T91i Online UPS (2000-3000 VA, 208-240V) | Long-Runtime Tower
2000–3000 VA | 208–240V | Online Double Conversion
Long-runtime tower UPS engineered for global commercial, industrial, and distributed infrastructure requiring multi-hour backup power and continuous conditioned output.
2000–3000 VA · 208–240 VAC · Online Double-Conversion Tower UPS · Long Runtime
T91i long-runtime online tower UPS
The T91i is a 208–240 V online double-conversion tower UPS for global commercial, industrial, and distributed infrastructure where extended runtime is the primary requirement — beyond the limits of compact rack UPS. Unity output power factor means every VA is a usable watt, so a 3000 VA system carries a 3000 W load. Up to seven matching battery packs scale runtime past seven hours on light loads; and a programmable 2–8 A charger recharges to about 95% in three hours. Online topology delivers continuous conditioned power with zero transfer time. For 120 V, see the T91.
Long-runtime power for 208–240V
The T91i is designed for environments where outages extend beyond typical UPS runtime expectations — light industrial applications, point of sale, servers, voice and data networks, and laboratories. Unlike rack UPS optimized for short-duration protection, it adds up to seven matching battery packs and programmable charging to support multi-hour runtime, keeping infrastructure operational during prolonged outages or until backup generation is available. Online double-conversion topology delivers a pure sine wave with zero transfer time, isolating connected equipment from voltage disturbances across global 208–240 V environments.
What the T91i delivers
Unity output power factor (kVA = kW) means a 3000 VA system carries a 3000 W load. A competing 3000 VA UPS at 0.9 power factor delivers 2700 W, so size on watts rather than VA.
Add up to seven matching T91-BP72A battery packs to extend runtime from minutes to well past seven hours on light loads — a T91i-2000 at half load reaches 465 minutes with seven packs. Sized to load and continuity requirements.
A programmable charger, selectable from 2 to 8 A at the LCD, refills larger battery banks fast — about 95% in three hours — so the system is ready for the next outage instead of charging for a day.
Wide input voltage and frequency windows (110–300 VAC, 50/60 Hz auto-sensing) keep the T91i online through generator transfer and unstable utility — built for sites that ride through long events.
Programmable load shedding maximizes uptime for the most critical loads by dropping less-critical ones first, and an emergency power-off interface meets demanding application safety standards.
Best-in-class conditioning backed by a $50,000 connected-equipment load-protection policy, plus RS-232, USB, and optional Web/SNMP, Modbus, and relay/dry-contact cards for remote monitoring across sites.
The 208–240V long-runtime tower tier
The T91i is the long-runtime tower UPS for 208–240 V infrastructure — typically deployed floor-mounted or equipment-adjacent, across global commercial and industrial sites, wherever runtime requirements exceed rack-UPS capability. It is the 208–240 V counterpart to the 120 V T91.
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Choose the T91i for 208–240 V long-runtime protection in a floor-standing tower; the A70i or P80g where line-interactive protection is sufficient; or the M90Si-6S when the site needs modular capacity beyond a single tower. For 120 V, see the T91.
Tower runtime or rack density?
Rack UPS systems are typically optimized for density and short-duration runtime. The T91i is designed for applications where runtime is the primary requirement — its tower form factor supports larger battery systems and higher charging capacity, enabling significantly longer backup durations. For rack-based runtime at 208–240 V, the P91g provides scalable runtime in a rack chassis.
Replace legacy long-runtime UPS
The T91i is commonly deployed as a replacement for extended-runtime UPS platforms — APC Smart-UPS Online (208–240V tower configurations), Eaton 9PX / 9SX extended-runtime systems, and Vertiv Liebert GXT tower deployments — providing a simplified long-runtime architecture with scalable battery expansion and predictable deployment across global infrastructure.
