TX91 Isolated Online Tower UPS



Isolated online UPS provides protection from all 10 common power problems.

Isolated online UPS provides the cleanest power in the most demanding conditions. The TX91 galvanic isolation transformer prevents common mode noise which is left exposed by typical transformerless online designs.

Isolated online applications include retail, industrial environments, laboratories, and any installation with grounding or noise issues.

TX91 provides dual output voltages and optional configurable PDU to meet a wide range of receptacle requirements.

Product Snapshot

  • Available models: 3.8kVA/3.8kW, 5kVA/5kW, 6kVA/6kW, 10kVA/10kW
  • Optional extended batteries
  • Auto restart
  • UL1778, cUL, FCC Class A, RoHS
  • 3 years electronics, 3 years battery warranty (USA and Canada)






INPUTCapacity 3.8kVA (3.8kW)5kVA (5kW) 6kVA (6kW) 10kVA (10kW)
Voltage (Nominal)208VAC (200VAC, 220VAC, 230VAC, 240VAC optional)
Voltage range110-300VAC
Frequency46–64Hz auto-sensing
OUTPUTVoltage240/120VAC or 230/115VAC
Voltage regulation± 1%
Frequency50/60Hz ± 0.1Hz
Overload capacity110% 10 min; 130% 1 min; >130% 1 sec
EfficiencyUp to 97% ECO mode, 91% online mode
BATTERY/CHARGER Battery typeSealed, maintenance-free lead acid
Battery quantity and size (standard / XR models)(20) 12V 9AH / (20) 12V 580W
Charger voltage/current273VDC / 1A-4A (selectable)
PHYSICAL Input/outputTerminal blocks or optional PDU
UPS dimensions (W x D x H)9.9 x 23.3 x 32.4 in
UPS weight272 lbs275 lbs278 lbs307 lbs
OPTIONAL BATTERY PACKS Battery quantity and sizeBP960-1(20) 12V 9AH; BP960-2(40) 12V 9AH; BP960-3(60) 12V 9AH
Dimensions (W x D x H)9.9 x 23.3 x 32.4 in
WeightBP960-1 – 190lbs; BP960-2 – 320 lbs; BP960-3 – 450 lbs
Battery typeN/ABP – 2 x (3) 12V7.2AH; BP1 – 4 x (3) 12V7.2AH; BP2 – 2 x (6) 12V7.2AH
OPTIONAL PDU Input connectionTerminal blocks or 6 ft, L6–30P* Terminal blocks
120V receptacle options5–15/20R
240V receptacle optionsL6–30R, L6–20R, 6–15/20R, C19
ENVIRONMENTTemperature32–104°F (0–40°C)
Audible noise< 50 dBA
Altitude11,500 ft above sea level
WARRANTY3 years electronics, 3 years battery warranty (USA and Canada)
COMMUNICATIONS INTERFACERS-232, EPO, intelligent slot for optional cards (Web/SNMP, Relay/dry contact, Modbus)
INCLUDED IN BOXUser manual, RS-232 communication cable, ViewPower Software CD
AVAILABLE OPTIONS5 year extended warranty, output PDU, input L6–30P cord (for 3.8kVA, 5kVA & 6kVA)
*6kVA system capacity will be reduced by 30A input circut
TX91 3.8-10K Product Flyer
TX91 3.8-10K User Manual
© Copyright 2020 United Power System, Inc.

Site by DAY Vision