AoKu AKH Series High Frequency Transformerless Online UPS (1KVA - 10KVA | 1K / 2K / 3K / 6K / 10K)
AoKu AKH Series High Frequency Transformerless Online UPS (1KVA - 10KVA | 1K / 2K / 3K / 6K / 10K)
The AoKu AKH Series (1KVA - 10KVA) is a high-frequency transformerless online double-conversion UPS system designed for commercial IT, server rooms, and industrial power protection. Features 0ms transfer time, PF=1.0 unity power factor, 110V–300V wide AC input, <1% THD pure sine wave output, up to 95.5% efficiency, 1–12A adjustable battery charger (-L long-backup models), LCD display, EPO, and RS232/USB/SNMP smart monitoring.
KEY FEATURES & BENEFITS
High-Frequency Transformerless Double-Conversion Topology with 0ms Transfer
Engineered with advanced DSP digital control and transformerless double-conversion online architecture, delivering continuous, clean, pure sine wave power to mission-critical loads. Eliminates internal heavy copper transformers to maximize energy efficiency up to 95.5% while providing zero transfer time (0ms) from grid to battery mode during blackouts.
Unity Output Power Factor (PF = 1.0) for Maximum Active Load Capacity
Features a full unity output power factor (PF = 1.0), meaning 100% of kVA capacity is delivered as real active power in Watts (e.g., 3KVA = 3000W, 10KVA = 10000W). Allows IT administrators and engineers to connect up to 25% more active server loads compared to legacy PF=0.8 UPS units.
Ultra-Wide AC Input Range (110V–300V) & Active PFC (≥0.99)
Operates reliably across extreme utility grid fluctuations (110VAC to 300VAC) without discharging the battery bank, significantly extending battery service life in harsh grid environments. Active Power Factor Correction (APFC) maintains an input power factor of ≥0.99, preventing grid harmonic pollution.
Flexible Dual Models: Standard (-AKH) & Long-Backup (-AKHL) with 1–12A Charger
Available in two distinct hardware configurations: Standard models with internal VRLA AGM batteries for quick-runtime backup, and Long-Backup models (-AKHL) equipped with a powerful 1A–12A user-adjustable charger to rapidly recharge high-capacity external battery banks for multi-hour extended runtimes.
Intuitive LCD Display, EPO Port & Multi-Protocol Smart Communications
Features a front-panel blue backlit LCD display providing real-time telemetry for input/output voltage, frequency, battery capacity, and load percentages. Integrated USB, RS232, and Emergency Power Off (EPO) ports are supplemented by an intelligent expansion slot supporting SNMP network cards and dry contact relay interfaces.
Eco Mode Efficiency (Up to 95.5%) & Compact Standalone Tower Ergonomics
Advanced power electronics deliver up to 95.5% efficiency in normal AC double-conversion mode, minimizing operational thermal dissipation and lowering electricity bills. High power density tower housing saves valuable floor space in commercial offices and control centers.
