R91 Three-Phase Online UPS

  • SNMP-R90 External Web/SNMP Card

20kVA/18kW

415/240VAC, 400/230VAC, 380/220VAC Three-Phase

18kW of efficient and reliable power in just 5U of rack space

Xtreme Power R91 provides industry leading power density and efficiency. Continuous online double conversion or ECO mode can be user selected. The R91 programmable battery charger and advanced rectifier power walk-in features help optimize compatibility with numerous source types and ratings.

The R91 UPS is available in many custom configurations including parallel tie with up to 4 modules, 480V input, maintenance bypass, and output distribution.

Product Snapshot

  • Voltage can be configured for 415/240V, 400/230V, or 380/220V
  • Parallel up to 4 modules for Capacity or Redundancy
  • Online double conversion or ECO mode operation
  • Programmable Rectifier power walk-in
  • UL 1778, CE, FCC A, RoHS

Six advantages of modular uninterruptible power supply (UPS) over conventional UPS systems

MODEL NUMBER R91-20K 
INPUT Capacity 20kVA/18kW
Phase Three-phase + neutral + ground
Voltage range 210–478VAC*
Frequency 40–70Hz
Power factor ≥ 0.99
OUTPUT Voltage 415/240VAC, 380/220VAC, 400/230VAC (selectable)
Overload protection 110% for 60 min; 125% for 10 min; 150% for 1 min; > 150% immediate
Voltage regulation ± 2%
Efficiency Online mode up to 94%; ECO mode up to 99%
PHYSICAL Dimensions (W x D x H) 443 x 580 x 131 mm (17.4 x 22.8 x 5.2 in)
Weight 31 kg (68.4 lbs)
ENVIRONMENT Operating temperature 0–40°C (32–104°F)
Altitude 11,500 ft above sea level
Humidity 0–95% non-condensing
Storage temperature -25–55°C (-13–131°F) non-condensing (UPS)
OPTIONAL BATTERY PACKS Model BP-XR4U480A BP-XR2U480A
Dimensions (W x D x H) 17.4 x 33.9 x 7.0 in (4U) 17.4 x 44.0 x 3.5 in (2U)
Unit/shipping weight 280 lbs/300 lbs 195 lbs/215 lbs
Charger amps 0A-6A 
Battery configuration Hot Swappable Battery Modules Battery Compartments 
APPROVALS UL 1778, FCC A, CE, RoHS
WARRANTY 2 years depot warranty (USA only)
COMMUNICATIONS INTERFACE RS232, RS485, EPO, parallel port, external Web/SNMP (optional)
INCLUDED IN BOX User manual, RS232, shelf kit, Muser monitoring software

*Depending on load level