Vertiv PSI5-3000RT120LI Lithium-Ion Line-Interactive Rack/Tower UPS 3000VA/2700W
Overview
The Vertiv PSI5-3000RT120LI is a 3000VA/2700W lithium-ion line-interactive UPS built for IT closets, edge deployments, and security infrastructure racks where runtime efficiency, front-access serviceability, and clean power output matter more than chasing the lowest sticker price on a flooded-lead-acid unit. At 53.6 lbs with a 3.38-inch 2U profile, it fits standard 19-inch racks and converts to tower orientation when needed — the rotatable LCD panel follows the mounting, so your status display is always right-side up. If you're protecting surveillance NVRs, access control servers, or edge compute nodes that demand pure sinewave on battery, the PSI5-3000RT120LI belongs on your shortlist.
Key Features
- 3000VA / 2700W Power Rating: Headroom for dense 2U server loads, multi-camera NVR systems, or a mix of network gear and storage. At 0.9 power factor, the 2700W real-power ceiling keeps you from hitting the wall when inductive loads like drives spin up simultaneously.
- Lithium-Ion Chemistry: Li-ion cells run significantly longer between replacements than VRLA, tolerate higher ambient temperatures without accelerated degradation, and deliver a better weight-to-capacity ratio — relevant when you're already maxing out rail weight in a loaded rack.
- Pure Sinewave Output on Battery: Active PFC power supplies — standard in current server and NVR platforms — require true sinewave to operate correctly on battery. Stepped-approximation or simulated sinewave UPSs will cause load shutdowns or PSU alarms on PFC-equipped hardware. The PSI5 eliminates that failure mode entirely.
- Line-Interactive Topology with AVR (75–146VAC Range): Automatic voltage regulation corrects low voltage (down to 75VAC) and high voltage (up to 146VAC) without switching to battery — keeping runtime in reserve for actual outages rather than burning it on routine brownouts or utility swings common in older commercial buildings.
- User-Selectable Output Voltage (100/110/115/120/125VAC): Field-configurable output lets you tune to load requirements or compensate for site voltage quirks without rewiring — useful when commissioning mixed 110V/120V environments or deploying internationally with 120VAC source power.
- Hot-Swappable Battery Kits, Front Access: Battery replacement doesn't require pulling the unit from the rack or powering down protected loads — a significant operational advantage in 24/7 surveillance and access control environments where scheduled downtime windows are narrow or nonexistent.
- 98.4% Efficiency: At 0.984 efficiency, heat dissipation and operating costs stay low even under sustained load — meaningful in thermally constrained edge closets and wiring rooms where every watt of heat rejected is a watt the cooling system has to handle.
- Flexible Output Wiring (6 × 5-20R + 1 × L5-30R): Six standard 5-20R receptacles cover the majority of 1U/2U server and network loads; the twist-lock L5-30R handles higher-current single-load connections. Input is L5-30P — plan your PDU or wall receptacle accordingly before installation.
- Rotatable LCD Control Panel: The display physically rotates to remain readable in both rack and tower orientations — eliminates the upside-down status panel problem that plagues fixed-display units when redeployed from rack to tower or vice versa.
- IntelliSlot UNITY Communications Card (Optional): The optional Liebert IntelliSlot UNITY card enables SNMP and web-based remote management, integrating the UPS into your NMS or DCIM platform for remote monitoring, alerting, and graceful shutdown scripting. USB connectivity is built in for basic host-attached management without the card.
- EPO Connector: Emergency Power Off input supports facility-level emergency shutdown integration — a requirement in many data center and security operations center installations under NEC and local code.
- Regulatory Listings: UL 1778, c-UL-us, FCC Part 15 Class B, NOM, and UN38.3 (lithium battery transport safety) — covers US and Canadian deployments and satisfies most enterprise procurement checklists without additional variance requests.
