Xtreme – E91-10000 – 10 kVA – Three Phase Online UPS

Xtreme Power E91 Series UPS — 10 kW, 208/120V Three-Phase, Unity Power Factor

The Xtreme Power E91 Series is a three-phase, true online double-conversion UPS designed to protect
edge facilities, small data centers, network closets, and industrial control systems. Available in
10 kW ratings at 208/120 VAC three-phase, the E91 delivers unity power factor (1.0 PF)
output—providing up to 25 % more real power than legacy 0.8 PF units, without increasing footprint.

With Energy Star 2.0 certification, up to 94 % efficiency in online mode and 98 % in ECO mode, the E91
keeps operating costs low while ensuring continuous isolation from input disturbances. A 4.3″ color touch LCD
offers intuitive access to a one-line diagram, alarms, and real-time power data, making it easy to monitor and
manage protection for racks, PLCs, and high-density IT loads.

Key Features & Benefits

• Unity power factor (1.0 PF) — Delivers full kW rating for high-density servers and industrial loads.
• True online double conversion — Provides continuous, clean output power independent of input voltage and frequency variations.
• Energy Star 2.0 certified — Meets federal efficiency standards for reduced energy and cooling costs.
• High overload capability — Supports 110 % load for 60 minutes, 130 % for 1 minute, and 150 % for 5 seconds.
• Dual or single input — Field-configurable rectifier and bypass inputs to match site wiring and redundancy needs.
• 4.3″ color touch LCD — Displays one-line diagram, system status, alarms, and metering at a glance.
• Frequency converter mode — Output can be locked to 50 Hz or 60 Hz for international or mixed-frequency deployments.
• High efficiency — Up to 94 % in double-conversion mode and 98 % in ECO mode.
• External battery packs — Scalable runtime to support longer backup intervals.
• Maintenance bypass ready — Supports manual transfer to utility for service without downstream interruption.
• UL, cUL, FCC compliant — Tested to global safety and emissions standards.
• 2-year warranty — Covers both electronics and batteries in the U.S. and Canada.

Applications

• Edge facilities & network closets — Compact three-phase protection for edge compute, switches, and routers.
• Small data centers & server rooms — Reliable backup for racks, storage arrays, and virtualization clusters.
• Industrial control & automation — Clean, regulated power for PLCs, SCADA, sensors, and motor controls.
• Broadcast & Pro AV — Continuous power for studios, editing suites, encoders, and transmitters.
• Retail & hospitality — Protect POS systems, kiosks, menu boards, and back-office servers from downtime.
• Healthcare & laboratory — Stable power for imaging systems, analyzers, and process control electronics (non-life-support).

At-a-Glance Specifications

Contact us for configuration assistance, runtime calculations with external battery cabinets, or help comparing the E91
against your existing three-phase UPS fleet.