PRODUCT SPECIFICATIONS
| Technical Parameter | AKH-1K / AKH-1KL | AKH-2K / AKH-2KL | AKH-3K / AKH-3KL | AKH-6K / AKH-6KL | AKH-10K / AKH-10KL |
|---|---|---|---|---|---|
| ⚡ System Capacity & Power Ratings | |||||
| Rated Power Capacity | 1 KVA / 1000W | 2 KVA / 2000W | 3 KVA / 3000W | 6 KVA / 6000W | 10 KVA / 10000W |
| UPS Architecture Topology | High-Frequency Transformerless Double-Conversion Online (DSP Digital Control) | ||||
| 🔌 AC Input Parameters | |||||
| Input Phase & Wiring | Single Phase + Neutral + PE (L + N + PE) | ||||
| Rated AC Input Voltage | 208VAC / 220VAC / 230VAC / 240VAC | ||||
| AC Input Voltage Range | 110VAC ~ 300VAC (110V~176VAC, 280V~300VAC power limited) | ||||
| AC Input Frequency Range | 50Hz / 60Hz ±6Hz, ±10Hz (Selectable) | ||||
| Input Power Factor (APFC) | ≥ 0.99 (Full Load Active Power Factor Correction) | ||||
| Input Harmonic Distortion (THDi) | ≦3% THD (Linear Load), ≦5% THD (Non-Linear) | ≦5% THD (Linear Load), ≦8% THD (Non-Linear) | |||
| ⚙️ Inverter AC Output Parameters | |||||
| Output Phase & Wiring | Single Phase + Neutral + PE (L + N + PE) | ||||
| Nominal AC Output Voltage | 208VAC / 220VAC / 230VAC / 240VAC ±1% | ||||
| Output Power Factor (PF) | 1.0 (Unity Output Power Factor) | ||||
| Output Waveform & THDv | Pure Sine Wave, ≦1% THD (Linear), ≦3% (Non-Linear) | Pure Sine Wave, ≦2% THD (Linear), ≦5% (Non-Linear) | |||
| Transfer Time (Switching) | AC Mode to Battery Mode: 0ms | Inverter to Bypass: 4ms | ||||
| Overload Capacity (AC Mode) | 30min@102%-110%, 10min@110%-130%, 30s@130%-150%, 200ms@>150% | 30min@102%-110%, 10min@110%-130%, 30s@130%-150%, 500ms@>150% | |||
| Overload Capacity (Battery Mode) | 10min@102%-110%, 1min@110%-130%, 10s@130%-150%, 500ms@>150% | 10min@102%-110%, 1min@110%-130%, 10s@130%-150%, 200ms@>150% | |||
| Full Load Machine Efficiency | 94.5% @ 220VAC | 95.5% @ 220VAC | 95.5% @ 220VAC | 95.0% (Max 95.5%) | 95.0% (Max 95.5%) |
| 🔋 Battery & Charger Specifications | |||||
| Standard Battery Bus Voltage | 24Vdc / 36Vdc | 48Vdc / 72Vdc | 72Vdc / 96Vdc | 192Vdc - 240Vdc | 192Vdc - 240Vdc |
| Standard Internal Battery Config (-AKH) | 12V 7Ah x 2 / x 3 | 12V 7Ah x 4 / x 6 | 12V 7Ah x 6 / x 8 | 12V 7Ah x 16 / x 20 | 12V 7Ah x 16 / x 20 |
| Standard Charger Current (-AKH) | 1.0A Default (1A - 2A Adjustable) | 1.0A Default (1A - 12A Adjustable) | |||
| Long-Backup Charger Current (-AKHL) | 5.0A Default (1A - 12A User Adjustable Fast Charger) | ||||
| 📐 Physical Dimensions, Weight & Environment | |||||
| Case Dimensions (L * W * H) (mm) | 392 * 145 * 225 | 392*145*225 / 395*190*325 | 395 * 190 * 225 / 325 | 460 * 190 * 615 | 460 * 190 * 615 |
| Net Weight (Standard / Long-Backup) | 18.8 kg / 10.9 kg | 30.6 kg / 15.4 kg | 26.5 kg / 16.5 kg | 63.8 kg / 10.1 kg | 65.0 kg / 12.05 kg |
| Operating Temperature & Humidity | 0℃ ~ 40℃ | 20% ~ 95% RH (Non-Condensing) | ||||
| Acoustic Noise Level & Altitude | ＜ 50dB (1m) | Altitude ＜1000m (IEC62040) | ||||
| Control & Communication Interfaces | USB Port, RS232 Port, EPO Terminal, Intelligent Expansion Slot (SNMP / Dry Contact Optional) | ||||
Technical Documentation
Access complete industrial specification layouts, installation blueprints, communication protocol guides, and international compliance certifications.
Technical Catalog
Get the AoKu AKH catalog for full electrical specifications, cabinet dimensions, battery configurations, wiring guides, and certifications.
User Manual
Get the AoKu AKH user manual for step-by-step installation, wiring diagrams, LCD settings, warning/fault code solutions, and battery maintenance.
