GUTOR OP2446

Core Technical & Performance Parameters

• Rated Output Power: 4.6kVA / 3.7kW active power, power factor 0.8 lagging
• Topology: True online double-conversion AC-DC-AC topology, zero transfer switching time (0ms)
• Input Mains Voltage: Single-phase 180–264VAC wide input range, 50/60Hz auto-sensing
• Output Rated Voltage: 230VAC pure sine wave regulated ±1% steady state
• Output Frequency Synchronization: 50Hz / 60Hz ±0.5Hz tracking mains frequency
• Overload Capacity: 110% continuous operation; 150% load sustain 10 minutes; >160% short circuit protection 200ms cut-off
• Battery Configuration: Internal sealed lead acid battery pack, DC 240V nominal bus voltage; external battery cabinet expandable for extended backup runtime
• Efficiency: 93% full load linear efficiency, eco-mode up to 97% light load efficiency
• Communication Interfaces: RS232 serial port, dry contact alarm relay, optional SNMP network monitoring card
• Operating Temperature: 0°C ~ +40°C continuous; derate output power 1% per °C above 40°C
• Noise Level: ≤58dB at full load 1 meter distance
• Dimension & Weight: Rack-mount 19-inch 6U cabinet unit, 483mm × 266mm × 600mm, weight 42kg (integrated battery version)

Function & Feature Highlights

1. Double-conversion online topology ensures load equipment receives pure sine wave power regardless of mains grid distortion, eliminating control system signal interference
2. Zero millisecond transfer time during mains power failure; no PLC/SBC reset or servo drive fault triggered by power interruption
3. Ultra-wide input voltage range adapts to unstable industrial factory grid with frequent voltage fluctuation
4. Advanced battery management system (BMS) monitors cell voltage, internal resistance and temperature; prevents overcharge, deep discharge and thermal runaway
5. Remote emergency power off (REPO) hardwired safety input for facility emergency shutdown systems
6. Parallel redundant capability up to 6 identical OP2446 units for N+1 redundant power supply architecture
7. Full fault monitoring: mains loss, battery low, overload, over-temperature, output short circuit with dry contact alarm signal output
8. Eco-mode operation reduces power conversion loss during stable mains conditions to lower long-term energy consumption

Material & Structural Characteristics

• Outer Cabinet: Heavy gauge cold rolled steel sheet with anti-corrosion epoxy powder coating, 19-inch standard rack mounting frame
• Power Circuit Heat Sink: Extruded aluminum fin heat sinks for IGBT rectifier/inverter power modules
• Internal Battery Compartment: Separated sealed fire-resistant plastic battery chamber with thermal insulation barrier
• Cooling System: Variable speed temperature-controlled axial cooling fans, fan speed adjusted based on internal heat sink temperature
• Terminal Connections: Copper busbar power terminals with nickel plating for low resistance high-current transmission
• PCB Circuit Boards: Conformal coated industrial FR4 circuit boards resistant to dust and mild chemical vapor
• Safety Compliance: IEC 62040 UPS safety standard, IEC 61000 EMC industrial immunity certification

Working Principle (Double-Conversion Online Topology)

1. Normal Mains Operation Stage: AC mains input passes EMI filter then rectified to stable DC voltage via controlled rectifier circuit; rectified DC simultaneously charges internal battery pack and feeds inverter stage
2. Inverter stage converts regulated DC bus voltage back to high-quality pure sine wave 230VAC output to power critical industrial loads
3. Mains Failure Stage: If input AC voltage drops outside acceptable range or full blackout occurs, DC bus power instantaneously switches to battery pack discharge without any power gap to load equipment
4. Mains Restore Stage: When grid power recovers within acceptable voltage window, rectifier resumes operation to supply inverter and recharge battery pack automatically
5. Static bypass circuit activates only during UPS internal maintenance or permanent critical fault; transfers load directly to mains power with controlled transient voltage suppression
6. BMS battery management circuit continuously samples individual battery cell voltage and temperature; limits charging current to prevent battery overheating and premature aging

Installation Requirements

1. Mount into standard 19-inch industrial server rack cabinet with reinforced load-bearing rails capable of supporting minimum 50kg per unit
2. Maintain minimum 150mm rear clearance for cooling fan exhaust airflow; front panel intake air unobstructed
3. Mains input wiring must be protected by dedicated 32A MCB circuit breaker with earth fault leakage protection
4. Separate UPS output power distribution circuit from welding, motor and high-inductive machinery power circuits to avoid grid cross-interference
5. External battery cabinet installation requires dedicated ventilation space; battery operating temperature must be controlled between 15°C–25°C for maximum service life
6. Cabinet ambient temperature must not exceed +40°C continuous operation; install cabinet air conditioning if multiple UPS units racked together

Application Scenarios

• Aerospace ground test VME computing rack uninterrupted power supply
• Wind turbine control cabinet critical PLC and communication equipment backup power
• Semiconductor manufacturing cleanroom automation control systems
• Railway station signal interlocking and passenger monitoring equipment
• Medical CT/MRI imaging equipment stable power supply
• Water treatment plant SCADA central control room power backup

Operation & Maintenance Notes

1. Sealed lead acid internal batteries have rated service life 5–8 years at 20°C ambient; service life reduces 50% at continuous 35°C operation
2. Do not disconnect battery pack while UPS unit energized; loss of DC bus triggers instantaneous load power drop
3. Perform annual battery capacity test discharge cycle to identify degraded cells before full backup runtime loss occurs
4. Clean cooling fan intake filters every 6 months in dusty industrial environments; clogged filters cause over-temperature shutdown
5. Parallel redundant UPS systems require matching identical battery capacity and firmware version to avoid load current imbalance
6. Avoid connecting heavy inductive loads (large AC motors) directly to UPS output; inductive inrush current triggers overload protection shutdown