T91i-3000 vs the Eaton 9SX at 3 kVA
The 9SX is the online double-conversion tower the T91i most directly replaces in 208–240 V deployments. Here they are at 3 kVA; the 2 kVA pairing follows the same pattern.
| Feature (3 kVA) | Xtreme T91i-3000 | Eaton 9SX3000I |
|---|---|---|
| Real power | 3000 W (unity PF) | 2700 W (0.9 PF) |
| Charger | Selectable 2–8 A (about 95% in 3 hr) | ABM-managed, not user-selectable rate |
| Battery expansion | Up to 7 matching packs | Up to 4 EBMs |
| Dimensions (W×D×H) | 7.4 × 16.5 × 12.5 in | 8.4 × 16.2 × 13.6 in |
| Weight | 66 lb | about 74 lb |
| TAA compliant | Yes | No |
| Warranty | 3 yr / 3 yr | 3 yr |
The T91i-3000 leads on usable watts (unity vs 0.9 PF — about 300 W more real power), a faster user-selectable charger, deeper runtime expansion (7 packs vs 4 EBMs), a smaller and lighter chassis, and standard TAA compliance; warranty is matched at 3 years in the USA and Canada; the T91i is 1 year outside. The 9SX brings Eaton’s ABM battery-management charging and a broad global service network. The T91i is also cross-shopped against APC Smart-UPS Online and Vertiv Liebert GXT. Eaton 9SX3000I figures are from published Eaton documentation; verify against current Eaton specifications for a quote.
Two models, 2000–3000 VA
| Model | Capacity (VA / W) | Dimensions (W×D×H) | Weight | Receptacles | Expansion |
|---|---|---|---|---|---|
| T91i-2000 | 2000 / 2000 | 7.4 × 16.5 × 12.5 in | 62 lb | (1) C19 + (8) C13 | Up to 7 packs |
| T91i-3000 | 3000 / 3000 | 7.4 × 16.5 × 12.5 in | 66 lb | (1) C19 + (8) C13 | Up to 7 packs |
Both models deliver unity output power factor (2000 / 3000 W) with selectable 200 / 220 / 230 / 240 V output and an 8 ft C19-to-L6-20P input cord. Internal battery is (6) 12V 9Ah; the matching external pack is the T91-BP72A (7.4 × 16.5 × 12.5 in, 82 lb), up to seven packs. Input range 110–300 VAC is load-dependent; capacities are based on the highest selectable output voltage.
Runtime by load and battery configuration
Estimated minutes at 50% and 100% load, from internal battery through seven external T91-BP72A packs. For the T91i-2000, 50% load is 1000 W and 100% is 2000 W; for the T91i-3000, 50% is 1500 W and 100% is 3000 W. Columns +1 through +7 are the number of external battery packs.
| Load | Internal | +1 | +2 | +3 | +4 | +5 | +6 | +7 |
|---|---|---|---|---|---|---|---|---|
| T91i-2000 · 2000 VA / 2000 W · up to 7 packs | ||||||||
| 100% load | 6 | 28 | 54 | 85 | 112 | 135 | 166 | 197 |
| 50% load | 16 | 68 | 124 | 181 | 245 | 312 | 369 | 465 |
| T91i-3000 · 3000 VA / 3000 W · up to 7 packs | ||||||||
| 100% load | 2 | 16 | 32 | 49 | 68 | 90 | 107 | 124 |
| 50% load | 9 | 40 | 80 | 116 | 150 | 191 | 234 | 278 |
Estimated minutes; values vary with battery condition, age, cycles, and ambient temperature. Up to seven matching T91-BP72A packs; internal battery recharges to about 95% in three hours at a 2 A charge current. For longer runtimes or specific configurations, contact Xtreme Power engineering at (800) 582-4524 or sales@xpcc.com.
Built for global extended-outage continuity
The T91i is deployed across light industrial systems, point of sale and retail operations, servers and voice/data networks, laboratory equipment, and global commercial environments — particularly where extended runtime is required to maintain operations during prolonged outages.
Long-duration backup for control and process equipment.
Continuity for POS, controls, and store systems during outages.
Extended ride-through for servers, switching, and routing.
Stable conditioned power for sensitive lab instruments.
