The VECHO VEC-LT800VA-1291 is a compa line-interactive uninterruptible power supply designed for personal computer installations and limited working environments. It provides a rated capacity of 800 VA / 480 W with simulated sinewave output during battery operation. Its integrated boost-and-buck automatic voltage regulation helps stabilize a wide 140–300 VAC input range. The UPS also supports cold start, automatic restart when AC power recovers, off-mode charging and intelligent battery recharging. Key Features 800 VA / 480 W Capacity: Provides backup power and protection within the stated VA and watt limits. Line-Interactive Operation: Uses simulated sinewave output while operating from the battery. Automatic Voltage Regulation: Two boost stages and one buck stage help stabilize incoming AC voltage. Wide Input Range: Supports an operating voltage range of 140–300 VAC at 50/60 Hz with automatic sensing. Cold Start and Auto Restart: Can start without an AC supply and automatically restart when mains power returns. Integrated Protection: Includes short-circuit, overload, overcharge and over-discharge protection. Technical Specifications Component Specification VECHO Model VEC-LT800VA-1291 Produ Type Line-Interactive UPS Capacity 800 VA / 480 W Nominal Input Voltage 230 VAC Operating Voltage Range 140–300 VAC Operating Frequency 50/60 Hz, auto sensing Battery-Mode Voltage Regulation ±10% Battery-Mode Frequency 50/60 Hz ±1 Hz Transfer Time Typical 4–8 ms; 13 ms maximum Battery-Mode Waveform Simulated sinewave Battery Voltage 12 VDC Battery Configuration 9 Ah × 1 Recharge Time 4–6 hours to recover 90% capacity Voltage Regulation Two boost stages and one buck stage AVR Operating Functions Cold start, auto restart, off-mode charging and generator compatibility Protection Short circuit, overload, overcharge and over-discharge protection Alarm Conditions Battery mode, low battery, overload, battery replacement and fault Humidity 0–90% RH at 0–40°C, non-condensing Noise Level Less than 45 dB Dimensions 298 × 101 × 142 mm Weight 4.9 kg Compatibility & Important Information Connected equipment should remain within both the 800 VA apparent-power rating and the 480 W active-power rating. During battery operation, the UPS provides a simulated sinewave output. The produ family is offered with LED or LCD display selections, different output socket configurations and optional USB or RS232 communication with RJ11/RJ45 protection. The produ photographs and listed connections should match the exa version stocked by . Please to review Q: What is the power capacity of the VECHO VEC-LT800VA-1291? A: It has a rated capacity of 800 VA / 480 W. Q: What type of UPS is this model? A: It is a line-interactive UPS with boost-and-buck automatic voltage regulation. Q: What input voltage range does it support? A: Its specified operating input voltage range is 140–300 VAC, with a nominal input voltage of 230 VAC. Q: What waveform does it provide during battery operation? A: The UPS provides a simulated sinewave output while operating from its battery. Q: What battery is used in the 800 VA model? A: The VEC-LT800VA-1291 uses one 12 V, 9 Ah battery. Q: How long does the battery take to recharge? A: The typical recharge time is 4–6 hours to recover 90% battery capacity. Q: Can the UPS start without mains power? A: Yes. It supports a cold-start function that allows it to start without an AC power supply. Q: Are USB communication and network protection included on every version? A: USB or RS232 communication and RJ11/RJ45 protection are optional features within this UPS family and depend on the selected version.
