UPS Keor DK 311354 15000 VA, 3U

Product Code: 311354
Product Line: KEOR DK
Product Type: Tower 3U - 15kVA
Brand: Legrand

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Legrand Keor DK 311354 UPS Description

The Legrand Keor DK 311354 is a 15 kVA (15 kW) rack-mounted UPS built with On-line Double Conversion (VFI-SS-111) technology from Legrand (France). Designed in a compact 3U rack format, it provides reliable and stable power for mission-critical systems such as servers, network devices, CCTV systems, data centers, and industrial equipment, ensuring continuous operation even during power outages.

Key Features

On-line Double Conversion Technology (VFI-SS-111): continuously converts AC → DC → AC, guaranteeing a stable and clean output, fully isolated from input disturbances and voltage fluctuations.
High Power Output: delivers 15 kVA / 15 kW with unity power factor (1.0) — providing 100% real power to connected loads.
High Efficiency: up to 96–98%, reducing energy loss and heat dissipation for improved operational economy.
Flexible Battery Configuration: “NO BATT” design allows connection to one or more external battery cabinets for customized backup time.
Compact 3U Rack Design: only 132 mm high, 440 mm wide, and 535 mm deep, ideal for network cabinets and professional server rooms.
Smart Monitoring Interface: equipped with a 4.3” touchscreen LCD and LED status bar, plus USB, RS-232, and SNMP ports for advanced remote management.
Comprehensive Protection: safeguards against overload, overvoltage, short circuit, and deep battery discharge.
Versatile Applications: suitable for data centers, IT and telecom systems, CCTV, audio, and other equipment requiring uninterrupted power.

Technical Specifications

Parameter	Specification
Nominal Power (VA)	15,000
Active Power (W)	15,000
Technology	On-line double conversion (VFI-SS-111)
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 Support	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