APC by Schneider Electric SRYL15K20XLT18 15kW Scalable Modular Tower UPS
Overview
The APC by Schneider Electric SRYL15K20XLT18 is a 15kW modular uninterruptible power supply configurable up to 20kW with N+1 redundancy — built for enterprise environments where a single-point UPS failure is not an acceptable outcome. The tower form factor houses the power and battery modules in a single 942 mm chassis, keeping the footprint manageable without sacrificing capacity headroom.
At 491.6 lb (223 kg), this is a floor-standing unit requiring planned placement and structural consideration during installation — not a rack-slide-in. Plan load path and final positioning before delivery.
Key Features
- 15kW capacity, scalable to 20kW: Start at 15kW and add capacity modules to reach 20kW without replacing the chassis — useful when phased IT build-outs make it impractical to size for peak load on day one.
- N+1 redundant topology: An additional power module stays in reserve so that if any active module fails, load transfers to the redundant module without interruption. This is the architecture to specify when downtime has a direct cost.
- Lithium-Ion battery chemistry: Li-Ion cells offer a longer service life and faster recharge compared to conventional VRLA — relevant for sites where battery replacement labor is expensive or access is difficult.
- Pure sine wave output: Delivers clean 120V AC sine wave power, compatible with sensitive electronics, variable-speed drives, and power-factor-corrected loads that would fault or degrade on simulated sine wave sources.
- 208/240V input: Accepts the standard dual-leg commercial input found in US data rooms and mechanical spaces — no step-down transformer required when fed from a standard 208V PDU or panel.
Frequently Asked Questions
Q: What is the output voltage of the SRYL15K20XLT18?
A: The SRYL15K20XLT18 outputs 120V AC in pure sine wave form.
Q: Can the SRYL15K20XLT18 be expanded beyond 15kW?
A: Yes — it is designed to scale from 15kW to 20kW through additional capacity modules, allowing incremental expansion without chassis replacement.
Q: What battery technology does the SRYL15K20XLT18 use?
A: It uses Lithium-Ion (Li-Ion) batteries, which typically offer longer service life and faster recharge rates compared to traditional VRLA battery technology.
Q: What is the input voltage requirement for the SRYL15K20XLT18?
A: The unit accepts 208V AC input, standard for commercial dual-leg power distribution in US data centers and server rooms.
Q: How much does the SRYL15K20XLT18 weigh, and what are the installation implications?
A: The unit weighs 491.6 lb (223 kg). Floor load capacity and delivery access must be evaluated before installation — this is not a unit that can be repositioned casually after placement.
The SRYL15K20XLT18 sits at a capacity tier — 15kW scalable to 20kW — that covers a surprising range of edge data rooms and mid-density IT closets without requiring a purpose-built data center. The N+1 redundant module architecture is the spec I'd emphasize to anyone specifying power for a site where calling in an emergency service window carries a four-figure labor cost before parts.
Technical Highlights:
- N+1 Redundancy: A dedicated standby module absorbs load instantly if any active module faults — critical in environments where an unplanned outage triggers SLA penalties or production stoppage.
- Li-Ion Battery Chemistry: Longer cycle life versus VRLA means fewer scheduled battery swap events over the UPS service life — a real operating cost difference in remote or hard-to-access facilities.
- Pure Sine Wave Output at 120V AC: Clean waveform protects variable-speed drives, server PSUs with active PFC, and medical-grade equipment from the waveform distortion that trips overcurrent protection on cheaper UPS designs.
Deployment Considerations:
- At 491.6 lb (223 kg), coordinate with facilities on floor loading, pallet jack clearance, and final-position access before the unit arrives — rerouting a nearly quarter-ton UPS after delivery is a costly delay.
- The 208V AC input is standard for commercial panels but confirm available amperage on your feed circuit before ordering — a 15kW continuous load at 208V draws roughly 83A, requiring a dedicated appropriately rated breaker and conductor.
This unit is well-matched to edge deployments — branch office server rooms, on-premise security head-end closets, or manufacturing floor IT nodes — where you need data-center-class redundancy but can't justify a full raised-floor build-out.
