E91 30 kVA vs APC Easy UPS 3S 30 kVA
The Xtreme Power E91 30 kVA and the APC Easy UPS 3S 30 kVA are online double-conversion UPS systems for 208/120V three-phase applications, both delivering full 30 kVA / 30 kW usable capacity. The E91 provides defined internal runtime at full rated load within an integrated cabinet and broader standard warranty coverage; the Easy UPS 3S offers configurable internal battery strings with runtime dependent on configuration and optional start-up coverage.
Where the E91 30 kVA leads
- Defined internal runtime at full rated load — 6 min @ 30 kW, where APC runtime varies by configuration.
- An integrated internal battery cabinet.
- Full 30 kVA / 30 kW usable output.
- Equivalent high-efficiency operation.
- Broader standard warranty coverage.
30 kVA three-phase UPS, side by side
| Specification | Xtreme Power E91 30 kVA | APC Easy UPS 3S 30 kVA | Advantage |
|---|---|---|---|
| Rated capacity | 30 kVA / 30 kW | 30 kVA / 30 kW | Equal usable power |
| Voltage | 208/120V, 3-phase | 208/120V, 3-phase | Direct electrical match |
| UPS topology | Online double-conversion | Online double-conversion | Equivalent protection |
| Battery architecture | Internal VRLA batteries | Internal VRLA battery strings | Integrated batteries |
| Internal runtime (full load) | 6 min @ 30 kW | Runtime varies by configuration | Defined runtime included |
| Efficiency (online / ECO) | Up to 94% / 98% | Up to 94% / 98% | Equivalent efficiency |
| Dimensions (W × D × H) | 23.6 × 36.3 × 65.6 in | 15 × 41 × 44 in | E91 includes integrated batteries |
| Warranty | 2-year parts; start-up & labor optional | 1-year with certified start-up | Longer standard coverage |
| TAA compliance | TAA compliant | TAA available | Eligible for federal procurement |
Both are true online double-conversion three-phase UPS with full 30 kW usable output, equivalent efficiency, and comparable TAA eligibility. The E91 includes integrated batteries (a physically larger cabinet) and a defined full-load runtime where APC runtime varies by configuration, plus broader standard warranty. Confirm current APC specifications against Schneider documentation.
Choosing between them
Both deliver equivalent protection at 30 kW. Choose the E91 for a defined full-load runtime, an integrated battery cabinet, and longer standard coverage; the Easy UPS 3S fits where configurable internal runtime or an existing APC/Schneider standard governs.
Choose the E91 30 kVA if you need
- Defined runtime at full rated load
- An integrated battery cabinet
- Full 30 kW usable capacity
- Longer standard warranty coverage
- Predictable runtime configuration
The Easy UPS 3S 30 kVA may fit if you need
- Facilities standardized on APC / Schneider infrastructure
- Configurable internal battery runtime is preferred
- Alignment with Easy UPS deployments and Schneider service continuity
Related comparisons
Standardizing compact three-phase UPS across your facilities?
Xtreme Power supports E91 three-phase UPS sizing, runtime planning with external battery cabinets, modernization strategy for legacy three-phase UPS, and TAA-compliant procurement for healthcare, education, retail, industrial, and enterprise infrastructure.