AoKu AKLS-B Series Automatic Bivolt Line Interactive Pure Sine Wave UPS (1KVA - 3KVA | 120V / 220V Auto Sensing | AKLS-B-1K / 1.5K / 2K / 3K)
AoKu AKLS-B Series Automatic Bivolt Line Interactive Pure Sine Wave UPS (1KVA - 3KVA | 120V / 220V Auto Sensing | AKLS-B-1K / 1.5K / 2K / 3K)
The AoKu AKLS-B Series (1KVA - 3KVA | 800W - 2400W | AKLS-B-1K / 1.5K / 2K / 3K) is an automatic Bivolt line-interactive pure sine wave UPS system engineered for dual-voltage utility grids (120V / 220V Auto Sensing) and critical loads requiring high-quality power backup. Features PF=0.8 power factor, CPU digital control, 2-stage AVR voltage regulation, pure sine wave output on battery mode, 2–6ms transfer time, auto-restart upon AC recovery, and switchable 1.5A/3A charging current modes. Built with internal 12V 7Ah/9Ah lead-acid battery packs, multi-telemetry LCD display, and comprehensive low-voltage, overload, and short-circuit safeguards for server workstations, medical equipment, and commercial IT infrastructure.
KEY FEATURES & BENEFITS
Automatic Bivolt Input Sensing (120V / 220Vac) & Pure Sine Wave Output
Features an intelligent dual-voltage automatic sensing AC input stage (120V: 92–140Vac / 220V: 183–245Vac), seamlessly adapting to fluctuating dual-voltage grids without manual configuration. Delivers continuous, ultra-clean pure sine wave output power in battery inverter mode, perfectly compatible with sensitive Active PFC power supplies, server racks, and precision medical devices.
Advanced CPU Digital Control & 2-Stage AVR Voltage Regulation
Powered by a high-speed CPU digital controller and 2-stage Boost & Buck Automatic Voltage Regulation (AVR). Automatically stabilizes utility grid over-voltages and under-voltages back to nominal output levels (120V/220V ±5% in battery mode) without depleting internal battery energy, significantly preserving battery service life.
Fast 2–6ms Transfer Time & Unity Power Factor Efficiency (PF = 0.8)
Delivers an ultra-fast transfer time of 2 to 6ms (10ms maximum) during grid outages, ensuring zero system reboot or cashier freeze for connected loads. Offers a true 0.8 power factor (e.g., 3000VA delivers 2400W real active power), maximizing usable wattage for high-density IT hardware.
Switchable 1.5A / 3A Smart Charger & Offline Automatic Charging
Equipped with a flexible smart battery charger allowing users to switch between small current mode (1.5A) and large current mode (3A) directly via the front panel control switch. Features automatic offline charging, continuously restoring internal 24VDC/48VDC lead-acid battery packs (12V 7Ah/9Ah) to 90% capacity within 6–8 hours even when the UPS is powered off.
Comprehensive Hardware Safeguards & Auto-Restart Functionality
Engineered with multi-layered circuit protections including input AC breaker, output overload (60s at 110%, 5s at 120%), output short-circuit, overcurrent protection (20ms auto-shutdown in inverter mode), and battery low-voltage cutoff. Automatically restarts connected equipment when utility grid AC power recovers.
Interactive Graphical LCD Display & Silence Buzzer Setup
Features a clear backlit LCD screen providing real-time telemetry on AC input voltage, output voltage, battery capacity, load level, operating mode (AC/Backup), auto-start status, and charging mode. Includes a silence setup function allowing users to mute audible warning buzzers while preserving visual alert indications.
PRODUCT SPECIFICATIONS
| Technical Parameter | AKLS-B-1K | AKLS-B-1.5K | AKLS-B-2K | AKLS-B-3K |
|---|---|---|---|---|
| ⚡ System Capacity & Power Ratings | ||||
| Apparent Capacity (VA) | 1000 VA (1KVA) | 1500 VA (1.5KVA) | 2000 VA (2KVA) | 3000 VA (3KVA) |
| Real Active Power (W) | 800 W | 1200 W | 1600 W | 2400 W |
| Power Factor & Topology | PF = 0.8 ; Line-Interactive Topology with Pure Sine Wave Output | |||
| Control Architecture | CPU Digital Micro-Controller Processor | |||
| 🔌 Dual-Voltage AC Input & Inverter Output Parameters | ||||
| Automatic Bivolt AC Input | 120V / 220 Vac Automatic Sensing & Selection | |||
| AC Input Voltage Window | 120Vac System: 92 – 140 Vac | 220Vac System: 183 – 245 Vac | |||
| AC Input Frequency Window | 45 Hz ～ 65 Hz (Auto Sensing 50Hz/60Hz) | |||
| Output Voltage (AC Line Mode) | 120Vac System: 100 – 132 Vac | 220Vac System: 200 – 240 Vac | |||
| Output Voltage (Inverter Mode) | 120Vac ± 5% or 220Vac ± 5% (Pure Sine Wave Output) | |||
| Output Frequency (Inverter) | 50 Hz ± 0.5 Hz / 60 Hz ± 0.5 Hz | |||
| Transfer Time | Typical 2 ～ 6 ms (10 ms Maximum) | |||
| Overload Protection Trip | Auto shutdown in 60s @ 110% load | Auto shutdown in 5s @ 120% load | |||
| Overcurrent System Trip | System shuts down automatically within 20 ms in Inverter mode | |||
| 🔋 Battery System Specifications & Smart Charging | ||||
| Battery Model Type | Sealed Maintenance-Free Lead-Acid Batteries | |||
| Nominal DC System Voltage | 24 VDC | 24 VDC | 48 VDC | 48 VDC |
| Battery Model & Quantity | 12V 7Ah × 2 pcs | 12V 9Ah × 2 pcs | 12V 7Ah × 4 pcs | 12V 9Ah × 4 pcs |
| Switchable Charger Current | 1.5A (Small Current) / 3.0A (Large Current) Switchable via Panel | |||
| Recharge Period | 6 ～ 8 hours recover to 90% capacity (Offline Charging Enabled) | |||
| Battery Low Voltage Cutoff | Adjustable Battery Protection Threshold Point | |||
| 📐 Safeguards, Controls & Physical Indicators | ||||
| Comprehensive Safeguards | AC Overcurrent Breaker, Output Overload, Short-Circuit, Overcurrent & Battery Low Voltage Cutoff | |||
| Automated System Recovery | Auto-Restart when AC Utility Recovers ; Automatic Offline Battery Charging | |||
| User Control & Telemetry | Graphical Backlit LCD Screen + Mute / Silence Setup Switch | |||
Technical Documentation
Access complete industrial specification layouts, installation blueprints, communication protocol guides, and international compliance certifications.
