Expert Features 2000VA Line-Interactive Capacity: Built for desktop computers, office equipment, networking devices, and other compatible electronics that need short-term backup power and automatic voltage support during unstable mains conditions. Automatic Voltage Regulation: Two boost stages and one buck stage help stabilize a wide input range without immediately switching to battery power, reducing unnecessary battery cycling during common voltage fluctuations. Wide Input Voltage Range: Supports 81–145VAC or 162–290VAC, allowing the UPS to continue regulating power across unusually low or high mains-voltage conditions. Fast Transfer Response: Typical 2–6ms transfer time, with a stated 10ms maximum, helps reduce interruption when switching from utility power to battery mode. Simulated Sinewave Output: Delivers a simulated sinewave while operating on battery, suitable for many conventional PC, office, and networking loads; compatibility should be checked for highly sensitive active-PFC or specialized equipment. Dual-Battery System: Uses two 12V 9Ah batteries in a 24VDC configuration, providing the energy reserve needed for supported equipment during outages. Off-Mode Charging: The battery can recharge while the UPS output is switched off, helping restore battery capacity without actively powering connected equipment. Intelligent Battery Recharging: The built-in charging system is designed to recover the battery to approximately 90% capacity within 6–8 hours under typical conditions. Cold-Start Function: Allows the UPS to start from battery power without an available AC supply, useful when equipment must be powered during a complete outage. Generator Compatibility: Designed to operate with compatible generator sources, making it more flexible for locations that rely on backup generation. Informative LCD Monitoring: The LCD version displays operating mode, load level, battery level, input voltage, output voltage, overload, fault, and low-battery conditions for quick status checking. Comprehensive Protection: Includes short-circuit, overload, overcharge, and battery over-discharge protection to help protect the UPS and attached compatible equipment. Audible Status Alerts: Distinct alarm intervals indicate battery operation, low battery, overload, battery-replacement warning, and system faults. Compact Tower Design: The 380 × 158 × 198mm housing and approximately 10.5kg net weight provide substantial backup hardware in a relatively compact floor or desk-side footprint. Expert Specs Specification Details Brand NCTS Product Name NCTS-QSTROM 2000VA Technical Model Listed QSTROM PRO 2000VA Product Type Line-Interactive UPS Capacity 2000VA Input Voltage 220VAC Supported Output Voltage 220/230/240VAC Input Voltage Range 81–145VAC / 162–290VAC Input Frequency Range 50/60Hz, Auto-Sensing AC Voltage Regulation, Battery Mode ±10% Output Frequency, Battery Mode 50/60Hz ±1Hz Transfer Time Typical 2–6ms; 10ms Maximum Battery-Mode Waveform Simulated Sinewave AVR Design Two Boost Stages and One Buck Stage Battery Voltage 24VDC Battery Type and Quantity 2 × 12V 9Ah Typical Recharge Time 6–8 Hours to Recover Approximately 90% Capacity Off-Mode Charging Supported Cold-Start Function Supported Generator Compatibility Supported LED Indicators AC Mode, Battery Mode, Overload, Fault LCD Information AC Mode, Battery Mode, Load Level, Battery Level, Input Voltage, Output Voltage, Overload, Fault, Battery Low Protection Short Circuit, Overload, Overcharge, Battery Over-Discharge Battery-Mode Alarm Sounds Every 10 Seconds Low-Battery Alarm Sounds Every Second Overload Alarm Sounds Every 0.5 Second Battery-Replacement Alarm Sounds Every 2 Seconds Fault Alarm Continuous Sound Operating Humidity 0–90% RH at 0–40°C, Non-Condensing Noise Level Less Than 55dB Dimensions 380 × 158 × 198mm, D × W × H Approximate Net Weight 10.5kg GTIN 6295151551646
