APC Smart-ups Modular Ultra 15KW Frame N+1 Redundant Tower 208/240V 24U Rack - SRYLF15T24

APC by Schneider Electric SRYLF15T24 Smart-UPS Modular Ultra 15kW N+1 Redundant Tower UPS

Overview

The SRYLF15T24 is APC's 15kW online double-conversion tower UPS built for IT environments where a single power module failure cannot be allowed to interrupt operations. The frame ships ready to accept N+1 redundancy — meaning one module can fail or be swapped while the remaining modules continue supplying clean power to the load. If you're sizing for a rack or tower UPS in a dense compute room, data closet, or edge deployment that demands lithium-ion longevity and scalable capacity, the SRYLF15T24 sits at the premium end of the APC by Schneider Electric tower UPS line.

Key Features

• Online Double-Conversion Topology: Power passes through the inverter continuously — not just on sag or outage — so the connected load never sees raw utility power. Voltage spikes, frequency drift (accepted from 40–70 Hz), and waveform distortion are all scrubbed before reaching your equipment.
• N+1 Redundant Power Architecture: The optional N+1 scheme means the frame carries one more power module than the load requires. Pull any single module for hot-swap service and the UPS doesn't even blink. For a critical power infrastructure deployment with no scheduled maintenance windows, this is the correct topology.
• Scalable to 15kW: Capacity can be matched to actual load rather than worst-case projections. Start smaller and add modules as IT density grows — capital expenditure tracks actual need instead of peak theoretical demand.
• Lithium-Ion Battery Chemistry: Compared to VRLA, lithium-ion holds charge through more discharge cycles, tolerates wider ambient temperature swings, and occupies less footprint per kilowatt-hour. Longer service intervals mean fewer planned outages for battery replacement.
• Internal Bypass: A built-in bypass path lets utility power feed the load directly if the UPS electronics need service. Combined with N+1 module redundancy, this gives facilities staff two independent paths to maintain uptime during maintenance — without a separate external bypass switch.
• 208/240V Input and Output: Single-phase 208V input (hardwired 4-wire: 2PH+N+G) with 240V output covers standard North American high-density rack power configurations. No step-up transformer required for 240V PDUs.
• 24U Tower Form Factor: At 23.6 in wide, the frame fits standard equipment rooms without requiring a dedicated rack bay. The 353 lb shipping weight reflects a fully outfitted frame — plan floor loading accordingly and confirm your freight approach before delivery.

Integration & Compatibility

The SRYLF15T24 uses a hardwired 4-wire single-phase input, so a licensed electrician and a dedicated 208V circuit are prerequisites — this is not a plug-in UPS. Output at 240V is suited for high-density rack PDUs and direct equipment connections in controlled environments. APC's EcoStruxure platform and network management cards (sold separately) integrate with building management systems and DCIM tools for remote monitoring, load reporting, and predictive battery health. Verify module and battery compatibility with APC's published configuration guides for this frame before ordering expansion modules.

Frequently Asked Questions

Q: What is the input voltage requirement for the SRYLF15T24?

A: The SRYLF15T24 requires a single-phase 208V AC input, hardwired via a 4-wire connection (2PH+N+G). It accepts input frequencies from 40 to 70 Hz.

Q: What battery type does the SRYLF15T24 use?

A: It uses lithium-ion batteries, which offer longer cycle life and reduced maintenance intervals compared to traditional VRLA designs.

Q: Can the SRYLF15T24 operate while a power module is being replaced?

A: Yes — the N+1 redundancy scheme allows one module to be removed or serviced while the remaining modules continue supplying the load, eliminating forced downtime for module maintenance.

Q: What is the warranty on the SRYLF15T24?

A: APC covers the SRYLF15T24 with a 5-year limited warranty covering repair or replacement.

Q: Does the SRYLF15T24 require professional installation?

A: Yes. The hardwired 4-wire input means a licensed electrician must terminate the input circuit. This is not a plug-and-play UPS — factor installation labor and a dedicated 208V circuit into your project budget.

Q: What is the output voltage of the SRYLF15T24?

A: The output voltage is 240V AC, suited for high-density rack PDUs and equipment requiring 240V in North American data environments.

Eden Phillips

The SRYLF15T24 is one of the few tower-form UPS platforms where N+1 redundancy isn't a marketing footnote — the frame is physically engineered around hot-swappable modules, and the internal bypass gives you a second layer of serviceability that most similarly-sized tower units simply lack. If you're commissioning a 15kW-class deployment in a space that can't accept a standard rack, this architecture is worth the premium over a fixed-capacity unit.

Technical Highlights:

• Online Double-Conversion: Continuous inverter path means zero transfer time to battery — critical for sensitive compute loads that can't tolerate even a half-cycle interruption during a utility event.
• Lithium-Ion Chemistry: Longer calendar life and wider thermal tolerance versus VRLA translates directly to fewer planned outages for battery replacement — meaningful when the UPS is protecting infrastructure with a 5-year or longer refresh cycle.
• 353 lb Shipping Weight: This is a floor-standing unit, not a rack-slide. Confirm structural floor loading (particularly in raised-floor environments), and coordinate liftgate freight — standard ground delivery trucks cannot safely offload this without equipment.

Deployment Considerations:

• The hardwired 4-wire 208V input (2PH+N+G) is non-negotiable — budget for a licensed electrician and a dedicated circuit breaker sized to the frame's full load capacity before the unit arrives on-site.
• The 240V output is correct for most North American high-density PDUs, but verify your downstream PDU input voltage tolerance before commissioning — a mismatch here causes a costly delay on go-live day.

This UPS is the right fit for a compact data center, edge compute room, or IT closet where rack real estate is constrained but uptime requirements match a full data center SLA — specifically, deployments where a module failure during off-hours cannot wait until the next maintenance window to resolve.