Modern server rooms house critical IT infrastructure, including servers, networking equipment, and supporting power and cooling systems. Depending on operational scale, a server room may contain anywhere from a few racks to hundreds of servers, all securely organized within rack enclosures for efficiency, safety, and ease of maintenance. These servers typically operate without local displays or input devices and are monitored and managed remotely from centralized control locations.
As computing demands continue to grow, server room power requirements become increasingly complex and critical. To maintain uninterrupted operation and protect sensitive equipment from power disturbances, a reliable uninterruptible power supply (UPS) system is essential. For medium to large server room applications, a double conversion true online UPS in the 10–300 kVA range is the preferred solution, delivering continuous, clean power, zero transfer time, and maximum protection for mission-critical IT environments.
Feature
In a true online double-conversion UPS, the inverter operates continuously to deliver clean, stable, and reliable power at all times. This design ensures complete isolation of the connected load from utility power disturbances, making it ideal for applications where uninterrupted uptime is critical.
By converting incoming AC power to DC through a rectifier and then back to AC via the inverter, the UPS provides precise voltage regulation, stable output frequency, and effective protection against surges, sags, harmonics, and electrical noise. In the event of a mains power failure, the system seamlessly draws energy from the battery without any transfer delay, ensuring uninterrupted power delivery to critical equipment.
| Model | LFL300 |
|---|---|
| Power | 10–300 kVA |
| Input Voltage Range | 380 VAC ±25% (customizable) |
| Output Voltage | 380 VAC ±1% (customizable) |
| Phase Configuration | Three-phase input / Three-phase output |
| Output Waveform | Pure sine wave |
| Working Frequency | 50 / 60 Hz |
| Transfer Time | 0 ms |
| Battery Type | Sealed lead-acid battery |
| Battery Voltage | 384 VDC (adjustable) |
| Backup Time | Customizable |
| Protections | Electronic short-circuit protection, current limiting at 1.3× rated current |
| Overload Capability | 110% for 10 min; 125% for 3 min; 150% for 1 min |
| LED Indicators | Input, inverter, bypass, battery status |
| LCD Display | Input/output voltage, frequency, battery voltage, load percentage, temperature |
| Waveform Distortion | ≤3% (linear load), ≤5% (nonlinear load) |
| Working Temperature | 0°C to +45°C |
| Storage Temperature | -25°C to +55°C |
| Relative Humidity | 0–95% (non-condensing) |
| Altitude | ≤ 1000 m |
| Noise Level | < 50 dB |
| Communication Interfaces | RS485, RS232, USB, dry contact, intelligent expansion card slot |
| Standards | IEC 62040-1 |
| IP Rating | IP20 |





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