Regulation (AVR)Known for oneYes
Power protection featuresKnown for oneBattery discharge, Overcharge, Short circuit
Ports & interfaces1 differ
AC outlet typesKnown for oneC13 coupler, IEC 320, Terminal, Type F
Power plugKnown for oneC20 coupler
AC outlets quantityDiffers4 AC outlet(s)5 AC outlet(s)
USB portKnown for oneYes
Serial interfaceKnown for oneYes
Serial interface typeKnown for oneRS-232
Serial ports quantityKnown for one2
Battery1 differ
Battery technologyKnown for oneSealed Lead Acid (VRLA)
Battery capacityDiffers7 Ah9 VAh
Number of batteries supportedKnown for one6
Typical backup time at half loadKnown for one11 min
Battery recharge timeKnown for one4 h
Hot-swap batteryKnown for oneNo
Typical backup time at full loadKnown for one20 min
Designidentical
Form factorKnown for oneTower
Display typeKnown for oneLCD
International Protection (IP) codeKnown for oneIP20
LED indicatorsKnown for oneStatus
Operational conditionsidentical
Storage temperature (T-T)Known for one-20 - 50 °C
Operating relative humidity (H-H)Known for one20 - 90%
Storage relative humidity (H-H)Known for one20 - 90%
Operating altitudeKnown for one0 - 1000 m
Certificatesidentical
Compliance certificatesKnown for oneRoHS
CertificationKnown for oneCE
Safety regulation & standardsidentical
SafetyKnown for oneIEC/EN/AS 62040-1-1
Weight & dimensions4 differ
WidthDiffers185 mm190 mm
DepthDiffers275 mm421 mm
HeightDiffers95 mm336 mm
WeightDiffers4.5 kg27.5 kg
Packaging dataidentical
Package widthKnown for one320 mm
Package depthKnown for one560 mm
Package heightKnown for one460 mm
Package weightKnown for one27.5 kg
Logistics dataidentical
Harmonized System (HS) codeKnown for one85078000
Other featuresidentical
Battery typeKnown for oneVRLA
Output connectionsKnown for one3 x IEC320 C13 + 2 x Schuko + terminals
Input connection typeKnown for oneIEC320 C20
Dimensions (WxDxH)Known for one190 x 421 x 336 mm
Nominal input voltageKnown for one220-240 V
Nominal output voltageKnown for one230 V
Overload protectionKnown for oneYes
Package dimensions (WxDxH)Known for one320 x 560 x 460 mm
Non-operating relative humidity (non-condensing)Known for one20 - 90%

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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