TX91-5kVA vs PowerVAR
The Xtreme Power TX91-5kVA and the PowerVAR isolation UPS are true online double-conversion systems with integrated isolation transformers, for electrically noisy industrial, laboratory, and infrastructure environments. Both deliver galvanic isolation and strong surge immunity. The TX91-5kVA differentiates on longer internal runtime (with an XR variant), plug-and-play configuration flexibility, and built-in TAA compliance.
Where the TX91-5kVA leads
- Longer internal runtime — about 10 minutes (or ~15 with the XR model) versus about 8 minutes.
- An XR extended-runtime variant for longer backup without external batteries.
- More flexible, configurable input/output versus a hardwired-first design.
- Built-in TAA compliance for federal and regulated procurement.
5000 VA isolation UPS, side by side
| Specification | Xtreme Power TX91-5kVA | PowerVAR (model TBD) | Advantage |
|---|---|---|---|
| UPS capacity | 5000 VA / 5000 W (unity PF) | 5200 VA / 5200 W (unity PF) | PowerVAR higher nominal VA |
| Topology | Online double-conversion with isolation transformer | Online double-conversion with isolation transformer | Both galvanic isolation |
| ANSI/IEEE C62.41 | Yes | Yes | Equivalent surge |
| Output voltage options | 120 / 208 / 220 / 230 / 240 VAC | 120 / 208 / 220 / 230 / 240 VAC | Aligned |
| Internal runtime (full load) | ~10 min (or ~15 min XR) | ~8 min | Longer runtime |
| Optional external battery packs | Yes | Yes | Equivalent scalability |
| Input / output architecture | Optional / configurable | Hardwired standard; plugs optional | Greater flexibility |
| Dimensions (W × H × D) | 9.9 × 32.4 × 23.3 in | 9.8 × 32.5 × 24.7 in | Similar; TX91 slightly shallower |
| Warranty | 3 yr electronics / 3 yr battery | 3 yr electronics / 3 yr battery | Equivalent |
| Compliance / listings | UL1778, cUL, FCC-A, RoHS, TAA | UL1778, CSA, EN 62040-2, RoHS | Comparable |
| TAA compliance | Yes | No | Federal procurement |
Both are true online double-conversion isolation UPS with galvanic isolation, equivalent surge performance, the same multi-voltage output, and matching 3-year warranties. The TX91 leads on internal runtime and input/output flexibility and adds TAA; PowerVAR carries a slightly higher nominal VA rating and a hardwired-first design. Confirm current PowerVAR specifications against vendor documentation.
Choosing between them
Both deliver galvanic isolation and online double-conversion protection at ~5 kVA. Choose the TX91-5kVA for longer internal runtime, an XR option, flexible input/output, and TAA; PowerVAR fits where a hardwired-first design, a slightly higher nominal VA, or an existing PowerVAR standard governs.
Choose the TX91-5kVA if you need
- Built-in TAA compliance for federal, education, and public-sector procurement
- Longer internal runtime without external batteries
- XR extended-runtime capability
- A narrower, shallower isolation UPS for space-limited installations
- Simplified procurement for regulated environments
The (model TBD) may fit if you need
- A slightly higher nominal VA / kW rating
- A hardwired-first industrial design
- Existing PowerVAR-standardized environments
- Deployment in non-TAA-regulated projects
Related comparisons
Sizing an isolation UPS for a regulated or industrial deployment?
Xtreme Power supports TX91 isolation UPS sizing, runtime configuration (XR internal and external BP960 cabinets), grounding and power-quality strategy, and TAA-compliant procurement for industrial automation, medical imaging, and laboratory infrastructure.