UPS Legrand KEOR DK 311339 3000 (2U)

Product Code: 311339
Product Line: KEOR DK
Product Type: Tower 2U - 3kVA
Brand: Legrand

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Legrand KEOR DK 311339

The Legrand KEOR DK 311339 (3kVA / 3kW - 2U) is a single-phase Online Double Conversion UPS (VFI-SS-11) from Legrand’s premium KEOR DK series, designed to deliver high-performance and reliable power protection for IT infrastructure, security systems, servers, and industrial applications that require long backup time and high availability.

Key Features

True 3kW power output (PF = 1): maximum power efficiency for modern IT equipment.
On-line Double Conversion technology (VFI-SS-11): provides complete protection against voltage fluctuations, electrical noise, and brownouts.
Slim 2U rack/tower convertible design: saves space and fits shallow-depth 19” racks.
No internal battery: ready for external battery cabinet connection for customizable runtime extension.
Touchscreen LCD + LED status bar: features auto-rotating display for both rack and tower positions.
High efficiency >92%, ECO mode up to 98%: reduces power losses and operating costs.
Comprehensive communication interfaces: USB, RS-232, ROO, optional SNMP/BMS card.
Full protection suite: EPO, backfeed protection, cold start, and overload protection.
Generator compatible: ensures stable operation even in harsh environments.

Technical Specifications

Specification	Details
Rated power (VA)	3000 VA
Active power (W)	3000 W
Technology	On-line Double Conversion (VFI-SS-11)
Output waveform	Pure sine wave
Installation type	Convertible tower / 19" rack
Input voltage	230 V
Input frequency	50/60 Hz ± 5% autosensing
Input voltage range (full load)	176 V – 280 V
Input current THD	≤ 5%
Input power factor	> 0.99
Output voltage	230 V ± 1%
Output frequency	50/60 Hz (configurable via LCD) ± 0.1%
Efficiency	Up to 93%
Crest factor	3:1
Output voltage THD	< 3% (linear load)
Output voltage tolerance	± 1%
Automatic bypass	Yes
External maintenance bypass	Optional
Standard backup time	-
Extended runtime capability	Yes
Battery charging current	8A
Display	Touchscreen with LED status bar
Communication ports	ROO, USB, RS232
Remote control	Supported
SNMP network interface	Available
Backfeed protection	Yes
Emergency Power Off (EPO)	Yes
Dry contact (relay output)	Yes, integrated
Parallel mode	Not applicable
Dimensions (W x H x D)	440 x 88 (2U) x 640 mm
Net weight	-
External battery cabinet dimensions	440 x 88 (2U) x 583 mm
Operating temperature	0°C – 40°C
Protection rating	IP 20
Relative humidity	< 95%, non-condensing
Noise level (at 1m)	< 48 dBA
Compliance standards	EN 62040-1, EN 62040-2, EN 62040-3