Product comparison · 2 uninterruptible power supplies (upss)

CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA vs Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA

36specifications compared
27differ
9identical
37known for one product only

Key differences

The CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA has 6.5 kVA more output power capacity than the Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA (8 kVA vs 1.5 kVA). The CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA has 6,650 W more output power than the Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA (8000 W vs 1350 W). The CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA has 35 V more input operation voltage (min) than the Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA (110 V vs 75 V). UPS topology: Double-conversion (Online) on the CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA, Line-Interactive on the Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA. Input frequency: 50/60 Hz on the CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA, 55/65 Hz on the Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA.

UPS topology
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:Double-conversion (Online)
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:Line-Interactive
Output power capacity
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:8 kVA
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:1.5 kVA
Output power
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:8000 W
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:1350 W
Input operation voltage (min)
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:110 V
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:75 V
Input operation voltage (max)
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:300 V
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:146 V
Input frequency
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:50/60 Hz
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:55/65 Hz
Output operation voltage (min)
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:208 V
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:100 V
Output operation voltage (max)
- OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA:240 V
- Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA:125 V

Side by side

Differences highlightedShow differences only

Comparison of OLS8KERT5UM, PSI5-1500RT120LITAA
73 specifications	A CyberPower OLS8KERT5UM uninterruptible power supply (UPS) Double-conversion (Online) 8 kVA Model OLS8KERT5UM View product	B Vertiv Liebert PSI5-1500RT120LITAA uninterruptible power supply (UPS) Line-Interactive 1.5 kVA Model PSI5-1500RT120LITAA View product
Features8 differ
UPS topologyDiffers	Double-conversion (Online)	Line-Interactive
Output power capacityDiffers	8 kVA	1.5 kVA
Output powerDiffers	8000 W	1350 W
Waveform	Pure sine	Pure sine
Input operation voltage (min)Differs	110 V	75 V
Input operation voltage (max)Differs	300 V	146 V
Input frequencyDiffers	50/60 Hz	55/65 Hz
Output operation voltage (min)Differs	208 V	100 V
Output operation voltage (max)Differs	240 V	125 V
Output frequencyKnown for one	50/60 Hz	Unknown — not stated by the source
Maximum currentKnown for one	36.4 A	Unknown — not stated by the source
Surge energy ratingKnown for one	1335 J	Unknown — not stated by the source
Response timeKnown for one	0 ms	Unknown — not stated by the source
Power factorKnown for one	1	Unknown — not stated by the source
Input power factorKnown for one	0.99	Unknown — not stated by the source
Crest factorKnown for one	3:1	Unknown — not stated by the source
ECO modeKnown for one	Yes	Unknown — not stated by the source
Emergency Power Off (EPO)	Yes	Yes
Output voltage Total Harmonic Distortion (THD)Known for one	3%	Unknown — not stated by the source
EMI/RFI noise filteringKnown for one	Yes	Unknown — not stated by the source
Surge protection	Yes	Yes
Power protection featuresKnown for one	Overload	Unknown — not stated by the source
Audible alarm(s)Known for one	Yes	Unknown — not stated by the source
Audible alarm modesKnown for one	Alarm when on battery, Fault, Low battery alarm, Overload alarm	Unknown — not stated by the source
Automatic Voltage Regulation (AVR)Known for one	Unknown — not stated by the source	Yes
EfficiencyKnown for one	Unknown — not stated by the source	97.1%
Noise levelKnown for one	Unknown — not stated by the source	45 dB
Ports & interfaces2 differ
AC outlet typesDiffers	C13 coupler, C19 coupler	NEMA 5-15R
AC outlets quantityDiffers	8 AC outlet(s)	6 AC outlet(s)
USB port	Yes	Yes
USB 2.0 ports quantity	1	1
Serial interface typeKnown for one	RS-232	Unknown — not stated by the source
Serial ports quantityKnown for one	1	Unknown — not stated by the source
Power plugKnown for one	Unknown — not stated by the source	NEMA 5-15P
USB port typeKnown for one	Unknown — not stated by the source	USB Type-B
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	2
Cabling technologyKnown for one	Unknown — not stated by the source	10/100Base-T
Emergency Power Off (EPO) connectorKnown for one	Unknown — not stated by the source	Yes
Battery4 differ
Battery technologyDiffers	Sealed Lead Acid (VRLA)	Lithium-Ion (Li-Ion)
Number of batteries supportedKnown for one	10	Unknown — not stated by the source
Typical backup time at full loadDiffers	4.6 min	7.5 min
Typical backup time at half loadDiffers	15.2 min	17.7 min
Battery recharge timeDiffers	4 h	2 h
Charging currentKnown for one	4 A	Unknown — not stated by the source
Design1 differ
Form factor	Rackmount/Tower	Rackmount/Tower
Product colour	Black	Black
Housing materialKnown for one	Metal	Unknown — not stated by the source
Rack capacityDiffers	5U	2U
Display type	LCD	LCD
LED indicatorsKnown for one	Operation	Unknown — not stated by the source
Cable lengthKnown for one	Unknown — not stated by the source	3 m
Operational conditions3 differ
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)Differs	-15 - 45 °C	-15 - 50 °C
Operating relative humidity (H-H)Differs	0 - 95%	20 - 90%
Storage relative humidity (H-H)Known for one	0 - 95%	Unknown — not stated by the source
Operating altitudeDiffers	0 - 1000 m	0 - 3000 m
Non-operating altitudeKnown for one	0 - 15000 m	Unknown — not stated by the source
Packaging contentidentical
Cables includedKnown for one	USB cable	Unknown — not stated by the source
Rack mount kitKnown for one	Unknown — not stated by the source	Yes
ManualKnown for one	Unknown — not stated by the source	Yes
Certificates1 differ
CertificationDiffers	CE, RoHS	UL 1778, c-UL, NOM, FCC Part 15, Class B
Compliance certificatesKnown for one	Unknown — not stated by the source	REACH, RoHS, WEEE
Weight & dimensions4 differ
WidthDiffers	433 mm	438 mm
DepthDiffers	661 mm	411 mm
HeightDiffers	213.5 mm	86 mm
WeightDiffers	74 kg	28.3 kg
Packaging data4 differ
Package widthDiffers	600 mm	258 mm
Package depthDiffers	800 mm	582 mm
Package heightDiffers	650 mm	570 mm
Package weightDiffers	81 kg	42.1 kg
Logistics dataidentical
Harmonized System (HS) codeKnown for one	8504408690	Unknown — not stated by the source
Country of originKnown for one	China	Unknown — not stated by the source
Safety regulation & standardsidentical
SafetyKnown for one	Unknown — not stated by the source	UL 1642 (LiFe cells), UL 1973 (LiFe pack), UL 1778, CSA 22.2 no. 107.3

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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