In environments where downtime is not an option—data centers, medical labs, or industrial facilities—reliable power protection is essential. The APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI) is a high-capacity, rack-mounted uninterruptible power supply (UPS) designed to deliver robust, scalable power backup and surge protection for mission-critical equipment. Manufactured by APC by Schneider Electric, a global leader in power management, this UPS combines advanced technology with flexible installation options. In this blog, we’ll explore the features, specifications, benefits, and ideal applications of the SURT20KRMXLI, helping you determine if it’s the right solution for your power needs.
What is the APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI)?
The APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI) is a double-conversion online UPS that provides high-density power protection for servers, networking equipment, and other sensitive electronics. With a capacity of 20kVA (16kW), it’s built for demanding environments requiring consistent, clean power. Its 12U rack-mounted design makes it ideal for data centers or IT closets, and its ability to support both single-phase and three-phase input adds versatility. Part of APC’s Smart-UPS RT series, this model offers extended runtime options and advanced management features, ensuring maximum uptime and equipment safety.
This UPS is designed to handle power disruptions like outages, surges, and voltage sags, delivering pure sine wave output for compatibility with modern devices. Whether you’re powering blade servers or industrial systems, the SURT20KRMXLI is a powerhouse for reliability.
Key Features of the APC Smart-UPS RT 20kVA RM 230V
- Double-Conversion Online Topology
The SURT20KRMXLI uses double-conversion technology, continuously converting incoming AC power to DC and back to AC. This ensures clean, stable output with zero transfer time during outages, ideal for sensitive equipment. - 20kVA/16kW Capacity
With a 20kVA (16,000W) capacity, it can support high-power loads, such as multiple servers, storage systems, or medical imaging equipment, for extended periods depending on load and battery configuration. - Pure Sine Wave Output
The UPS delivers pure sine wave power, ensuring compatibility with active power factor corrected (PFC) devices like modern servers and networking gear, minimizing the risk of shutdowns or damage. - Scalable Runtime
External battery packs (e.g., SURT192RMXLBP2) can be added to extend runtime from minutes to hours, making it suitable for applications requiring long backup periods. - Flexible Input/Output Options
Supports single-phase (230V) or three-phase (400V) input wiring and configurable output voltages (220V, 230V, or 240V). Output connections include eight IEC 320 C19 outlets, two IEC jumpers, and hardwire options (3-wire or 5-wire). - LCD Control Panel
A multifunction LCD display provides real-time data on input/output voltage, load, battery status, and alarms, simplifying monitoring and diagnostics. - Advanced Battery Management
Intelligent charging and temperature-compensated battery management extend the life of the sealed lead-acid batteries (typically 3–5 years). Hot-swappable batteries allow replacement without downtime. - Network Management Capabilities
Includes a pre-installed Web/SNMP management card (AP9631) for remote monitoring and control via network interfaces (DB-9 RS-232, RJ-45 10/100 Base-T, Smart-Slot). PowerChute software enables graceful shutdowns. - Dual Mains Input
Allows connection to two separate power sources for increased availability, reducing the risk of downtime due to a single power failure. - Bypass Options
Features built-in static and manual bypass, with an optional external bypass, for seamless power transfer during maintenance or faults. - Surge and Noise Filtering
Full-time multi-pole noise filtering (0.3% IEEE surge let-through, zero clamping response time) protects against surges and electromagnetic interference, meeting UL 1449 standards. - Rack/Tower Convertible
The 12U rack-mounted design includes rails and supports tower conversion, offering flexibility for different environments.
Technical Specifications
- Model: APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI)
- Output Power Capacity: 16kW / 20kVA
- Output Voltage: 230V (configurable to 220V or 240V)
- Output Connections: 8 x IEC 320 C19, 2 x IEC jumpers, 1 x hardwire 3-wire (H N + G), 1 x hardwire 5-wire (3PH + N + G)
- Output Waveform: Pure sine wave
- Output Voltage Distortion: <5%
- Output Frequency: 50/60 Hz ±3 Hz (user-adjustable, sync to mains)
- Topology: Double-conversion online
- Overload Capacity: 60 seconds at 125%, 30 seconds at 150%
- Input Voltage: 230V (single-phase) or 400V (three-phase)
- Input Voltage Range: 160–280V (main operations)
- Input Frequency: 40–70 Hz (auto-sensing)
- Input Connections: Hardwire 3-wire (1PH + N + G) or 5-wire (3PH + N + G)
- Battery Type: Maintenance-free sealed lead-acid (APCRBC140, 4 modules)
- Nominal Battery Voltage: ±192V (split, referenced to neutral)
- Typical Recharge Time: 2.5 hours
- Replacement Battery: APCRBC140 (4 required)
- Runtime:
- At full load (16kW): ~4–6 minutes
- At half load (8kW): ~12–15 minutes
- Extendable with external battery packs
- Efficiency: 94% at full load, 93% in battery mode
- Interfaces: DB-9 RS-232, RJ-45 10/100 Base-T, Smart-Slot (AP9631 pre-installed)
- Physical: 533 mm (H) x 432 mm (W) x 773 mm (D), 247.73 kg (545.82 lbs), 12U rack height
- Operating Temperature: 0–40°C
- Audible Noise: 59 dBA at 1 meter
- Warranty: 2 years (repair or replace, varies by region)
- Approvals: EN/IEC 62040-1-1, EN/IEC 62040-2, VDE, RoHS-compliant
Why Choose the APC Smart-UPS RT 20kVA RM 230V?
