APC Smart-ups On-line - UPS - Rack/tower - 8 NEMA 5-20R 4 NEMA L6-20R 2 NEMA L6- - SRT5KXLT-5KTF

APC by Schneider Electric SRT5KXLT-5KTF Online Double-Conversion Rack/Tower UPS

Overview

The APC by Schneider Electric SRT5KXLT-5KTF is a 5 kVA / 4.25 kW double-conversion online UPS designed for mixed-outlet environments where both 120V and 240V loads need clean, regulated power from a single chassis. The rack/tower convertible form factor makes it equally at home in a server rack or a wiring closet floor installation — a practical consideration for smaller machine rooms that don't have a dedicated UPS bay.

Double-conversion (online) topology means utility power never passes directly to the load. Incoming AC is rectified to DC, filtered, and re-synthesized as a pure sine wave — so every connected device sees regulated, conditioned power at all times, not just during a utility event. If the utility drops, the transition to battery is zero-milliseconds; the inverter was already carrying the load.

Key Features

• Double-Conversion Online Topology: The SRT5KXLT-5KTF runs in continuous double-conversion mode — the inverter is always active, not standing by. This eliminates the transfer-time risk that line-interactive UPS units carry and ensures sensitive loads (PLCs, NVRs, network switches) never see a voltage sag or switchover spike.
• 5 kVA / 4.25 kW Output Capacity: At an 85% power factor (4.25 kW real power), this unit handles a meaningful multi-rack or mixed-load distribution. Enough headroom for a 10-15 node small data room, a surveillance head-end with recording servers, or a broadcast/AV infrastructure rack.
• Pure Sine Wave Output: Sine wave output (not stepped approximation) is required for power-factor-corrected (PFC) power supplies common in servers, workstations, and modern network equipment. A non-sine UPS into a PFC supply causes efficiency losses, heat, and in some cases equipment damage. The SRT5KXLT-5KTF outputs a true sine wave regardless of operating mode.
• Wide Input Voltage Range (100–275 V) with AVR: Automatic Voltage Regulation across 100–275V input means the unit can absorb long-duration sags and swells without switching to battery, which directly extends battery service life. The 40–70 Hz input frequency tolerance also accommodates international power conditions — useful in facilities with generator sets that don't regulate tightly.
• 93.4% Efficiency: At 93.4% operating efficiency, heat dissipation and operating cost are kept in check for a unit running 24/7. In a data center context, efficiency directly affects cooling load and annual operating cost — even a 2–3 point efficiency gain across multiple UPS units compounds over a 3–5 year asset lifecycle.
• Mixed Outlet Configuration (8x NEMA 5-20R, 4x NEMA L6-20R, 2x NEMA L6-30R): The outlet mix supports both 120V (NEMA 5-20R) and 240V (L6-20R, L6-30R) loads from a single UPS — practical when consolidating server and network gear that ships with different plug types. No PDU adapter chains needed for common configurations.
• 480 J Surge Energy Rating: 480 joules of surge absorption handles most utility-side transients and switching surges. Combined with the online topology (which isolates the load from the input continuously), surge events upstream don't reach connected equipment.
• Emergency Power Off (EPO): EPO support means the unit can be integrated into facility-level emergency shutdown circuits — a code requirement in many commercial and data center environments. Plan the EPO wiring during rough-in, not after equipment is live.
• 2% Output Voltage THD: Output Total Harmonic Distortion at 2% is well within the tolerances of sensitive electronic loads. High THD on UPS output is a known cause of unexplained equipment failures and NIC/controller brownouts — 2% is a clean number.
• 55 dB Noise Level: At 55 dB, this unit is audible in a quiet office but appropriate for a machine room or wiring closet. Not suitable for open office or conference room deployment without acoustic mitigation.
• Overload Protection: Built-in overload protection sheds or alarms before the UPS reaches a fault condition, preventing a cascading shutdown of the entire load bank during a partial load spike.

Integration and Compatibility

The SRT5KXLT-5KTF is a member of the APC Smart-UPS On-Line SRT family, which supports APC's Power & UPS management ecosystem including SmartConnect cloud monitoring and AP9630/AP9631 Network Management Cards (sold separately). The mixed outlet plate accommodates standard 120V IEC C13/C15-adapted loads via NEMA 5-20R receptacles alongside 240V equipment on the twist-lock L6 outlets.

