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Product comparison · 2 uninterruptible power supplies (upss)

CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot vs Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA

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  • 35specifications compared
  • 23differ
  • 12identical
  • 41known for one product only

Key differences

The CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot has 2 kVA more output power capacity than the Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA (3 kVA vs 1 kVA). The CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot has 1,800 W more output power than the Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA (2700 W vs 900 W). The Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA has 10 V more input operation voltage (min) than the CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot (90 V vs 80 V). Output frequency: 50/60 Hz on the CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot, 50 Hz on the Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA. Power protection features: Input fuse, Overload on the CyberPower Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot, Overload, Overcharge, Overdischarge on the Dahua Technology DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA.

  • Output power capacity
    • 3 kVA
    • 1 kVA
  • Output power
    • 2700 W
    • 900 W
  • Input operation voltage (min)
    • 80 V
    • 90 V
  • Output operation voltage (max)
    • 240 V
    • 230 V
  • Output frequency
    • 50/60 Hz
    • 50 Hz
  • Maximum current
    • 13.04 A
    • 12 A
  • Input power factor
    • 0.99
    • 0.9
  • AC outlets quantity
    • 7 AC outlet(s)
    • 3 AC outlet(s)

Side by side

Differences highlightedShow differences only
76 specifications
A

CyberPower

Online S Series Online Double Conversion USV 3000VA/2700WTower, ECO Mode, LCD, USB, Smart-Slot

Model OLS3KECR

View product
B

Dahua Technology

DH-PFM3355-1000L uninterruptible power supply (UPS) Double-conversion (Online) 1 kVA

Model DH-PFM3355-1000L

View product
Features9 differ
UPS topologyDouble-conversion (Online)Double-conversion (Online)
Output power capacityDiffers3 kVA1 kVA
Output powerDiffers2700 W900 W
WaveformPure sinePure sine
Input operation voltage (min)Differs80 V90 V
Input operation voltage (max)300 V300 V
Input frequency50/60 Hz50/60 Hz
Output operation voltage (min)Known for one208 V
Output operation voltage (max)Differs240 V230 V
Output frequencyDiffers50/60 Hz50 Hz
Output voltage regulationKnown for one1%
Automatic Voltage Regulation (AVR)Known for oneYes
Maximum currentDiffers13.04 A12 A
Surge energy ratingKnown for one590 J
Heat dissipationKnown for one1139 BTU/h
Efficiency (ECO mode)Known for one97%
Input power factorDiffers0.990.9
Output power factor0.90.9
Crest factorKnown for one3:1
ECO modeKnown for oneYes
Emergency Power Off (EPO)Known for oneYes
Overload capacity (1 minute)Known for one120%
Overload capacity (10 seconds)Known for one120%
Output voltage Total Harmonic Distortion (THD)Known for one5%
EMI/RFI noise filteringKnown for oneYes
Surge protectionKnown for oneYes
Power protection featuresDiffersInput fuse, OverloadOverload, Overcharge, Overdischarge
Audible alarm(s)YesYes
Audible alarm modesDiffersAlarm when on battery, Low battery alarm, Overload alarm, Fault, Battery replacementAlarm when on battery, Overload alarm, Low battery alarm, Fault
Socket circuit breakerKnown for oneYes
Response timeKnown for one4 ms
Ports & interfaces1 differ
AC outlet typesKnown for oneType F, C13 coupler, Terminal
Power plugKnown for oneType F
AC outlets quantityDiffers7 AC outlet(s)3 AC outlet(s)
USB portKnown for oneYes
USB port typeUSB Type-BUSB Type-B
RS-232 ports11
Emergency Power Off (EPO) connectorKnown for oneYes
USB 2.0 ports quantityKnown for one1
Ethernet LAN (RJ-45) portsKnown for one1
Battery2 differ
Battery replacement accessibilityKnown for oneProfessional only
Battery technologyDiffersSealed Lead Acid (VRLA)Lead-Acid
Battery capacityKnown for one9 Ah
Battery voltageDiffers12 V72 V
Number of batteries supportedKnown for one6
Typical backup time at full loadKnown for one3 min
Typical backup time at half loadKnown for one12.7 min
Battery recharge timeKnown for one4 h
Replacement battery cartridgeKnown for oneBPS72V40AC
Design3 differ
Form factorDiffersTowerRackmount
Product colourDiffersBlackBlack, Grey
Housing materialDiffersMetalMetal, Plastic
Cable length1.5 m1.5 m
Display typeLCDLCD
Cooling typeKnown for oneActive
LED indicatorsKnown for oneYes
Operational conditions3 differ
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Storage temperature (T-T)Differs-20 - 50 °C-15 - 55 °C
Operating relative humidity (H-H)Differs0 - 95%0 - 90%
Storage relative humidity (H-H)Differs0 - 95%0 - 90%
Operating altitudeKnown for one0 - 1500 m
Non-operating altitudeKnown for one0 - 1500 m
Packaging content1 differ
Cables includedDiffersUSB cableRS-232, Input power cable
ManualYesYes
Rack mount kitKnown for oneYes
Certificatesidentical
Compliance certificatesKnown for oneCE, EAC, UKCA, RoHS
CertificationKnown for oneCE LVD: EN IEC 62040-1: 2019+A11: 2021; CE EMC: EN IEC 62040-2: 2018; EN 62040-2: 2006; EN IEC 61000-3-2: 2019+A2: 2024; EN 61000-3-3: 2013+A2: 2021
Weight & dimensions4 differ
WidthDiffers155 mm482.6 mm
DepthDiffers341 mm429.2 mm
HeightDiffers400 mm88 mm
WeightDiffers25 kg7.4 kg
Other featuresidentical
BypassKnown for oneGreenPower UPS
Packaging dataidentical
Package widthKnown for one570 mm
Package depthKnown for one540 mm
Package heightKnown for one185 mm
Package weightKnown for one10.2 kg

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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