AoKu AKT-33 Series Low Frequency Transformer-Based Online UPS (10kVA - 300kVA | 3 Phase In 3 Phase Out)
AoKu AKT-33 Series Low Frequency Transformer-Based Online UPS (10kVA - 300kVA | 3 Phase In 3 Phase Out)
The AoKu AKT-33 Series (10kVA - 300kVA | 3 Phase In 3 Phase Out) is a heavy-duty low-frequency online double-conversion UPS system engineered with an integrated galvanic isolation transformer and high-speed DSP digital control. Features 0ms transfer time, superior inductive and surge load immunity, wide 3-phase AC input range, temperature-compensated smart battery charger, interactive LCD display, and RS232/RJ-45/SNMP remote telemetry for industrial plants, healthcare facilities, utilities, and data infrastructure.
KEY FEATURES & BENEFITS
Integrated Low-Frequency Galvanic Isolation Transformer
Built-in industrial-grade low-frequency output isolation transformer completely isolates utility grid noise, common-mode interference, and neutral potential drift from the output load. Provides maximum electrical safety, suppresses high voltage transients, and prevents short-circuit faults from damaging critical equipment.
True Double-Conversion Online Topology & DSP Control (0ms Transfer)
Engineered with high-speed Digital Signal Processor (DSP) technology and double-conversion online architecture, continuously delivering clean, regulated 3-phase pure sine wave power (380V/400V/415V). Switches instantly between mains utility and battery power with 0ms transfer time, guaranteeing zero disruption for connected loads.
Heavy-Duty Inductive & Surge Load Immunity
Specially designed for harsh industrial environments, easily absorbing massive motor starting inrush currents, phase unbalances, and high harmonic feedback from heavy machinery, pumps, industrial robotics, CNC centers, and medical CT/MRI diagnostic imaging suites.
Smart Temperature-Compensated Charger & Rapid Recharge
Advanced multi-stage battery charging logic shortens recharge duration for long-backup battery banks while providing dynamic thermal compensation. Automatically adjusts charging voltage based on ambient battery temperature to prevent overcharging and significantly extend battery service life.
Wide 3-Phase AC Input Adaptability & Generator Coupling
Operates across a wide 3-phase utility input voltage range, maintaining continuous online output without discharging batteries during severe grid sags or swells. Smoothly integrates with backup diesel power generators, absorbing frequency fluctuations during generator start-up transitions.
Simplified Circuit Architecture & Comprehensive Telemetry
Simplified component layout reduces failure points and enhances cabinet thermal performance. Equipped with an interactive LCD status panel, LED indicators, standard RS232 and RJ-45 interfaces, plus optional GPRS/SNMP modems for complete remote network management and automated alerts.
PRODUCT SPECIFICATIONS
| Technical Parameter | AKT-33 10K / 15K / 20K | AKT-33 30K / 40K / 60K / 80K | AKT-33 100K / 120K / 160K | AKT-33 200K / 250K / 300K |
|---|---|---|---|---|
| ⚡ System Capacity & Power Ratings | ||||
| Apparent Power (kVA) | 10kVA / 15kVA / 20kVA | 30kVA / 40kVA / 60kVA / 80kVA | 100kVA / 120kVA / 160kVA | 200kVA / 250kVA / 300kVA |
| Active Power (kW) | 8kW / 12kW / 16kW | 24kW / 32kW / 48kW / 64kW | 80kW / 96kW / 128kW | 160kW / 200kW / 240kW |
| System Topology & Output Isolation | Low-Frequency Double-Conversion Online with Integrated Galvanic Isolation Transformer | |||
| 🔌 3-Phase AC Input Parameters | ||||
| Nominal Input Voltage & Phase | 3 x 380VAC / 400VAC / 415VAC (3Ph + N + PE) | |||
| Input Voltage Tolerance Range | 380VAC ± 25% Wide Utility Grid Input Window | |||
| Input Frequency Range | 50Hz / 60Hz ± 5% (Auto-Sensing) | |||
| ⚙️ 3-Phase Inverter Output Parameters | ||||
| Nominal Output Voltage & Accuracy | 3 x 380VAC / 400VAC / 415VAC (3Ph + N + PE) ; Steady State ±1% | |||
| Output Waveform & Transfer Time | Pure Sine Wave ; 0ms Transfer Time (Online Double Conversion) | |||
| Total Harmonic Distortion (THD) | ≤ 2% THD (Linear Load) ; ≤ 5% THD (Non-linear Load) | |||
| Inverter Overload Capacity | 125% for 10 minutes ; 150% for 1 minute ; >150% Transfer to Bypass | |||
| 🔋 Battery System & Smart Charger | ||||
| Nominal DC Bus Voltage | ±192VDC or ±240VDC (12V x 32 Pcs / 40 Pcs) | ±240VDC / ±384VDC Standard Battery Configuration | ||
| Charger Feature & Temperature Comp. | Smart Multi-Stage Charging with Automatic Temperature Compensation & Rapid Recharge Logic | |||
| 📐 Physical Dimensions, Cabinet & Environment | ||||
| Cabinet Dimensions (D x W x H) | 592 x 250 x 826 mm | 815 x 300 x 1000 mm | 1000 x 430 x 1200 mm | 1000 x 600 x 1200 mm |
| Display & Human-Machine Interface | Interactive LCD Graphic Display + Status LED Indicators | |||
| Communication Ports & Options | RS232, RJ-45 Terminal, Dry Contacts, Optional GPRS / SNMP Remote Management Modem | |||
Technical Documentation
Access complete industrial specification layouts, installation blueprints, communication protocol guides, and international compliance certifications.
