APC by Schneider Electric SRT1500UXI-NCLI Smart-UPS SRT 1500VA Online Double-Conversion UPS
Overview
The SRT1500UXI-NCLI is APC's 1500VA / 1350W double-conversion online UPS designed for 230V environments where zero transfer time to battery is non-negotiable. Unlike line-interactive designs that switch over on sag, a true double-conversion topology continuously regenerates output power — meaning your loads never see the raw input waveform. This unit ships without internal batteries and pairs with external lithium-ion extended battery packs (XBP), which is what the '-NCLI' designation signals: no batteries included, lithium-ion XBP compatible. For installations where runtime is sized per-deployment rather than factory-fixed, that flexibility matters.
This unit targets IT closets, edge compute nodes, small server rooms, and surveillance NVR stacks running on 230V infrastructure — anywhere power protection must be transparent to connected equipment. If you're specifying power protection for a multi-camera NVR or a managed PoE switch stack, the SRT1500UXI-NCLI's 1350W capacity covers a meaningful load tier without overprovisioning.
Key Features
- Double-Conversion Online Topology: Power flows through the inverter continuously, not just during events. Transfer time to battery is effectively zero — no momentary dip that resets connected equipment. For NVRs mid-write or network switches managing active sessions, this distinction is real.
- 1350W / 1500VA Output Capacity: Enough headroom for a mid-size surveillance recorder, a PoE switch, and ancillary networking gear simultaneously. Size your connected load to stay below 80% (roughly 1080W) for thermal margin.
- Pure Sine Wave Output, 2% THD: Output voltage Total Harmonic Distortion holds at 2% — well within what active PFC power supplies in servers and network appliances require. Simulated sine wave UPS units can cause instability or premature PSU failure with modern switching power supplies; this unit does not have that problem.
- Wide Input Voltage Range (80–240V), 40–70Hz Input Frequency: The SRT1500UXI-NCLI will operate on brown-down conditions to 80V without switching to battery. That's meaningful in regions or facilities with chronic undervoltage — it extends runtime because the battery isn't constantly cycling during shallow sags.
- Lithium-Ion XBP Compatible, No Internal Batteries: Pairing with lithium-ion battery packs rather than VRLA gives longer calendar life (typically 8–10 years vs. 3–5 for VRLA), lighter weight, and hot-swap capability depending on the XBP model selected. Runtime is configured at the system level by the number and capacity of XBPs installed.
- 8 IEC C13 Outlets + C14 Input Coupler: All outlets are IEC C13 — standard for 1U and 2U rack-mount server and networking hardware. The C14 input coupler connects to your facility PDU without a custom cable. No NEMA adapters needed in a properly wired 230V rack environment.
- 340J Surge Energy Rating: Upstream surge suppression is built in. Not a replacement for a dedicated surge protection device on sensitive loads, but it absorbs transients that make it past facility protection.
- USB Connectivity: A USB management port supports signaling to connected servers for graceful shutdown sequencing. Pair with APC PowerChute software or a compatible UPS driver for automated OS-level shutdown on extended outages — critical for NVRs where abrupt power loss mid-write can corrupt recording indexes.
- 50 dB Operating Noise: Measurably quieter than older ferro-resonant designs. In a small IT closet or office-adjacent wiring room, 50 dB is noticeable but not intrusive — roughly the level of a quiet conversation.
- 450 BTU/h Heat Dissipation: Plan for roughly 132W of heat output at full load when sizing rack or room cooling. In a sealed comms closet, this matters for thermal planning alongside the connected load's own heat output.
Integration & Compatibility
The SRT1500UXI-NCLI integrates into standard 230V rack environments via its C14 input coupler and delivers eight C13 outputs — compatible with virtually all rack-mount IT and network video recorder equipment sold for the 230V market. The USB port provides UPS-to-server communication for shutdown automation; APC's PowerChute Business Edition and Network Shutdown are the primary software options. For network-managed shutdown across multiple servers, an optional APC network management card (sold separately) slots into the UPS's SmartSlot to add SNMP and web-based monitoring — making this unit manageable from a network management perspective without requiring a dedicated serial or USB connection per host.