- Maximum Uptime
The double-conversion topology and dual mains input ensure zero transfer time and high availability, critical for environments where even a millisecond of downtime is costly. - High Power Density
At 20kVA in a compact 12U form factor, it supports power-hungry devices like blade servers or medical equipment without requiring excessive rack space. - Scalability
Extended runtime options and flexible input/output configurations make it adaptable to growing power needs or diverse setups. - Remote Management
The included SNMP card and PowerChute software enable IT administrators to monitor and manage the UPS from anywhere, reducing response times to power events. - Energy Efficiency
With 94% efficiency at full load, the UPS minimizes energy waste, lowering operational costs and heat output in data centers. - Trusted Reliability
APC’s decades-long reputation and rigorous safety certifications ensure a dependable product backed by global support.
Who Should Use the SURT20KRMXLI?
- Data Centers: Power high-density server racks, storage arrays, or networking equipment with zero downtime.
- Medical Facilities: Protect critical systems like MRI machines, lab analyzers, or patient monitoring devices from power disruptions.
- Industrial Applications: Support automation systems, robotics, or control units in manufacturing environments.
- Telecom Networks: Ensure uninterrupted operation of voice/data infrastructure or base stations.
- Large Enterprises: Deploy in branch offices or remote sites requiring robust power protection and remote management.
Benefits of the SURT20KRMXLI
- Prevents Data Loss: Provides enough runtime to save critical data or initiate graceful shutdowns during outages.
- Protects Expensive Equipment: Surge filtering and clean power output extend the lifespan of sensitive electronics.
- Simplifies Maintenance: Hot-swappable batteries, removable wiring trays, and self-diagnostic tests reduce service time.
- Customizable Alerts: Configurable alarms and remote notifications keep you informed of power status.
- Future-Proof Design: Rack/tower convertibility and scalable runtime support evolving infrastructure needs.
Installation and Setup Tips
- Plan Rack Space
Ensure your rack has 12U of available space and can support the UPS’s 247.73 kg weight. Use the included rack-mounting rails for secure installation. - Professional Wiring
Hardwire connections (single- or three-phase) require a qualified electrician to ensure compliance with local codes. - Connect Critical Loads
Prioritize high-power devices for the IEC C19 outlets or hardwire connections. Avoid overloading by checking the 16kW limit. - Configure Network Management
Set up the AP9631 card for remote access via a web browser or SNMP. Install PowerChute for automated shutdowns. - Test the System
Perform a runtime test after installation to verify battery performance and load capacity. - Ensure Ventilation
Place the UPS in a well-ventilated area (0–40°C) to prevent overheating, as it dissipates 3,770 BTU/hr online.
Limitations to Consider
- High Initial Cost: The SURT20KRMXLI is a premium UPS, with prices often exceeding $10,000–$15,000 depending on the region and accessories.
- Weight and Space: At 247.73 kg and 12U, it requires significant rack capacity and structural support.
- Battery Replacement Costs: Four APCRBC140 battery sets (~$500–$1,000 total) are needed for replacements every 3–5 years.
- Noise Level: The 59 dBA noise may be noticeable in quiet environments, though typical for data centers.
- Complex Setup: Hardwiring and three-phase configurations require professional installation, adding to costs.
Real-World Performance
The SURT20KRMXLI is widely praised for its reliability in high-stakes environments. A data center manager reported it powering a rack of blade servers for over 10 minutes at half load during an outage, allowing safe shutdowns. Another user in a medical lab noted the pure sine wave output ensured flawless operation of sensitive diagnostic equipment. The LCD panel and remote management are frequently highlighted for simplifying monitoring, though some users mention the unit’s weight complicates installation without proper planning.
Conclusion
The APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI) is a top-tier UPS for organizations that cannot afford power interruptions. Its double-conversion topology, high power capacity, and advanced features like scalable runtime and remote management make it a cornerstone for data centers, medical facilities, and industrial applications. While its cost, weight, and setup complexity may deter smaller setups, its reliability and flexibility justify the investment for mission-critical systems.
If you need uncompromising power protection for high-density equipment, the SURT20KRMXLI delivers performance, scalability, and peace of mind. Ensure your infrastructure stays online—invest in the APC Smart-UPS RT 20kVA today.
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