PRODUCT APPLICATIONS
Engineered for high-density power reliability and critical equipment protection, the AoKu AKH Series High Frequency Transformerless Online UPS delivers 0ms zero-interruption double-conversion power across six key commercial and industrial application domains:
🖥️ Commercial Server Rooms & IT Edge Data Centers
Provides zero-transfer (0ms) double-conversion power isolation and PF=1.0 output capacity to safeguard high-density IT server racks, network switches, SAN storage, and VoIP enterprise infrastructure against blackout data loss.
📡 Telecom Central Offices & 5G Base Stations
Delivers reliable AC power backup and ultra-wide 110V–300V voltage regulation for telecommunication exchange centers, fiber optic nodes, transmission equipment, and remote cellular towers.
🏬 Industrial Automation & PLC Control Cabinets
Protects automated manufacturing lines, SCADA supervisory controls, robotics, and industrial PLCs from voltage sags, spikes, and frequency fluctuations produced by heavy industrial machinery.
🏥 Medical Imaging & Precise Laboratory Instruments
Supplies ultra-clean <1% THD pure sine wave AC power to sensitive hospital diagnostic equipment, clinical analyzers, bio-pharma storage, and scientific laboratory instruments requiring distortion-free voltage.
🏦 Financial Banking Terminals & Commercial Security Systems
Ensures uninterrupted operation for bank branch transaction servers, ATMs, centralized CCTV surveillance recording hubs, and access control networks during grid failure.
⚡ Enterprise Microgrids & Emergency Generator Backbones
Filters unstable frequency and voltage outputs from standby diesel or gas generators, providing a seamless bridge between grid failure and generator warm-up in commercial buildings.
PRODUCT SOLUTIONS
Technical solution architectures engineered by AoKu Energy to overcome efficiency losses, space constraints, and grid distortion in global enterprise electrical infrastructure:
⚡ High-Frequency Transformerless Efficiency & Weight Reduction Solution
Industry Challenge: Traditional transformer-based UPS units suffer from heavy copper losses, lower full-load efficiency (~88%), and bulky physical footprints that waste commercial space.
AoKu Solution: By adopting high-frequency IGBT switching and transformerless topology, the AKH Series achieves up to 95.5% machine efficiency while reducing cabinet weight by up to 50% for effortless installation.
📈 Unity PF=1.0 Active Power Density Optimization Solution
Industry Challenge: Modern blade servers and power supplies feature unity power factor, causing legacy PF=0.8 UPS units to hit Watt power limits prematurely and derate capacity.
AoKu Solution: Full PF=1.0 design matches kVA to kW (10KVA = 10kW), enabling IT managers to utilize 100% of rated capacity and eliminate wasted headroom.
🛡️ Ultra-Wide Voltage Suppression & Battery Lifespan Extension
Industry Challenge: Frequent voltage sags in unstable grid areas force standard UPS systems into frequent battery discharges, prematurely aging battery cells.
AoKu Solution: The 110V–300V wide input window keeps the inverter operating on utility grid power down to 110VAC, extending battery service life by up to 300%.
🔋 Flexible Long-Backup Customization with 1–12A Fast Charger
Industry Challenge: Commercial sites in remote areas require hours of backup time during extended utility blackouts, which standard weak UPS chargers (1A) cannot replenish quickly.
AoKu Solution: Long-Backup -AKHL models feature a powerful 1A–12A user-adjustable charger, recharging large external VRLA or LiFePO4 battery banks to 90% capacity in record time.
📱 Zero-Latency 0ms Power Isolation & Clean Sine Wave Supply
Industry Challenge: Sensitive diagnostic instruments and micro-servers glitch or reboot during micro-second voltage dropouts caused by utility switching.
AoKu Solution: True double-conversion online architecture continuously regenerates clean, regulated AC output with 0ms transfer time, guaranteeing zero disturbance to critical electronics.
⚙️ Centralized SNMP Network Monitoring & EPO Safety Integration
Industry Challenge: Unattended server rooms and remote offices lack real-time visibility into power quality and battery health, risking unexpected site outages.
AoKu Solution: Integrated USB, RS232, and EPO safety cut-off are paired with an SNMP slot for remote web-browser management, automated email alerts, and graceful OS shutdown.
Frequently Asked Questions
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