X90-2S vs Vertiv APM2
The Xtreme Power X90-2S and Vertiv APM2 are modular frame UPS platforms for data-center, industrial, imaging, and mission-critical facility power in the 30–120 kVA class. The X90-2S integrates modular power conversion, internal VRLA batteries, maintenance bypass, and the static switch in one frame, about 6 minutes of internal runtime at 100 kW; the APM2 is a modular frame typically deployed with external battery cabinets. These differences shape electrical-room footprint, runtime architecture, and installation scope.
What the X90-2S brings
- Higher maximum frame capacity (140 vs 120 kVA)
- Internal battery runtime for retrofit-constrained rooms (6 min at 100 kW)
- Longer runtime per external cabinet (15–18 min vs 8.5 min)
- Maintenance bypass and static switch integrated as standard
- Fewer separate cabinets to plan and install
Side-by-side specifications
| Specification | Xtreme Power X90-2S | Vertiv APM2 | Engineering consideration |
|---|---|---|---|
| Topology | Online double conversion | Online double conversion | Equivalent protection |
| Voltage | 480 V three-phase | 480 V three-phase | Equal, 480 V 3-phase |
| Capacity range | 50–140 kVA | 30–120 kVA | X90 – higher max capacity (140 vs 120 kVA) |
| Internal runtime | 6 min @ 100 kW | 1.5 min @ 90 kW | X90 – real internal runtime |
| Runtime, 1 battery cabinet | 15 min @ 140 kW (18 min @ 120 kW) | 8.5 min @ 120 kW | X90 – longer runtime per cabinet |
| Maintenance bypass | Integrated (standard) | Internal optional / external common | X90 – integrated bypass standard |
| Static switch | Integrated in the power frame | Separate modular config common | Integration approach differs |
| System integration | Integrated modular frame | Modular frame system | X90 integrates more in one frame |
| Electrical footprint | 6.9 sq ft (UPS + batteries + bypass) | 6.6 sq ft (UPS frame only) | Comparable; X90 figure includes batteries + bypass |
| Battery serviceability | Modular internal battery | Modular battery architecture | Both modular battery service |
| Efficiency (online) | Up to 96.5% | Up to 96.5–97% | Comparable; APM2 up to 97% |
| Output power factor | Unity (1.0) | Unity (1.0) | Equal unity PF |
| Short-circuit withstand | 65 kAIC | 65 kAIC | Equal fault withstand |
Specifications from Xtreme Power’s X90-2S vs Vertiv APM2 comparison; confirm against current vendor documentation. Footprint figures are not like-for-like: the X90-2S value includes internal batteries and bypass, the APM2 value is the UPS frame only.
Choosing between them
The X90-2S leads on maximum capacity, internal and per-cabinet runtime, and standard integration of bypass and static switch; the APM2 offers a slightly higher peak efficiency and a modular-system approach favored where external-battery flexibility is the priority. Online topology, unity power factor, and fault withstand are equivalent.
Choose the X90-2S if you need
- Internal battery runtime in retrofit-constrained electrical rooms
- Higher maximum frame capacity (to 140 kVA)
- Integrated maintenance bypass and static switch as standard
- Fewer system cabinets to plan, install, and service
- Footprint optimization for facility modernization
The Vertiv APM2 may fit if you need
- A modular-system approach built around external battery cabinets
- The top-of-range efficiency edge in favorable load profiles
- Alignment with an existing Vertiv infrastructure standard
Frequently asked questions
Integration and internal runtime. The X90-2S combines modular power, internal VRLA batteries, maintenance bypass, and the static switch in one frame (about 6 minutes at 100 kW internally), while the APM2 typically relies on external battery cabinets with limited internal runtime. The X90-2S also reaches a higher maximum frame capacity (140 vs 120 kVA).
Marginally, at the top of its range. The APM2 is rated up to 96.5 to 97% online versus the X90-2S’s up to 96.5%; actual efficiency depends on load profile and configuration. The difference is small relative to the runtime and integration gaps.
They are comparable, but the figures are not like-for-like. The X90-2S’s 6.9 sq ft includes its internal batteries and bypass; the APM2’s 6.6 sq ft is the UPS frame alone, before the external battery cabinets it needs for runtime. Counting everything the APM2 requires, the X90-2S is competitive on total electrical-room footprint.
Internal battery capability lets the X90-2S deploy in space-constrained electrical rooms without immediately adding external battery cabinets, which simplifies modernization of legacy installations. External runtime can still be scaled later with matching VRLA or lithium cabinets.
Related comparisons
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