10kVA, 15kVA, 20kVA
208/120 VAC Three-Phase
Compact, efficient, and powerful three-phase UPS protection for edge facilities, small data centers, and industrial applications.
The Xtreme Power Conversion E91 Series is a compact centralized three-phase online double-conversion UPS platform designed to support localized facility infrastructure across healthcare, industrial automation, commercial electrical systems, telecommunications, and distributed IT environments.
The integrated cabinet architecture with internal VRLA batteries and optional matching external battery cabinets supports predictable lifecycle maintenance planning and simplified deployment in space-constrained electrical-room installations.
Compact three-phase UPS platforms in this capacity class are commonly deployed where localized infrastructure requires conditioned power protection without centralized data-center-scale UPS systems.
Typical applications include:
These deployments typically prioritize compact footprint, predictable maintenance planning, and straightforward service accessibility.
The E91 platform utilizes a compact centralized UPS cabinet architecture with integrated internal VRLA batteries to support simplified facility deployment and established lifecycle service models.
Optional matching external battery cabinets allow runtime expansion where infrastructure planning requires extended backup duration without transitioning to modular UPS architecture.
| Capacity | Typical Deployment Context | Battery Strategy |
| 10 kVA | Small facility electrical rooms | Internal batteries with optional expansion cabinets |
| 15 kVA | Imaging / automation infrastructure | Internal batteries with optional expansion cabinets |
| 20 kVA | Commercial facility deployments | Internal batteries with optional expansion cabinets |
Compare E91 with alternative three-phase UPS platforms:
https://xpcc.com/e91-ups-comparisons/
For facility deployments requiring higher centralized capacity within the same architectural platform:
Explore E91 expanded capacity platform (30–40 kVA):
https://xpcc.com/products/e91_30-40k/
Centralized VRLA-based UPS architectures typically follow established maintenance planning models involving periodic battery replacement and routine service inspection intervals.
Infrastructure planners frequently evaluate lifecycle service predictability, electrical-room deployment simplicity, and long-term maintenance economics when selecting compact facility UPS platforms.
Detailed electrical and mechanical specifications are available in the specifications tab.
Xtreme Power Conversion supports facility engineers, infrastructure consultants, and system integrators with UPS capacity planning, lifecycle maintenance modeling, and deployment architecture guidance.
Phone: 800-582-4524
Email: sales@xpcc.com
| MODEL NUMBER | E91-10K | E91-15K | E91-20K | |
| CAPACITY | Power rating | 10kVA/10kW | 15kVA/15kW | 20kVA/20kW |
| INPUT | Voltage / Range | 208Y/120VAC or 220Y/127 +20/-15% VAC three-phase | ||
| Frequency | 46–54Hz or 56-64Hz | |||
| OUTPUT | Voltage / Frequency | 208/120VAC or 220/127VAC / 50/60±0.1% | ||
| Overload capacity | Up to 110% for 1 hour, 130% for 1 min, >130% for 1 sec | |||
| Efficiency | up to 94% online mode or 98% ECO mode | |||
| INTERNAL BATTERY | Battery type | Sealed maintenance-lead acid | ||
| Battery quantity | (40) 12V/9AH | (60) 12V/9AH | ||
| Charging current | 2A-12A | 4A, 8A, 12A | ||
| PHYSICAL | Dimensions (W x D x H) | 9.9″ x 26.3″ x 32.3″ | 11.9” x 34” x 40.2” | |
| Weight | 315 lbs | 504 lbs | 510 lbs | |
| OPTIONALBATTERY PACK | Model | EBP09-2 / EBP09-5 | ||
| Battery quantity and size | (40) 12V 9AH / (100) 12V 9AH | |||
| Weight | 310 lbs / 670 lbs | |||
| Dimensions (W x D x H) | 11.9″ x 34″ x 40.2″ | |||
| OPTIONAL PDU | Model | E91-PDU1 / E91-PDU2 | ||
| Output receptacles | (4) L21-20R each protected by a 20A breaker / (4) L21-30R each protected by a 30A breaker | |||
| ENVIRONMENT | Operating temperature | 32–104°F (0–40°C)* | ||
| Audible noise | <60dB for 10kVA; <65dB | |||
| Altitude | 5,200 ft above sea level* | |||
| APPROVALS | UL, cUL, FCC, Energy Star 2.0 | |||
| WARRANTY | 2 years warranty (USA and Canada) | |||
| COMMUNICATIONS INTERFACE | RS-232, EPO, USB, intelligent slot for optional cards (Web/SNMP, Relay/dry contact) | |||
| INCLUDED IN BOX | User manual, RS-232 communication cable, USB cable | |||
| AVAILABLE OPTIONS | External maintenance bypass, output distribution, external battery cabinets | |||