Technical Catalog
Get the AoKu AKLS-B Series catalog for full electrical specifications, cabinet dimensions, battery configurations, wiring guides, and certifications.
User Manual
Get the AoKu AKLS-B Series user manual for step-by-step installation, wiring diagrams, LCD settings, warning/fault code solutions, and battery maintenance.
PRODUCT APPLICATIONS
Engineered for dual-voltage commercial grids (120V/220V) and mission-critical equipment, the AoKu AKLS-B Series Bivolt Pure Sine Wave UPS delivers reliable, continuous power protection across six key sectors:
🌐 Dual-Voltage IT Data Rooms & Active PFC Servers
Supplies stable, pure sine wave power to corporate server racks and network storage in regions with mixed 120V/220V power distribution, preventing PFC power supply shutdowns.
🏥 Precision Medical Diagnostic Equipment & Labs
Protects sensitive medical analyzers, ultrasound machines, and laboratory testing devices against grid voltage fluctuations and blackout data loss.
🖥️ High-End Graphic Workstations & Financial Terminals
Delivers clean backup power to engineering CAD workstations, financial trading terminals, and video editing suites during power outages.
🛒 Retail POS Checkout Systems & Commercial Chains
Prevents transaction loss or cash register freezing at supermarket checkout counters during voltage sags, ensuring continuous retail operation.
📹 Security CCTV Control Centers & NVR Racks
Maintains non-stop recording for IP camera video recorders, door access control controllers, and facility security monitoring hubs.
🏭 Industrial PLC Automation & Communication Hubs
Guarantees uninterruptible operation for automated assembly line controllers, industrial gateways, and telecom base station equipment.
PRODUCT SOLUTIONS
Technical solution architectures engineered by AoKu Energy to overcome dual-voltage grid instability, Active PFC load shutdowns, and rapid battery cycling:
⚡ Dual-Voltage Grid Fluctuations & Bivolt Auto-Adaptation
Industry Challenge: Regions with mixed 120V and 220V power lines risk damaging standard single-voltage UPS units or causing frequent system trips.
AoKu Solution: The AKLS-B Series features auto-sensing Bivolt circuitry (120V: 92–140V / 220V: 183–245V), eliminating human configuration errors and ensuring seamless grid integration.
🖥️ Active PFC Power Incompatibility & Pure Sine Wave Output
Industry Challenge: Modern server power supplies with Active PFC turn off when supplied with modified square wave UPS power during blackouts.
AoKu Solution: Outputs a clean Pure Sine Wave on battery power, guaranteeing 100% compatibility with Active PFC server racks, workstation PCs, and medical equipment.
🔋 Deep Voltage Sags & 2-Stage AVR Battery Preservation
Industry Challenge: Frequent voltage brownouts force standard UPS units to discharge batteries continuously, leading to rapid battery degradation.
AoKu Solution: Integrated CPU-controlled 2-stage Boost & Buck AVR automatically corrects brownouts and surges back to normal range without drawing battery power.
⚡ Rapid Recharge Cycles & 1.5A / 3A Switchable Smart Charger
Industry Challenge: Slow battery charging leaves connected equipment vulnerable during back-to-back power outages in unstable grid areas.
AoKu Solution: Allows users to toggle to 3A large current charging on the LCD panel, accelerating battery recovery to 90% in 6–8 hours alongside offline charging support.
🔌 Unattended Blackout Recovery & Auto-Restart Functionality
Industry Challenge: Remote equipment sites experience extended downtime after blackouts when UPS units require manual power-on button presses.
AoKu Solution: Auto-Restart logic automatically reboots the UPS and restores continuous power output as soon as utility grid AC power returns.
🛡️ Multi-Tier Circuit Protection & Overcurrent System Trip
Industry Challenge: High inrush currents and output short-circuits can blow internal inverter transistors during power switching events.
AoKu Solution: Multi-layered hardware safeguards include 20ms overcurrent system trip, AC input breaker, and timed overload shutdown (60s @ 110%, 5s @ 120%).
Frequently Asked Questions
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Pre-Sales Support
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