In environments where power reliability is non-negotiable—think data centers, medical labs, or industrial setups—the right uninterruptible power supply (UPS) can make all the difference. The APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI), designed by Schneider Electric, stands out as a high-density, double-conversion online UPS tailored for demanding applications. With its rack-mountable design and robust feature set, this UPS is built to deliver uninterrupted power and scalability for critical systems. In this blog, we’ll unpack its specifications, features, benefits, and why it’s a top-tier choice for serious power protection needs.
What is the APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI)?
The APC Smart-UPS RT SURT20KRMXLI is a 20kVA (20,000VA) UPS with a maximum configurable power output of 16,000 watts (16kW), designed for 230V single-phase or 400V three-phase input environments. Part of APC’s renowned Smart-UPS RT series, it’s a rack-mountable unit occupying 12U of space, making it ideal for server rooms or IT closets where floor space is at a premium. This UPS provides true double-conversion online power protection, converting incoming AC power to DC and back to AC for a clean, consistent output—perfect for sensitive equipment like blade servers, networking gear, or industrial machinery.
The SURT20KRMXLI comes equipped with a multifunction LCD console, a pre-installed network management card (AP9631), rack-mounting rails, and connectivity options like RS-232 and RJ-45 ports, ensuring both local and remote management capabilities.
Key Features of the SURT20KRMXLI
- 20kVA/16kW Capacity: Supports high-power loads up to 16,000 watts, with a scalable runtime that can be extended via external battery packs.
- Double-Conversion Online Topology: Delivers pure sine wave output with zero transfer time, ensuring uninterrupted power even during outages or voltage fluctuations.
- Flexible Input Options: Supports single-phase (230V) or three-phase (400V) input wiring, adapting to various power infrastructures.
- LCD Control Panel: An intuitive, alpha-numeric display provides real-time system status, alarms, and diagnostics at your fingertips.
- Multiple Output Connections: Includes eight IEC 320 C19 outlets, two IEC jumpers, and hardwire options (3-wire or 5-wire), offering versatile connectivity.
- Network Manageability: Comes with a pre-installed AP9631 network card for remote monitoring and control via SNMP, web interface, or APC’s InfraStruXure Manager.
- Hot-Swappable Batteries: Four included battery modules (APCRBC140 replacements) allow maintenance without downtime, with a typical recharge time of 2.5 hours.
- Built-In Bypass: Features automatic and manual internal bypass, with an optional external bypass, to maintain power during overloads or faults.
Benefits of the SURT20KRMXLI
- Unmatched Reliability: The double-conversion design and sine wave output ensure clean, stable power, protecting sensitive electronics from surges, spikes, and noise (with full-time multi-pole filtering meeting UL 1449 standards).
- Scalability: Need more runtime? Add external battery packs (e.g., SURT192RMXLBP2) to extend backup from minutes to hours, tailoring the system to your needs.
- Space Efficiency: Its 12U rack-mount form factor (533 x 432 x 773 mm) optimizes vertical space, while the rack/tower convertible design protects your investment if your setup evolves.
- Smart Management: Remote monitoring via the included network card reduces on-site maintenance needs, while intelligent battery management maximizes battery life through precision charging.
- High Efficiency: Operates at 94% efficiency at full load (93% on battery), minimizing energy waste and heat output (3770 BTU/hr online).
Installation and Setup
Installing the SURT20KRMXLI requires some planning due to its 247.73 kg weight and electrical demands:
- Prepare the Rack: Ensure your 19-inch rack can support the UPS’s size (12U) and weight, with proper ventilation.
- Wiring: Connect to your power source using the removable input/output tray, choosing between single-phase (3-wire: H N + G) or three-phase (5-wire: 3PH + N + G) configurations. A 125A input breaker is recommended.
- Battery Connection: The four included battery modules need to be connected during initial setup—follow the manual carefully.
- Network Setup: Plug in the RJ-45 cable to your network, configure the AP9631 card via its web interface, and enable alerts or remote shutdowns.
- Test: Power on the unit, check the LCD for diagnostics, and verify load operation.
Given its complexity, professional installation is advised for those unfamiliar with high-capacity UPS systems.
Who Should Use the SURT20KRMXLI?
This UPS is tailored for:
- Data Centers: Powers racks of servers or blade systems with high availability requirements.
- Industrial Settings: Supports light industrial applications or medical labs needing stable, noise-free power.
- Enterprise IT: Ideal for businesses with voice/data networks or critical infrastructure across multiple sites.
- Remote Facilities: The network card enables management of unmanned locations.
It’s overkill for small home offices but shines in environments demanding 10-20kVA of power.
Things to Consider
- Weight and Space: At nearly 248 kg and 12U, it’s a hefty unit requiring a sturdy rack and significant vertical space.
- Runtime: Base runtime is modest (e.g., ~4-6 minutes at full load), so plan for external batteries if longer backup is needed.
- Noise: Emits 59 dBA at 1 meter, which may be noticeable in quiet settings.
- Cost: This is a premium solution—expect a higher upfront investment, though its features justify it for critical applications.
Final Thoughts
The APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI) is a powerhouse engineered for reliability, flexibility, and scalability. Its double-conversion technology, extensive connectivity, and smart management features make it a top contender for protecting high-density, mission-critical systems. While it demands careful installation and a sizable budget, the peace of mind it offers—backed by APC’s industry-leading reputation—is hard to beat.
Whether you’re powering a server farm, a lab, or an industrial operation, the SURT20KRMXLI ensures your equipment stays online, no matter the power conditions. Pair it with the right accessories (like the APC 19″ Rail Kit or additional batteries), and you’ve got a future-proof solution ready to grow with your needs.
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