Wide input windows for reliable transfer to standby generation.
208–240V deployment across distributed international sites.
Capacity guidance: 2000 VA for network infrastructure and laboratory equipment; 3000 VA for higher-load commercial and industrial systems.
T91i specifications
| Specification | Detail |
|---|---|
| Topology | Online double-conversion; pure sine wave, zero transfer time |
| Capacity | 2000 / 3000 VA at unity power factor (2000 / 3000 W) |
| Input | 208 VAC nominal (110–300 VAC, load-dependent), 50/60 Hz auto-sensing; input PF >0.99 at full load |
| Output | 208 VAC nominal (200 / 220 / 230 / 240 selectable), 50/60 Hz ≤1% |
| Efficiency | Up to 98% ECO mode, 92% online mode |
| Overload | >110–130% for 5 min; >130–140% for 30 s; >140% for 1.5 s |
| Battery | (6) 12V 9Ah internal; up to 7 T91-BP72A external packs (82 lb each) |
| Charger | 2 A default to 8 A, programmable from LCD; about 95% recharge in 3 hr (internal, 2 A) |
| Dimensions / weight | 7.4 × 16.5 × 12.5 in; 62 lb (2000) / 66 lb (3000) |
| Connections | 8 ft C19-to-L6-20P input cord; (1) C19 + (8) C13 output receptacles |
| Environment | 32–104°F (0–40°C); audible noise <50 dBA; altitude up to 11,500 ft |
| Communications | RS-232, USB, EPO; intelligent slot for Web/SNMP, Relay/dry-contact, Modbus cards |
| Compliance | CE, RoHS, TAA |
| Warranty | 3 years electronics, 3 years battery (USA and Canada); 1 year outside the USA and Canada; $50,000 load-protection policy |
| Options | Extended warranty; XBDM bypass distribution; XPDU power distribution |
| Lower-voltage option | T91 (120 V) |
T91i — frequently asked questions
How many battery packs can I add, and how much runtime does that give?
Up to seven T91-BP72A packs on both models. A T91i-2000 runs about 6 minutes on internal battery at full load, 28 with one pack and 197 with seven; at half load it reaches 465 minutes, close to eight hours. The T91i-3000 runs 2 minutes internally at full load and 124 with seven packs. Runtime scales with the load as much as the pack count, so size on actual watts.
What does unity power factor mean for sizing?
It changes the usable watts. Both T91i models are rated at unity, so a 3000 VA system delivers 3000 W. A competing 3000 VA UPS at 0.9 power factor delivers 2700 W to the same load. Size on watts rather than VA, or two systems look equivalent on paper when they are not.
How long does recharge take after a long outage?
About three hours to 95% on the internal battery at the default 2 A. The charger is selectable from 2 to 8 A at the LCD, which matters once external packs are fitted: seven packs at the default rate would take far longer than the site can usually afford. Set the charge current to suit the bank size.
Which output voltage should I select?
The T91i output is selectable at 200, 220, 230 or 240 V from the front panel, with 208 V nominal. Capacities are quoted at the highest selectable voltage and some models derate below it, so confirm the rating at your chosen output. Input accepts 110–300 VAC, load-dependent, on an 8 ft C19-to-L6-20P cord.
T91i or T91?
Voltage only. They are the same long-runtime tower architecture, the same T91-BP72A battery packs and the same programmable charger. The T91i is 208–240 V with C19 and C13 receptacles for global sites; the T91 is 120 V with NEMA receptacles for North America. Choose by the supply at the site.
Is the T91i TAA compliant, and what warranty applies?
Yes, and it carries CE and RoHS. Note it is not UL listed, which is normal for the 208–240 V range. Warranty is 3 years electronics and 3 years battery in the USA and Canada, 1 year outside the USA and Canada, and the $50,000 load-protection policy applies.
Documents and related links
Plan your T91i deployment
Talk to an Xtreme Power specialist about runtime sizing, battery-pack count for your target hours, charger programming, generator compatibility, and output-voltage selection for global 208–240 V sites.