In modern data centers, medical facilities, and industrial environments, reliable power protection is critical to ensuring uninterrupted operations. The APC Smart-UPS On-Line 20kVA/20kW Rack/Tower (SRTG20KXLI) by Schneider Electric is a high-density, double-conversion UPS designed to deliver robust power backup and surge protection for mission-critical systems. This blog explores the features, benefits, applications, and considerations of the SRTG20KXLI, providing insights for IT professionals, facility managers, and businesses seeking dependable power solutions.
What is the APC Smart-UPS On-Line SRTG20KXLI?
The APC Smart-UPS On-Line SRTG20KXLI is a 20kVA/20kW uninterruptible power supply that offers double-conversion, online power protection in a versatile 4U rack/tower convertible form factor. Designed for high-power applications, it supports servers, voice and data networks, medical labs, and light industrial setups. With a unity power factor (VA=W), it maximizes power delivery, making it ideal for power-hungry equipment like blade servers and heavily loaded racks.
Key Features of the SRTG20KXLI
- 20kVA/20kW Capacity: Delivers 20,000W of power with a unity power factor, supporting high-density loads. Runtime is approximately 3 minutes at full load (20kW), extendable with up to four external battery packs (SRTG192XLBP2).
- Double-Conversion Online Topology: Provides zero transfer time and pure sine wave output, ensuring clean, consistent power for sensitive equipment, even during voltage fluctuations (160V–480V input range).
- Flexible Input/Output Configurations: Supports single-phase (1P+N+E) and three-phase (3P+N+E) hardwired inputs and outputs, with one IEC C19 outlet for compatibility with various electrical setups.
- Pre-Installed Network Management Card (AP9641): Enables remote monitoring and control via web, SNMP, or EcoStruxure IT, with advanced security features like HTTPS/SSL and SNMPv3.
- Multi-Color LCD Display: Offers an intuitive interface for local configuration and real-time monitoring of input/output voltage, load, battery status, and runtime.
- High Efficiency Green Mode: Achieves over 98% efficiency, reducing utility and cooling costs without compromising reliability.
- Scalable Runtime: Supports up to four external battery packs for extended runtime, ideal for applications requiring hours of backup power.
- Emergency Power Off (EPO): Allows remote shutdown during emergencies, enhancing safety.
- Environmental Compliance: Certified with Schneider Electric’s Green Premium label, ensuring RoHS/REACH compliance, transparency on environmental impacts, and recyclable packaging (minimum 70% recycled cardboard).
- Warranty: Includes a three-year repair-or-replace warranty for electronics and two years for the battery (APCRBC172).
Benefits of the SRTG20KXLI
1. Uncompromising Power Protection
The double-conversion topology ensures zero transfer time, delivering clean power to critical devices. This is crucial for environments like medical labs or data centers, where even a millisecond of downtime can be costly. Users report seamless operation during power outages, with one stating, “It kept our blade servers running flawlessly during a 10-minute blackout.”
2. High Power Density
With a unity power factor, the SRTG20KXLI delivers maximum usable power (20kW), making it ideal for high-density racks and power-hungry equipment. Its 4U design optimizes space in data centers.
3. Advanced Remote Management
The pre-installed AP9641 Network Management Card supports remote monitoring and graceful shutdowns via PowerChute Network Shutdown software, certified for VMware, Nutanix, and Hyper-V environments. This reduces the need for on-site intervention, saving time and costs.
4. Energy Efficiency
The Green Mode achieves over 98% efficiency, lowering operational costs. This is particularly valuable for large-scale deployments where energy savings translate to significant financial benefits.
5. Scalability and Flexibility
The ability to add up to four external battery packs and support both single- and three-phase configurations makes the SRTG20KXLI adaptable to diverse environments, from small IT closets to large industrial setups.
Practical Applications
- Data Centers: Powers blade servers, storage systems, and networking equipment, ensuring uptime for critical applications. Its scalable runtime supports extended outages.
- Medical Labs: Provides clean power for sensitive diagnostic equipment, preventing data loss or equipment damage during power fluctuations.
- Light Industrial Applications: Protects manufacturing control systems and automation equipment in environments with unstable power grids.
- Enterprise Networks: Safeguards voice and data networks, including VoIP systems and routers, in large offices or distributed IT setups.
- Surge-Prone Regions: Offers robust surge protection (up to 480V input tolerance) for areas with frequent lightning or power instability, as noted by users in regions like South Africa.
Considerations and Limitations
While the SRTG20KXLI is a premium UPS, there are some considerations:
- No Rail Kit Included: The rack-mounting kit (SRTGRK1) is sold separately, increasing setup costs for rack installations.
- Weight and Space: At 132 kg and 4U, it requires sturdy rack infrastructure and ample space, which may be challenging for smaller setups.
- Battery Replacement Costs: The APCRBC172 battery is costly, and replacements every 2–3 years can add to long-term expenses. Users recommend budgeting for maintenance.
- Complex Installation: Hardwired 3- and 5-wire configurations require professional electrical setup, which may increase deployment time and costs.
- Noise Levels: The unit’s cooling fans can be audible (up to 55 dBA), which may be disruptive in quiet environments like small offices.
User Feedback
The SRTG20KXLI is highly rated for its reliability and performance. One IT manager shared, “The network card and PowerChute software made remote management a breeze for our data center.” Another user praised its scalability, noting, “Adding external battery packs gave us hours of runtime for our servers.” However, some users mention the high cost and complexity of installation as drawbacks, with one stating, “It’s fantastic but requires a skilled electrician for setup.” Online reviews average 4.5/5, reflecting strong satisfaction tempered by cost concerns.
Tips for Optimal Use
- Professional Installation: Hire a certified electrician for hardwired connections to ensure compliance with local electrical codes.
- Battery Maintenance: Schedule regular battery tests via the LCD interface or PowerChute software to monitor health and plan replacements.
- Ventilation: Ensure adequate airflow around the unit to prevent overheating, especially in rack setups.
- Network Integration: Configure the AP9641 card for remote monitoring and set up email alerts for power events to enable proactive management.
- Runtime Planning: Calculate your load (via APC’s online runtime calculator) and add external battery packs if extended runtime is needed.
Conclusion
The APC Smart-UPS On-Line 20kVA/20kW Rack/Tower (SRTG20KXLI) is a top-tier UPS solution for businesses requiring high-density power protection. Its double-conversion topology, unity power factor, and advanced management features make it ideal for data centers, medical labs, and industrial applications. While the high cost, lack of a rail kit, and installation complexity are considerations, its reliability, scalability, and energy efficiency justify the investment for mission-critical environments. For organizations prioritizing uptime and equipment safety, the SRTG20KXLI delivers unmatched performance.
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