Technical Catalog
Get the AoKu AKT-33 catalog for full electrical specifications, cabinet dimensions, battery configurations, wiring guides, and certifications.
User Manual
Get the AoKu AKT-33 user manual for step-by-step installation, wiring diagrams, LCD settings, warning/fault code solutions, and battery maintenance.
PRODUCT APPLICATIONS
Engineered for heavy industrial power protection and critical infrastructure safety, the AoKu AKT-33 Series Low-Frequency Transformer-Based Online UPS delivers uncompromising reliability across six key commercial and industrial sectors:
⚡ Power Utilities, Power Plants & SCADA Control Substations
Delivers isolated 3-phase power to electrical power plant control rooms, SCADA telemetry nodes, high-voltage substations, and energy management systems against extreme grid surges.
🏭 Heavy Industrial Manufacturing, Robotics & CNC Machine Tools
Shields automated assembly lines, heavy motor drives, industrial pumps, semiconductor cleanrooms, and CNC machining centers from utility voltage sags, harmonics, and blackouts.
🏥 Hospital Diagnostic Suite Imaging (CT / MRI) & Critical Care
Provides clean, surge-immune power to sensitive CT diagnostic scanners, MRI suites, surgical operating theaters, and central medical data repositories in healthcare centers.
🚆 Railway Transit Systems, Highway Toll Stations & Airports
Guarantees continuous 24/7 power to automated highway toll gates, railway signaling control hardware, airport baggage telemetry, and transit monitoring control centers.
🖥️ Enterprise Data Centers, Engine Rooms & IT Infrastructure
Powers high-capacity 3-phase server engine rooms, enterprise storage arrays, and communications data hubs with zero-transfer double-conversion protection.
🔬 Scientific Research Laboratories & Precision Electronics
Delivers galvanically isolated pure sine wave power to university scientific laboratories, high-precision electron microscopes, and semiconductor test rooms.
PRODUCT SOLUTIONS
Technical solution architectures engineered by AoKu Energy to overcome harsh electrical noise, heavy motor inrush, and battery degradation in global industrial infrastructure:
🛡️ Galvanic Isolation & Ground Noise Elimination Solution
AoKu Solution: The integrated low-frequency isolation transformer acts as a physical barrier against common-mode noise and ground potential drift, preventing damaging voltage spikes from reaching sensitive medical or industrial instruments.
⚙️ Heavy Motor Inrush Surge & Impact Load Cushioning Solution
AoKu Solution: Low-frequency transformer inductive impedance absorbs high motor starting inrush currents (3x-7x rated load) from industrial water pumps and CNC spindles, eliminating inverter overload tripping.
🔋 Smart Temperature Compensation & Battery Extension Solution
AoKu Solution: The smart charger dynamically adjusts charging voltage according to ambient battery temperature sensor readings, preventing thermal runaway in hot plant environments and extending battery bank service life.
🔌 Wide AC Input Tolerance & Generator Coupling Solution
AoKu Solution: An ultra-wide 380VAC ± 25% input voltage tolerance window ensures double-conversion output remains online during grid voltage sags, while smoothing out frequency fluctuations during backup diesel generator operation.
📱 Multi-Protocol Network Telemetry & SCADA Integration Solution
AoKu Solution: Standard RS232/RJ-45 ports combined with optional GPRS/SNMP web modems enable real-time telemetry, automated email alert logging, and seamless integration with industrial SCADA or DCIM software.
🏗️ Simplified Industrial Circuit Design & Extreme Reliability Solution
AoKu Solution: Streamlined power circuit topology minimizes component count, enhances thermal cooling airflow, and boosts Mean Time Between Failures (MTBF) in harsh, dusty, or unconditioned industrial plant environments.
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