Integration & Compatibility
The PSI5-3000RT120LI integrates into any standard 120VAC North American rack environment. The L5-30P input plug connects to matching L5-30R receptacles on rack PDUs or directly to wall outlets — confirm your PDU or branch circuit is rated for the input current draw before deployment. The optional Liebert IntelliSlot UNITY card enables SNMP v1/v2c/v3 and web management, making the unit visible to platforms like SolarWinds, PRTG, or any NMS that speaks SNMP traps. The built-in USB port supports NUT (Network UPS Tools) and most vendor UPS management software for graceful OS shutdown without the optional card. For deployments protecting network video recorders or edge security appliances, the pure sinewave output ensures compatibility with active PFC power supplies across all major server and NVR platforms. The EPO connector accepts dry-contact input from facility emergency shutdown systems. Explore the full Vertiv power protection line for complementary PDUs, environmental monitors, and extended battery modules. For planning runtime and capacity across a multi-device rack, consult our UPS sizing and runtime guide. If your deployment spans multiple racks, rack PDUs with metered outlets pair naturally with this unit for per-outlet load monitoring.
Frequently Asked Questions
Q: Does the PSI5-3000RT120LI output pure sinewave when running on battery?
A: Yes. The PSI5-3000RT120LI delivers pure sinewave output on battery — required for active PFC power supplies found in most current servers, NVRs, and network appliances. Simulated or stepped-approximation sinewave UPSs can cause shutdowns or PSU fault alarms on PFC hardware; this unit avoids that failure mode.
Q: Can the PSI5-3000RT120LI be used in both rack and tower orientation?
A: Yes. The unit supports both rack (2U, 19-inch standard) and tower deployment. The LCD control panel is physically rotatable so it reads correctly in either orientation — no tools required to reposition the display.
Q: Are the batteries hot-swappable without powering down connected loads?
A: Yes. The PSI5-3000RT120LI supports front-access hot-swappable battery kits, meaning battery replacement can be performed while the unit remains online and protecting connected equipment — an important capability for 24/7 security and surveillance environments.
Q: What communications interfaces does the PSI5-3000RT120LI support?
A: Built-in USB and an EPO connector are standard. Full SNMP and web-based remote management requires the optional Liebert IntelliSlot UNITY communications card, which installs into the dedicated expansion slot. Without the card, USB supports host-attached management and graceful shutdown software.
Q: What is the input voltage tolerance of the PSI5-3000RT120LI?
A: The unit accepts input from 75VAC to 146VAC nominal 120VAC via its line-interactive AVR stage — correcting under- and over-voltage conditions without switching to battery. This protects runtime for actual outages rather than consuming battery on routine utility fluctuations.
Q: What output receptacles does the PSI5-3000RT120LI provide?
A: Six NEMA 5-20R receptacles for standard load connections plus one NEMA L5-30R twist-lock receptacle for higher-current single loads. The input uses an L5-30P plug — your source PDU or wall circuit must have a matching L5-30R receptacle.
The spec I keep coming back to on the PSI5-3000RT120LI is that 75–146VAC input window combined with the line-interactive AVR stage. In the field, brownout-prone sites — older commercial buildings, industrial adjacencies, edge closets fed by long branch circuits — will run a lesser UPS ragged burning through battery cycles on every voltage dip below 100V. This unit rides through those events in AVR mode and saves the lithium cells for real outages.
Technical Highlights:
- 98.4% Efficiency: At that efficiency level, heat output under full load stays low enough to matter in sealed wiring closets — less heat means less thermal stress on everything else in the cabinet, and lower operating cost over a multi-year deployment.
- Hot-Swap Front-Access Batteries: In 24/7 security environments, the ability to swap batteries without a maintenance window is not a convenience feature — it's an operational requirement. Front access means you don't have to unrack a 53.6 lb unit to service it.
- Pure Sinewave + Active PFC Compatibility: Every modern NVR and edge server ships with an active PFC supply. The PSI5-3000RT120LI's pure sinewave battery output is the only correct answer for those loads — anything less risks PSU fault or unexpected shutdown at exactly the wrong moment.
Deployment Considerations:
- The L5-30P input plug is a hard requirement — confirm your rack PDU or wall circuit has a matching L5-30R receptacle before the unit ships to site. Retrofitting a receptacle after the fact adds cost and delay that's easy to avoid in pre-deployment planning.
- SNMP integration requires the optional IntelliSlot UNITY card — it does not come standard. If remote monitoring or graceful shutdown scripting is part of your deployment design, budget the card into the BOM upfront rather than discovering the gap during commissioning.
For a physical security operations center or a mid-density surveillance rack running 8–16 cameras plus an NVR and managed switch, the PSI5-3000RT120LI hits the right power and runtime profile while keeping battery replacement simple enough that a single technician can handle it without scheduling a downtime window.
