TX91-6kVA vs PowerVAR
The Xtreme Power TX91-6kVA and the PowerVAR isolation UPS are true online double-conversion systems with integrated isolation transformers, protecting sensitive industrial, laboratory, and mission-critical loads. Both deliver full 6 kVA / 6 kW unity-PF output and galvanic isolation. The TX91-6kVA differentiates on longer internal runtime, flexible output configurations, and built-in TAA compliance.
Where the TX91-6kVA leads
- Longer internal runtime at full load — about 8 minutes versus about 7 minutes.
- More flexible, configurable input/output versus a hardwired-first default.
- Built-in TAA compliance for federal and regulated procurement.
- Compliance certainty that simplifies project approval.
6000 VA isolation UPS, side by side
| Specification | Xtreme Power TX91-6kVA | PowerVAR (model TBD) | Advantage |
|---|---|---|---|
| UPS capacity | 6000 VA / 6000 W (unity PF) | 6000 VA / 6000 W (unity PF) | Output aligned |
| 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 | Equivalent |
| Internal runtime (full load) | ~8 min | ~7 min | Longer runtime |
| Optional extended runtime | Yes | Yes (XR option) | 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 (standard SKU) | Federal procurement |
Both are true online double-conversion isolation UPS delivering full 6 kW unity-PF output 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 is hardwired-first. Confirm current PowerVAR specifications against vendor documentation.
Choosing between them
Both deliver galvanic isolation and full 6 kW unity-PF output. Choose the TX91-6kVA for longer internal runtime, flexible input/output, and TAA; PowerVAR fits where a hardwired-first architecture or an existing PowerVAR standard governs.
Choose the TX91-6kVA if you need
- Full 6000 W unity-PF output with integrated isolation
- 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
The (model TBD) may fit if you need
- Existing PowerVAR-standardized industrial UPS environments
- A hardwired-first architecture for fixed installations
- 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.