In the demanding landscape of enterprise data centers, medical facilities, and light industrial operations, where power failures can spell catastrophe, the APC Smart-UPS RT 15kVA RM 230V (SURT15KRMXLI) delivers unyielding protection. This rackmount double-conversion online UPS, occupying a 12U space, provides 15kVA/12kW of high-density power conditioning, ensuring zero interruption for critical loads like server racks and telecom gear. With its scalable runtime and advanced monitoring, it’s a staple for environments requiring robust, 230V-compatible solutions. Even in October 2025, though facing limited new stock due to its mature status, refurbished units remain viable for cost-effective deployments. Let’s delve into what makes this beast a reliable guardian.
Key Specifications at a Glance
The SURT15KRMXLI is optimized for 3-phase input flexibility and single-phase output, blending power with precision. Here’s a breakdown of its core specs:
| Specification | Details |
|---|---|
| Capacity | 15kVA / 12kW |
| Input Voltage | 230/400V 3PH nominal; range 160–280V; 40–70 Hz auto-sensing |
| Output Voltage | 230V (configurable: 220V, 240V, or 380/400/415V 3PH) |
| Outlets | 8x IEC 320 C19, 2x IEC Jumpers; Hardwire 3/5-wire options |
| Waveform | Pure sine wave (<5% distortion) |
| Transfer Time | 0 ms (double-conversion online) |
| Efficiency | Up to 95% at full load; 93% in battery mode |
| Surge Protection | 0.3% IEEE let-through; full-time multi-pole EMI/RFI filtering |
| Battery Type | Sealed lead-acid VRLA (RBC44 x4; scalable with SURT192RMXLBP2 packs) |
| Recharge Time | 2.5 hours to 90% |
| Dimensions (H x W x D) | 53.3 x 43.2 x 77.3 cm (12U rackmount) |
| Weight | 247.73 kg (net); 314.09 kg (shipping) |
| Operating Temp | 0–40°C; 0–95% humidity (non-condensing) |
| Warranty | 1 year (repair or replace) |
These figures, certified to EN/IEC 62040-2 and VDE standards, position it for global, high-stakes use.
Standout Features That Drive Reliability
The “RT” in Smart-UPS RT highlights its Rack/Tower versatility and real-time online topology, which continuously converts AC to DC and back, isolating loads from all grid disturbances.
Zero-Transfer Double Conversion
With 0 ms transfer and frequency sync (±3 Hz, adjustable ±0.1 Hz), it handles inrush currents via a 3:1 crest factor, ideal for PF-corrected servers. Built-in static and internal bypasses (auto/manual) ensure seamless maintenance.
Scalable Battery and Runtime
Four internal RBC44 modules provide baseline protection, expandable with up to four SURT192RMXLBP2 external packs for marathon endurance. Precision charging and self-tests optimize VRLA life (3–5 years), with end-of-discharge at ±154V.
Intelligent Monitoring and Control
A multi-function LCD console displays load, runtime, and events, complemented by configurable alarms. Pre-installed AP9631 Network Management Card enables Web/SNMP/RJ-45 remote access, plus DB-9 RS-232 and SmartSlot for PowerChute integration. EPO support adds safety.
As a RoHS-compliant Green Premium product, it minimizes environmental impact with 2800 BTU/hr heat dissipation and 50 dBA noise—subtle for server rooms.
Performance in Action: Runtime and Real-World Reliability
Runtime scalability is a hallmark: At full load (12kW), it offers ~8.3 minutes for critical shutdowns. Half load (6kW) extends to 20–25 minutes, bridging typical outages. Add one external pack, and half-load jumps to over 50 minutes; max configuration supports hours at lighter draws (e.g., 4kW for 1+ hour).
In 2025 deployments, it excelled in a Nigerian data center, sustaining a 12-minute blackout for 10 servers without hiccups, thanks to <5% THD preventing instability. Efficiency curves show 95.3% at 75% load, cutting energy costs, though one user noted fan ramp-up at peaks for thermal management. Overload handling (60s at 125%, 30s at 150%) proves its grit under stress.
Easy Setup and Maintenance Tips
Rack it into a 19-inch enclosure (rails included), hardwire the 3/5-wire input (up to 90A/100A breaker), and connect via C19 outlets or jumpers for daisy-chaining. LCD-guided config sets output voltage and alarms in minutes; integrate AP9631 for network polling.
Maintenance is proactive: Monthly LCD self-tests, annual runtime calibration, and hot-swappable RBC44 swaps (no downtime). Dust filters quarterly, and store at -15–45°C. Full recharge post-discharge ensures projections; optional external bypass eases servicing.
Pros, Cons, and Who It’s For
Pros:
- High-density 12kW in 12U for space-strapped racks.
- Fully scalable runtime and zero-transfer isolation.
- Embedded network card for effortless remote oversight.
- Efficient, quiet operation in demanding environments.
Cons:
- Towering 248 kg weight requires team handling.
- Bulky 12U footprint suits dedicated racks only.
This UPS thrives in mid-to-large data centers, medical labs, or industrial networks protecting 8–12 servers at 80% load for 10+ minutes. For smaller scales, downsize to 5–10kVA RTs; hyperscale ops may prefer modular systems.
Wrapping Up: Fortifying Your Core Operations
The APC Smart-UPS RT 15kVA RM 230V (SURT15KRMXLI) embodies enduring engineering for 2025’s volatile power grids, blending raw capacity with smart scalability to uphold enterprise continuity. Whether expanding your colocation or industrial setup, it turns vulnerabilities into strengths—source FROM US @ TIACO TECHNOLOGIES.
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