UPS Keor DK 311353 10000 VA, 3U

Product Code: 311353
Product Line: KEOR DK
Product Type: Tower 3U - 10kVA
Brand: Legrand

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Legrand Keor DK 311353 UPS Description

The Legrand Keor DK 311353 is a 10 kVA (10 kW) rack-mounted UPS designed in a compact 3U form factor, ideal for critical systems requiring reliable and continuous power. Using On-line Double Conversion (VFI-SS-11) technology, it ensures stable, clean power output, fully isolated from input disturbances — providing optimal protection for servers, networks, data centers, and other sensitive electronic equipment.

Key Features

On-line Double Conversion Topology (VFI): continuously converts AC → DC → AC to deliver pure, stable output power — unaffected by input voltage fluctuations or interference.
Rated Power: 10 kVA / 10 kW with output power factor = 1, ensuring full active power delivery to connected loads.
High Efficiency: up to 96% in on-line mode and approximately 98% in ECO mode for energy savings.
Flexible Battery Options: supports VRLA or lithium batteries; model 311353 is a “NO BATT” version (supplied without batteries), allowing external battery cabinets for extended backup time.
Compact 3U Rack Design: dimensions 440 × 132 × 535 mm, perfect for standard 19" rack installations.
Smart Communication: equipped with USB, RS-232, SNMP, and BMS interfaces for monitoring and remote management.
Wide Input Voltage Range: 176–280 V (single-phase) or 305–485 V (three-phase) ensures stable operation even in unstable mains conditions.
Superior Output Quality: very low output waveform distortion (THD < 2% with linear load) for sensitive and high-precision equipment.

Technical Specifications

Parameter	Specification
Nominal Power (VA)	10,000
Active Power (W)	10,000
Technology	On-line double conversion (VFI-SS-11)
Output Waveform	Pure sine wave
Installation Type	19" Rack
Input Voltage	1-phase 230 V / 3-phase 400 V
Input Frequency	50/60 Hz ±5% (auto sensing)
Input Voltage Range (full load)	176–280 V (1-phase) / 305–485 V (3-phase)
Input Current THD	< 3%
Input Power Factor	> 0.99
Output Voltage	230 V / 400 V ±1%
Output Frequency	50/60 Hz (configurable via LCD) ±0.1%
Efficiency	Up to 96%
Crest Factor	3 : 1
Output Voltage THD	< 2% (linear load)
Output Voltage Tolerance	±1%
Maintenance Bypass	Optional
Extended Backup Capability	Supported
Backup Time	Depends on external battery cabinet
Display	4.3" touchscreen with LED status bar
Communication Ports	RS-232, BMS
Network Interface (SNMP)	Integrated
Emergency Power Off (EPO)	Yes
Dry Contact Relays	Built-in
Parallel Operation	Supported
UPS Dimensions (W × H × D)	440 × 132 (3U) × 535 mm
Net Weight	20 kg
Battery Cabinet Dimensions (W × H × D)	440 × 132 (3U) × 570 mm
Operating Temperature	0 – 40 °C
Protection Degree	IP 20
Relative Humidity	≤ 95%, non-condensing
Noise Level (1 m)	≤ 55 dB
Compliance Standards	EN 62040-1, EN 62040-2, EN 62040-3