UPS Keor DK 311350 5000 VA, 2U

Product Code: 311350
Product Line: KEOR DK
Product Type: Tower 2U - 5kVA
Brand: Legrand

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Legrand Keor DK 311350 UPS

The Legrand Keor DK 311350 is an On-line Double Conversion (VFI-SS-11) UPS with a rated capacity of 8,000 VA / 8,000 W (8 kVA). It features a Convertible Tower / 19” Rack (2U) design, allowing flexible installation either as a standalone tower or in a rack cabinet. This UPS is ideal for IT systems, network devices, and sensitive equipment requiring a clean, stable, and uninterrupted power supply.

Key Features

On-line Double Conversion technology (VFI-SS-11): delivers a pure, clean, and perfectly stable sine wave output for sensitive loads.
High efficiency up to 96%, reducing energy losses and operating costs.
Power factor PF = 1.0 (kVA = kW): provides full usable power, ideal for high-performance IT and electronic equipment.
Wide input voltage range (176–280V): ensures stable operation in fluctuating power conditions, suitable for Vietnam’s grid.
Convertible Tower / Rack 19” design: easy to install in a rack or as a standalone unit.
3.5” touch screen with LED status bar: offers intuitive monitoring and simple configuration.
Compatible with VRLA and Lithium batteries, supports extended backup time with external battery cabinets.
Parallel operation (N+1): allows power scaling or redundancy for critical systems.
Hot-swappable batteries: enable maintenance without shutting down connected equipment.
Comprehensive communication ports: USB, RS232, ROO, SNMP, Dry Contact, and EPO for remote monitoring and management.
Low noise (, generator compatible, and durable design with anti-corrosion coating for reliable long-term operation.

Technical Specifications

Parameter	Specification
Rated Power	8,000 VA / 8,000 W
Technology	On-line Double Conversion (VFI-SS-11)
Output Waveform	Pure Sine Wave
Design	Convertible Tower and 19” Rack
Input Voltage	Single-phase 230V
Input Frequency	50/60Hz ±5% (auto-sensing)
Input Voltage Range	176V – 280V
Input THD	< 5%
Input Power Factor	> 0.99
Output Voltage	230V ±1%
Output Frequency	50/60Hz ±0.1% (configurable via LCD)
Efficiency	Up to 96%
Crest Factor	3:1
Output THD	< 3% (linear load)
Voltage Tolerance	±1%
Automatic Bypass	Yes
Maintenance Bypass	Optional
Backup Time	≈ 5 minutes
Extended Battery Option	Supported
Display	3.5” Touch Screen + LED Status Bar
Communication Ports	ROO, USB, RS232
SNMP Slot	Available
Dry Contacts	Included
Parallel Operation	Supported
Dimensions (W×H×D)	440 × 176 (4U) × 700 mm
Weight	58 kg
Battery Module Size	440 × 88 (2U) × 880 mm
Operating Temperature	0 – 40°C
Noise Level	< 50 dBA