For surveillance and physical security deployments, this unit pairs naturally with network video recorders and server-grade recording platforms that demand zero-transfer-time protection. The EPO terminal supports integration with building management systems and fire suppression interlock panels. Review your facility's branch circuit capacity before installation — a 5 kVA online UPS at full load draws significant amperage on the input side, and input cable sizing must account for continuous-duty NEC derating.

Frequently Asked Questions

Q: What is the difference between the SRT5KXLT-5KTF and a standard line-interactive UPS?

A: The SRT5KXLT-5KTF uses double-conversion (online) topology — the inverter runs continuously, so connected equipment never experiences a transfer time when power fails. Line-interactive UPS units switch to battery on an outage, with a typical 2–10ms transfer window. For sensitive servers, PLCs, or recording systems, zero transfer time is the operative advantage.

Q: Does the SRT5KXLT-5KTF output a true sine wave?

A: Yes. The SRT5KXLT-5KTF produces a pure sine wave output in all operating modes — on utility, on battery, and during voltage regulation events. This is required for compatibility with active PFC power supplies found in most current servers and enterprise networking equipment.

Q: What is the input voltage range the SRT5KXLT-5KTF can accept?

A: The unit accepts input voltages from 100V to 275V at 40–70 Hz. The built-in Automatic Voltage Regulation (AVR) corrects sags and swells across this range without switching to battery, which helps preserve battery life in unstable utility environments.

Q: Can the SRT5KXLT-5KTF be integrated into a facility emergency shutdown system?

A: Yes. The unit includes an Emergency Power Off (EPO) terminal for integration with facility-level emergency shutdown circuits. This is commonly required by electrical codes in commercial data rooms and server closets. EPO wiring should be planned during the installation phase.

Q: How loud is the SRT5KXLT-5KTF during normal operation?

A: The unit operates at 55 dB under normal conditions. This is acceptable for a dedicated machine room or wiring closet but is audible in a quiet office setting. Factor acoustic placement into your installation planning if the unit will be near workstations or meeting spaces.

Q: What is the real power output of the SRT5KXLT-5KTF?

A: The SRT5KXLT-5KTF is rated at 5 kVA apparent power with 4.25 kW real power output. When sizing your load, use the real power (kW) figure against your equipment's actual watt draw — not the VA rating — to determine whether this unit has adequate headroom for your deployment.

Eden Phillips

The spec I keep coming back to on the SRT5KXLT-5KTF is the 93.4% operating efficiency — in a double-conversion unit, that's genuinely good. Most online UPS designs run 88–92%; that gap matters when the unit is pulling full load around the clock and you're paying for cooling. For a surveillance head-end or small data room running 24/7, the efficiency spec directly affects your annual power bill and the HVAC sizing conversation.

Technical Highlights:

• Double-Conversion at 5 kVA / 4.25 kW: The inverter runs full-time — no transfer window, no switchover event. Connected recorders, switches, and servers never see the utility fail. 4.25 kW real power gives you enough headroom for a 10–15 device rack without oversizing into a 10 kVA unit.
• 100–275V Input Range with AVR: AVR absorbs sags and swells across a 175V input window before touching battery. In a building with aging electrical infrastructure or generator-backed power, this is what keeps the batteries healthy over a 3–5 year replacement cycle.
• 2% Output THD: 2% total harmonic distortion on the output is a meaningful spec — high-THD UPS output is a documented cause of unexplained NIC failures and intermittent controller lockups. At 2%, this unit is clean enough for the most sensitive IT loads.

Deployment Considerations:

• The EPO terminal needs to be wired during rough-in — don't leave it for punch-out. Many AHJs require EPO integration in commercial machine rooms; check local code before assuming it's optional.
• At 55 dB, this is a machine room unit. If your security head-end doubles as an open office or dispatch center, plan for acoustic separation or a dedicated enclosure — 55 dB sustained is fatiguing in shared spaces.

This unit is the right fit for a commercial surveillance or IT head-end where mixed 120V/240V outlet distribution, zero-transfer-time protection, and continuous online operation are non-negotiable — particularly in facilities where generator-backed utility power creates input voltage instability that would hammer a lesser UPS's battery on every generator cycling event.