In the high-stakes realm of data centers, server farms, and industrial setups, even a millisecond of power disruption can cascade into massive losses. The APC Smart-UPS On-Line 20kVA/20kW Rack/Tower 230V/380V (SRTG20KXLI), from Schneider Electric’s APC portfolio, delivers double-conversion online topology with zero transfer time, ensuring uninterrupted pure sine wave power for your most vital equipment. This 7U rack/tower convertible unit supports 3-phase input/output configurations up to 415V, making it a powerhouse for global deployments. As of October 2025, it remains a benchmark for scalability and efficiency in enterprise UPS solutions. In this blog, we’ll delve into its features, specs, performance, and practical value to guide your power strategy.
Why the SRTG20KXLI Excels in Critical Environments
Unlike line-interactive models, the SRTG20KXLI’s double-conversion design continuously regenerates clean AC power, isolating loads from grid noise, harmonics, and surges—perfect for sensitive servers, storage arrays, VoIP networks, medical labs, or light industrial gear. With a preinstalled Network Management Card, it enables remote monitoring via EcoStruxure IT, predictive maintenance, and automated alerts. Its energy efficiency—up to 93% in battery mode—slashes operational costs, while support for up to four external battery packs (SRTG192XLBP2) scales runtime for prolonged outages. Certified for global standards like CB and RoHS, it’s a reliable choice for 24/7 uptime demands.
Key Features for Unrivaled Reliability
Engineered for enterprise demands, the SRTG20KXLI boasts:
- Double-Conversion Online Topology: Zero transfer time and full isolation for flawless power delivery.
- Pure Sine Wave Output: Less than 5% harmonic distortion, with a 3:1 crest factor for demanding loads.
- Scalable Runtime: Base unit plus up to 4 external packs for extended protection.
- Integrated Network Management: Preloaded card for SNMP, HTTP, and email/SMS alerts; supports PowerChute for shutdown automation.
- Graphical LCD Interface: Multicolor display for real-time metrics, configuration, and diagnostics.
- Static Bypass: Built-in for maintenance without downtime.
- Surge and Noise Filtering: Full-time multi-pole filtering with IEEE-compliant surge let-through.
- Hot-Swappable Batteries: Lead-acid design with 3-5 year life; easy replacement.
These elements make it versatile for hybrid rack/tower installs, with front-access for space-constrained racks.
Specifications at a Glance
Compiled from official documentation, here’s a detailed overview:
| Category | Details |
|---|---|
| Power Capacity | 20kVA / 20kW (configurable up to 20kVA) |
| Topology | Double-Conversion Online |
| Waveform | Pure Sine Wave (THD <5%) |
| Input Voltage | 380-415V 3-Phase / 230V 1-Phase (160-285V limits) |
| Input Frequency | 40-70 Hz auto-sensing |
| Input Connections | 1x Hard Wire 5-Wire (3P+N+E); 1x Hard Wire 3-Wire (1P+N+E) |
| Output Voltage | 380-415V 3-Phase / 230V 1-Phase |
| Output Connections | 1x Hard Wire 5-Wire (3P+N+E); 1x Hard Wire 3-Wire (1P+N+E); 1x IEC 3-Wire |
| Efficiency | 93% (battery mode) |
| Battery Type | Sealed Lead-Acid (+/-192V); Recharge: 4 hours; Life: 3-5 years |
| Extended Runtime | Up to 17,280 VAh with 4x SRTG192XLBP2 packs |
| Dimensions (H x W x D) | 30.6 cm x 44 cm x 70 cm (7U rack) |
| Weight | 142.5 kg (net); 157.2 kg (shipping) |
| Noise Level | 58 dBA |
| Operating Temp/Humidity | 0-40°C; 0-95% non-condensing |
| Communications | Network Card (RJ-45 10/100); RS-232; USB; Smart-Slot |
| Warranty | 2 years (UPS) |
| Certifications | CB, EN/IEC 60204-1/2, RoHS, REACH, Green Premium |
It’s built for durability with IP20 protection and 3,821 BTU/h heat dissipation.
Performance and Runtime: Built for Endurance
The SRTG20KXLI handles overloads gracefully—60 seconds at 125% and 30 seconds at 150%—while maintaining <5% input harmonics for clean grid interaction. Base runtime clocks in at 3.5 minutes full load (20kW) and 9.5 minutes half load (10kW), sufficient for graceful shutdowns. Add external packs for serious extension: One pack boosts to ~6,912 VAh, scaling to over 17kAh with four, potentially yielding 30-60+ minutes at half load depending on config. In 2025 benchmarks, it achieves 93% efficiency under load, minimizing heat and energy waste. The static bypass ensures seamless maintenance, and the LCD provides precise runtime estimates.
Ease of Setup and Daily Use
Deployment is straightforward for pros: Mount in a 7U rack (rail kit sold separately) or tower, wire the hard connections, and configure via the intuitive LCD or web interface. The preinstalled card simplifies remote setup with IPv6 support and role-based access. Daily ops benefit from audible alarms for battery/low overload events and hot-swappable components—no downtime for battery swaps. At 142.5 kg, it’s hefty, so plan for team lifts; front-access eases servicing in dense racks.
Pros, Cons, and User Insights
Sourced from retailer and community feedback as of October 2025:
Pros:
- Zero-transfer double-conversion for ultimate isolation.
- Scalable with external packs for flexible runtimes.
- Efficient and quiet (58 dBA) for data center fits.
- Robust monitoring ecosystem reduces admin overhead.
Cons:
- Substantial weight and size demand sturdy racking.
- Configuration tweaks (e.g., phase/voltage) may need firmware access.
User reviews average 4.5-5/5 with praise for reliability: One 2025 review called it a “lifesaver for our server room during grid failures,” noting seamless EcoStruxure integration. A community thread highlighted minor setup hurdles for custom phases but affirmed its durability post-resolution. Overall, it’s lauded for uptime in enterprise scenarios.
Who Should Buy the SRTG20KXLI?
This beast suits:
- Data Center Managers: Protecting high-density server clusters.
- Industrial Facilities: Safeguarding PLCs and automation in 3-phase environments.
- Healthcare/Telecom: Ensuring compliance for labs or VoIP backbone.
- Enterprises needing scalable, online protection beyond 10kVA.
For smaller loads, consider the 10kVA sibling; rack rails (SURTRK2) are essential add-ons.
Final Thoughts: Powering the Future Without Interruption
The APC Smart-UPS On-Line 20kVA/20kW Rack/Tower 230V/380V (SRTG20KXLI) redefines enterprise resilience with its double-conversion prowess, scalability, and smart integrations. In October 2025’s edge-to-cloud landscape, where power reliability is paramount, this UPS delivers value through efficiency and longevity. It’s a strategic investment for any operation intolerant of downtime – CONTACT US @ TIACO TECHNOLOGIES for pricing and bundles.
Deployed the SRTG20KXLI in your setup? Share your uptime stories in the comments!