TX91L Isolation Online UPS

Isolation Power Quality Platform for Extended Runtime & Electrically Challenging Infrastructure

3.8 kW – 10 kW | 240 / 120 V or 230 / 115 V | True Online Double-Conversion | External Battery Architecture

The Xtreme Power Conversion TX91L Series is an isolation-based online UPS platform engineered for environments requiring superior power conditioning, electrical noise mitigation, and long-duration runtime capability.

Designed around a galvanically isolated transformer architecture, the TX91L electrically separates utility input from critical loads, mitigating common-mode noise, grounding instability, harmonic distortion, and transient disturbances that can affect equipment reliability and operational continuity.

Unlike internally-battery-integrated isolation UPS systems, the TX91L is optimized for large external battery configurations, enabling extended runtime deployment strategies in industrial facilities, retail infrastructure, laboratory environments, and distributed commercial installations where prolonged outage protection is required.

Product Resources

Datasheet (PDF)
https://xpcc.com/wp-content/uploads/TX91L-flyer.pdf

Isolation Power Quality Guide
https://xpcc.com/isolation-ups-power-quality-guide/

UPS for Industrial Automation
https://xpcc.com/ups-for-industrial-automation/

UPS for Harsh Environments
https://xpcc.com/ups-for-harsh-environments/

UPS for Mass Spectrometers
https://xpcc.com/ups-for-mass-spectrometers/

UPS Selector
https://xpcc.com/ups-sizing-tool/

Why Isolation + External Battery UPS Architecture Exists

Facilities with unstable electrical infrastructure or extended outage risk often require both:

• galvanic isolation for power quality stabilization
• scalable external battery systems for long-duration runtime

Isolation transformer UPS platforms with external battery architecture address:

• common-mode electrical noise propagation
• grounding inconsistencies and electrical interference
• harmonic distortion from nonlinear facility loads
• prolonged outage mitigation strategies
• generator coordination challenges
• protection of sensitive industrial and commercial electronics

This architecture is widely deployed in industrial automation, retail continuity planning, research environments, and distributed infrastructure where power quality and runtime duration are equally critical.

Isolation Transformer Architecture Advantage

The TX91L isolation transformer provides:

• galvanic separation in both inverter and bypass operation
• reduction of common-mode noise transmission
• stabilization of ground reference conditions
• superior surge protection performance
• improved waveform integrity for sensitive electronic systems

In challenging electrical environments, isolation-based UPS architecture is frequently considered a system design requirement rather than an optional enhancement.

Key Engineering Features

• True online double-conversion topology with zero transfer time
• Integrated galvanic isolation transformer architecture
• External battery-optimized design (no internal battery trays)
• Programmable high-current charger (1–4 A) for large battery banks
• Extended runtime scalability from minutes to multi-hour protection
• Static bypass transfer switch for overload and fault protection
• Maintenance bypass for uninterrupted service
• High-performance surge suppression (<10 V L-N, <0.5 V N-G)
• Compliance with ANSI/IEEE C62.41 surge standards
• Dual voltage configurations (240 / 120 V or 230 / 115 V)
• Generator compatibility for facility backup power coordination
• Tower deployment optimized for industrial and equipment room environments
• 3-year electronics warranty (North America)

Deployment Environments

The TX91L platform is engineered for electrically challenging environments requiring extended runtime and isolation-based power protection.

• Retail & Distributed Commercial Infrastructure
• Industrial Automation & Process Control Systems
• Laboratory & Analytical Equipment Environments
• Medical Diagnostic & Imaging Support Systems
• Broadcast & Professional AV Infrastructure
• Generator-Backed Facilities with Unstable Utility Power
• Facilities Requiring Multi-Hour Runtime Protection

Capacity & Runtime Philosophy

The TX91L supports extended runtime deployment strategies aligned with facility continuity planning rather than short ride-through protection.

Typical runtime design objectives include:

• maintaining operational continuity during prolonged outages
• supporting generator startup and stabilization periods
• protecting sensitive systems during extended utility interruptions
• enabling facility-wide critical load protection strategies

Available capacity configurations:

• 3.8 kW
• 5 kW
• 6 kW
• 10 kW

Voltage configurations:

• 240 / 120 VAC
• 230 / 115 VAC

Runtime architecture:

• large external battery string support
• scalable runtime from minutes to many hours
• application-specific battery sizing strategies

Platform Positioning Within UPS Architecture

The TX91L represents the extended-runtime isolation power-quality platform within the Xtreme Power single-phase UPS ecosystem.

Platform differentiation:

• TX91 — Isolation + laboratory power quality
• TX91L — Isolation + long-duration runtime
• T91 — Tower runtime scalability platform
• P91 — Rack runtime infrastructure platform
• J90 — Lithium lifecycle optimization platform
• Modular platforms — scalable infrastructure architecture

Platform selection depends on:

• electrical noise environment
• runtime requirements
• infrastructure continuity strategy
• lifecycle maintenance planning
• facility backup power design

Compare TX91L to Other Isolation UPS Platforms

View isolation UPS comparison ecosystem
https://xpcc.com/tx91-isolation-ups-competitive-comparisons/

TAA-Compliant Power Protection Options

The TX91L supports regulated commercial, government, and industrial deployments requiring Trade Agreements Act compliance.

TAA-Compliant Single-Phase UPS
https://xpcc.com/taa-compliant-ups-single-phase/

Engineering Support for Extended Runtime Power Quality Planning

Selecting an isolation UPS platform with external battery architecture requires evaluation of:

• facility electrical noise exposure
• grounding design considerations
• runtime continuity objectives
• generator coordination strategy
• battery system design requirements

Xtreme Power Conversion provides engineering guidance to support power quality architecture and extended runtime deployment planning.

Contact

(800) 582-4524
sales@xpcc.com