Description
EX3C3 20kVA Three-Phase Online UPS
The DAXIN ENERGY EX3C3 20kVA online UPS is designed for critical equipment that requires stable, clean and uninterrupted three-phase power. Its online double-conversion topology protects connected loads from voltage fluctuation, frequency variation, harmonic interference, electrical noise and unexpected power interruptions.
Key Features
Reliable Online Double-Conversion Design
- True online double-conversion topology provides clean sine wave output for sensitive equipment.
- Output frequency tracking, phase locking, voltage regulation and noise filtering help reduce the impact of unstable utility power.
- Advanced modular dual-CPU control improves UPS reliability, operating stability and overall system performance.
- Wide AC input voltage range reduces unnecessary battery discharge in areas with poor grid conditions.
- DC start function allows the UPS to start directly from battery when utility power is unavailable.
High Input Power Factor and Low Harmonic Interference
- Advanced PFC technology keeps the input power factor close to 1 under different load and utility voltage conditions.
- Input harmonic filter design reduces feedback pollution to the utility grid.
- Input and output harmonic filters help minimize UPS interference with the power system.
- High-frequency filtering and synchronization technology improves generator compatibility.
Complete Protection Functions
- Output overload protection.
- Output short-circuit protection.
- Inverter over-temperature protection.
- Battery low-voltage warning protection.
- Battery overcharge protection.
- Manual maintenance bypass switch supports easier service while keeping load power supplied through bypass.
LCD Display and Communication Management
- LCD display shows UPS operating status, system parameters and alarm information in real time.
- RS232 / USB communication interfaces support local monitoring and computer communication.
- Optional SNMP network adapter enables remote UPS monitoring and centralized power management.
- Compatible UPS monitoring software provides clear visibility of system operating data.
Optional Intelligent Battery Monitoring
- Supports single battery detection and monitoring.
- Provides over-voltage, under-voltage and voltage difference alarm functions.
- Battery fault information can be displayed on the screen to help administrators respond quickly.
Strong Environmental Adaptability
The circuit boards are installed in a fully enclosed structure and treated with conformal coating, improving reliability in harsh environments such as tunnels, plazas, industrial sites and demanding equipment rooms.
Typical Applications
- Small data centers and server rooms
- Telecom equipment rooms
- Industrial automation systems
- Medical and laboratory equipment
- Security and monitoring systems
- Commercial buildings and office power backup
- Emergency backup power systems
Technical Specifications
| Model | EX3C3-20kVA |
|---|---|
| Capacity | 20kVA / 18kW |
| Topology | Online double-conversion UPS |
| Input Phase | Three-phase grounded |
| Input Voltage Range | 110VAC (Ph-N) +/-3% at 50% load; 176VAC (Ph-N) +/-3% at 100% load |
| Input Frequency | 45-55Hz at 50Hz; 56-65Hz at 60Hz |
| Input Power Factor | > 0.99 at 100% load |
| Output Voltage | 3 x 360 / 380 / 400 / 415VAC, three-phase |
| AC Voltage Regulation | +/-0.3% |
| Output Frequency | 46-54Hz or 56-64Hz in synchronized mode; 50Hz +/-0.1Hz or 60Hz +/-0.1Hz in battery mode |
| Crest Factor | 3:1 |
| Output THD | <=1% with linear load; <=2% with nonlinear load |
| Transfer Time | 0ms |
| Efficiency | > 91.5% in AC mode; > 88% in battery mode |
| Battery Quantity | 16-20 pcs adjustable, preset 16 pcs |
| Charging Current | 4.0A +/-10% |
| Dimensions | 592 x 250 x 576 mm |
| Net Weight | 40 kg |
| Operating Temperature | 0-40 deg C |
| Relative Humidity | < 95%, non-condensing |
| Noise | < 65dB at 1m |
| Communication | RS232 / USB, optional SNMP |
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