Because this unit ships without batteries, it must be paired with compatible APC Smart-UPS SRT lithium-ion external battery packs before it will provide backup runtime. Confirm XBP compatibility with the specific SRT1500 series before ordering — APC's compatibility selector is the authoritative source for XBP model pairing. The SRT1500UXI-NCLI (often searched as SRT1500UXI NCLI) is designed for the European and international 230V market; confirm your facility input voltage and outlet standards before deployment.
Frequently Asked Questions
Q: Does the SRT1500UXI-NCLI include batteries?
A: No. The '-NCLI' designation explicitly means no internal batteries are included. This unit requires compatible APC Smart-UPS SRT lithium-ion external battery packs (XBP) to provide runtime. It will not supply backup power until XBPs are connected and charged.
Q: What output voltage does the SRT1500UXI-NCLI deliver?
A: Output is regulated between 220V and 240V at 50 or 60Hz, independent of input fluctuations. The double-conversion topology continuously regenerates the output waveform, so connected equipment sees stable voltage even when input varies from 80V to 240V.
Q: What type of output waveform does this UPS produce?
A: Pure sine wave with 2% Total Harmonic Distortion. This is required for reliable operation with servers and networking equipment that use active PFC power supplies — simulated sine wave would not be appropriate for this application.
Q: How many and what type of outlets does the SRT1500UXI-NCLI have?
A: Eight IEC C13 output outlets and one IEC C14 input coupler. This is the standard rack equipment connector type for 230V markets. No NEMA outlets are present — this unit is designed for international 230V infrastructure.
Q: Can I add network management to the SRT1500UXI-NCLI?
A: Yes. The UPS includes a USB port for local host communication. For full SNMP/web-based network management, an optional APC network management card (sold separately, installs in the SmartSlot) enables remote monitoring and multi-host graceful shutdown signaling.
Q: What is the maximum connected load this UPS can support?
A: 1350 watts / 1500VA. For thermal margin and to avoid running near capacity continuously, plan your connected load at no more than 80% of rated output — approximately 1080W in practice.
The SRT1500UXI-NCLI sits in a specific and deliberate product position: a double-conversion online UPS chassis that ships battery-less, sized for the 230V market, and engineered around lithium-ion XBP runtime packs rather than internal VRLA. I spec this unit when a customer needs to right-size runtime separately from UPS capacity — particularly in edge deployments where rack weight limits matter or where battery replacement cadence is a managed cost. The 1350W output capacity and 2% THD sine wave output make it a clean power source for active-PFC server PSUs and high-density PoE switch loads without compromise.
Technical Highlights:
- Zero Transfer Time: True double-conversion means 0ms switchover — no brownout, no reset cycle on connected NVRs or switches. In surveillance applications, this prevents recording gaps and index corruption that can happen even on 8–20ms transfer-time line-interactive units.
- 80–240V Input Range at 40–70Hz: The wide input window keeps the UPS on utility power through deeper sags than most competing units, preserving battery capacity for genuine outages rather than routine undervoltage events common in industrial and developing-market facilities.
- IEC C13/C14 All-Outlet Configuration: All 8 outlets are C13 — no mixed NEMA/IEC layout to manage. In a 230V rack, this eliminates adapter clutter and simplifies PDU-to-UPS-to-device cable management. The C14 input fits any standard rack PDU whip directly.
Deployment Considerations:
- This unit ships with no batteries and will not provide backup runtime until compatible SRT lithium-ion XBPs are installed and fully charged — confirm XBP compatibility against APC's current selector before finalizing the order, as XBP models are generation-specific.
- At full load, plan for 450 BTU/h (roughly 132W) of added heat in your rack or enclosure thermal budget. In a sealed comms closet or small IDF, this stacks with connected load heat output and can push ambient temperatures above equipment ratings if airflow isn't calculated correctly.
This is the right unit for a 230V edge IT room or surveillance head-end where runtime needs to be field-configurable, active-PFC loads are in the rack, and you want true online protection without the VRLA replacement cycle. It's not the right pick if you need a self-contained, batteries-included solution out of the box.
