E91 Three-Phase UPS – Expanded Capacity Facility UPS (30–40kVA, 208/120V)

The Xtreme Power E91 Series (30–40 kVA) is designed for healthcare, industrial, commercial, telecommunications, and distributed IT environments where increased centralized capacity is required without transitioning to modular UPS architecture.

Key Specifications

• 30 / 40 kVA
• 208/120V three-phase
• Online double-conversion topology
• Unity output power factor (1.0)
• Internal VRLA battery architecture
• Optional external battery cabinets for runtime expansion
• Up to 94% online efficiency (98% ECO mode)
• Dual input or single input configuration
• 4.3″ color touchscreen interface
• UL, cUL, FCC, Energy Star 2.0
• 2-year electronics / 2-year battery warranty

Datasheet:
https://xpcc.com/wp-content/uploads/E91-10-20kW-Flyer.pdf

Compact Centralized UPS Architecture

E91 defines the category of expanded-capacity compact centralized three-phase UPS systems for localized facility infrastructure. The platform integrates UPS electronics and VRLA batteries within a single cabinet, enabling simplified deployment and efficient use of electrical room space. Optional external battery cabinets provide runtime expansion without introducing modular system complexity.

This architecture is commonly selected where infrastructure planners require higher centralized capacity while maintaining predictable deployment and service models.

Where E91 Fits

E91 (30–40 kVA) operates as the expanded-capacity centralized UPS platform within distributed and facility-level infrastructure.

Within the Xtreme Power architecture:

• P91 / J90 → rack-level UPS systems
• E91 (10–20 kVA) → compact facility UPS
• E91 (30–40 kVA) → higher-capacity centralized facility UPS (this platform)
• Li90 → integrated lithium modernization platform
• M90U → modular scalable UPS platform

E91 is typically deployed in electrical rooms supporting larger localized infrastructure where higher capacity is required but modular scalability is not necessary.

Key Advantages of E91 (30–40 kVA)

E91 is engineered for facilities where higher centralized capacity, service simplicity, and predictable lifecycle planning are primary considerations.

• Integrated UPS and battery cabinet simplifies installation and reduces footprint
• Higher capacity within a compact centralized architecture
• Optional external battery cabinets for runtime flexibility
• Established VRLA lifecycle with predictable maintenance intervals
• Simplified retrofit deployment in existing electrical rooms
• Accessible service design for routine maintenance

E91 vs Modular UPS Platforms

Modular UPS systems provide scalability and redundancy but introduce additional system complexity, footprint, and cost. E91 provides a centralized architecture for applications where capacity requirements are defined and stable, eliminating the need for modular expansion while simplifying installation and maintenance planning.

E91 vs Lithium Three-Phase UPS (Li90)

E91 represents a VRLA-based approach aligned with established service models and lower upfront cost. Lithium platforms such as Li90 prioritize reduced maintenance, longer battery life, and improved energy density. E91 is typically selected when infrastructure is aligned with periodic battery replacement cycles and when predictable lifecycle planning is preferred.

Learn more:
https://xpcc.com/lithium-ups-vs-lead-acid-ups/

Replace Legacy Three-Phase UPS Systems

E91 (30–40 kVA) is commonly deployed to replace aging centralized UPS systems in facilities requiring higher capacity within constrained electrical rooms. Typical replacement scenarios include:

• Healthcare imaging and multi-room clinical environments
• Industrial production and automation systems
• Commercial facility electrical infrastructure upgrades
• Telecommunications aggregation nodes
• Distributed IT and micro data center environments

Explore comparisons:
https://xpcc.com/e91-ups-comparisons/

Typical Applications

E91 is deployed across facilities requiring higher-capacity centralized UPS protection, including healthcare imaging suites, industrial automation systems, commercial infrastructure, telecommunications nodes, and distributed IT environments.

Capacity Guidance

Capacity selection is based on infrastructure scale and load profile. A 30 kVA system is commonly used for larger imaging or industrial electrical rooms, while 40 kVA supports broader commercial facility infrastructure and higher-density centralized loads. Runtime can be extended through external battery cabinets based on continuity requirements.

Compact Capacity Options

For deployments requiring smaller centralized capacity within the same architecture:

E91 10–20 kVA platform:
https://xpcc.com/products/e91_10-20k/

Infrastructure Planning Context

E91 (30–40 kVA) is typically selected in environments where centralized UPS protection must balance electrical room space, maintenance strategy, runtime flexibility, and overall system simplicity. This makes it well suited for facilities requiring higher capacity without the complexity of modular or lithium-based systems.

Technical Summary

• Topology: Online double conversion
• Capacity: 30–40 kVA
• Voltage: 208/120V three-phase
• Battery: Internal VRLA with external expansion options
• Architecture: Centralized compact UPS
• Efficiency: Up to 94% online / 98% ECO
• Application: Expanded-capacity facility infrastructure

Plan With Confidence

Xtreme Power Conversion supports facility engineers, contractors, and infrastructure planners in deploying UPS systems with predictable lifecycle performance, efficient electrical room integration, and reliable power protection.

Phone: (800) 582-4524
Email: sales@xpcc.com