30kVA, 40kVA
208/120 VAC Three-Phase
High-efficiency, space-saving three-phase UPS 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 expanded facility infrastructure in healthcare, industrial, commercial, 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 electrical-room installations where modular scalability is not required but higher centralized capacity is needed.
Three-phase UPS platforms in this capacity class are commonly deployed where facility infrastructure requires higher localized conditioned power protection without large centralized data-center UPS architecture.
Typical applications include:
These deployments typically prioritize centralized capacity density, 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.
This architectural approach is commonly selected where infrastructure planners prioritize deployment predictability, electrical-room integration efficiency, and conventional lifecycle maintenance frameworks.
Capacity class selection is typically driven by infrastructure load profile, deployment environment, and runtime planning requirements.
| Capacity | Typical Deployment Context | Battery Strategy |
| 30 kVA | Larger imaging and industrial electrical rooms | Internal batteries with optional expansion cabinets |
| 40 kVA | Commercial facility infrastructure nodes | Internal batteries with optional expansion cabinets |
Compare E91 with alternative three-phase UPS platforms:
https://xpcc.com/e91-ups-comparisons/
For facility deployments requiring smaller centralized capacity within the same architectural platform, the E91 Series is also available in compact capacity configurations.
Explore E91 compact facility platform (10–20 kVA):
https://xpcc.com/products/e91_10-20k/
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 expanded-capacity facility UPS platforms.
| Parameter | E91 Series (30–40 kVA) |
| Power Rating | 30 kW / 40 kW |
| Topology | Online double conversion (3-phase input / output) |
| Output Power Factor | Unity (1.0) |
| Efficiency | 94% online / 98% ECO mode |
| User Interface | 4.3″ color touch display |
| Frequency Conversion | Selectable 50 / 60 Hz operation |
| Input Configuration | Dual input (rectifier + bypass) or single input |
| Battery Architecture | Internal VRLA batteries with optional expansion cabinets |
| Certifications | UL, cUL, FCC, Energy Star 2.0 |
| Warranty | 2 years electronics / 2 years battery |
Detailed electrical and mechanical specifications are available in the specifications tab.
Infrastructure planners frequently evaluate compact centralized UPS platforms alongside modular and lithium-integrated architectures when defining facility modernization or expansion strategies.
Explore detailed platform comparisons:
https://xpcc.com/e91-ups-comparisons/
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 | E91-30K | E91-30K4 | E91-40K | |
| CAPACITY | Power rating | 30kVA/30kW | 30kVA/30kW | 40kVA/40kW |
| 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 | 150% for 1 min, 125% for 10 min, 110% for 60 min | |||
| Inverter switching frequency | 19.2 kHz | |||
| Efficiency | up to 94% online mode or 98% ECO mode | |||
| INTERNAL BATTERY | Battery type | Sealed maintenance-lead acid | ||
| Battery quantity | (60) 12V/580W | (80) 12V/580W | ||
| Max charging adjustable | 16A | |||
| PHYSICAL | Dimensions (W x D x H) | 23.6” x 36.3” x 65.6” | ||
| Weight | 496 lbs | 549 lbs | 551 lbs | |
| OPTIONAL BATTERY PACK | Model | EBP10-5 | ||
| Battery quantity and size | (100) 12V 580W | |||
| Weight & Dimensions (W x D x H) | 770 lbs / 11.9″ x 34″ x 40.2″ | |||
| ENVIRONMENT | Operating temperature | 32–104°F (0–40°C)* | ||
| Altitude | 5,200 ft above sea level* | |||
| APPROVALS | UL, cUL, FCC | |||
| 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 | |||