Power-quality-first protection for precision environments

The TX91 is the power-quality-first UPS platform for environments where electrical noise and grounding conditions directly impact system performance. It is built for applications where standard, IT-focused UPS platforms do not provide sufficient electrical isolation — analytical laboratories, measurement and control systems, and sensitive electronic instrumentation. Beyond conventional online protection, the TX91 conditions power at the source through galvanic isolation, improving waveform integrity and stabilizing operating conditions for sensitive loads.

Galvanic isolation that conditions power at the source

Unlike transformerless UPS platforms, the TX91 incorporates an optional integrated galvanic isolation transformer that electrically separates the utility input from connected loads — and provides power conditioning during both normal and bypass operation. This architecture mitigates the disturbances that degrade precision measurement:

The result is improved waveform integrity, a stable ground reference, and repeatable operating conditions — without the expensive dedicated circuits a non-isolated approach would require.

What the TX91 delivers

The isolation tier of the Xtreme Power family

The TX91 sits where power quality and electrical isolation are primary design requirements, rather than IT-grade load protection alone. For isolated online voltage regulation without internal batteries, the TXVR is the companion platform.

Need isolated online voltage regulation without internal batteries? See the TXVR.

Beyond IT-grade online UPS

Standard online UPS systems are designed primarily for IT load protection and do not address electrical noise or grounding instability to the same degree. Transformerless platforms prioritize efficiency and compact size but provide no electrical isolation between input and output. The TX91 adds galvanic isolation that improves power quality at the source — suited to environments where measurement accuracy is affected by electrical noise, ground-reference variation impacts performance, or instrumentation sensitivity exceeds IT-grade requirements.

Four models, 3.8–10 kVA

All models are tower form factor, 9.9 × 23.3 × 32.4 in, with unity output power factor, ±1% regulation, and a 273 VDC charger (1–4 A selectable). Input and output land on terminal blocks or an optional configurable PDU. Runtime extends via XR internal batteries and external BP960 battery cabinets. (6 kVA system capacity is reduced by a 30 A input circuit; the PDU L6-30P input option is 6 kVA only.)

Runtime by battery configuration and load

Estimated runtime in minutes at 50% and 100% load, by battery configuration — from the standard internal battery and the high-rate XR internal battery through external BP960 battery cabinets in increasing quantity.

Runtimes are shown in minutes and vary with battery condition, age, cycles, and ambient temperature. The TX91 is designed primarily for power-quality stabilization and controlled shutdown — ride-through, controlled instrument shutdown, and stabilization during generator transfer. Contact Xtreme Power at (800) 582-4524 or sales@xpcc.com for runtime sizing.

Where the TX91 is deployed

The TX91 is deployed where electrical noise, grounding conditions, and waveform quality directly affect system performance — analytical laboratory instrumentation, mass spectrometry, pharmaceutical and research facilities, industrial measurement and control, semiconductor environments, retail, and harsh electrical infrastructure. Organizations modernizing laboratory and research infrastructure adopt isolation UPS to standardize power quality, improve measurement repeatability, and reduce instrument fault incidence.

TAA-compliant power protection

The TX91 supports regulated laboratory and government deployments requiring Trade Agreements Act compliance, alongside UL1778, cUL, FCC Class A, and RoHS.

TX91 specifications

Documents and related links