Dell Online Rack UPS 3750W 4U 5000va 208V Battery Backup Uninterruptible Power Supply K804N 0K804N CN-0K804N. The Dell Online Rack uninterruptible power system (UPS) protects your sensitive electronic equipment from basic power problems such as power failures, power sags, power surges, brownouts, and line noise.

Dell Part Number: K804N 0K804N CN-0K804N







Benefits:

- Online UPS design with pure sine wave output. The UPS filters and regulates incoming AC power and provides consistent power to your equipment without draining the battery.
- True online double-conversion technology with high power density, utility frequency independence, and generator compatibility.
- Selectable High Efficiency mode of operation.
- 4U size that fits any standard 48 cm (19”) rack.
- Start‐on‐battery capability for powering up the UPS even if utility power is not available.
- Maintenance is simplified by allowing the safe replacement of batteries without powering down the UPS.
- Emergency shutdown control through the Remote Emergency Power-off (REPO) ports.
- Two standard communication ports (USB and DB-9 serial port).
- Optional Dell Network Management Card with enhanced communication capabilities for increased power protection and control.
- Advanced power management with the Dell UPS Management Software for graceful shutdowns and power monitoring.
- Sequential shutdown and load management through separate receptacle groups called load segments.
- Firmware that is easily upgradable without a service call.
- Backed by worldwide agency approvals.

Specifications:

Electrical Input:
- Nominal Voltage: 200–220V
- Voltage Range: 155–255V auto-sensing
- Nominal Frequency: 50/60 Hz auto-sensing, ±3 Hz
- Efficiency (Normal mode): >95%
- Noise Filtering: Full-time EMI/RFI filtering
Electrical Output:
- Power Levels (rated at nominal inputs): 3750W
- Regulation (Normal mode): -6% to +6% of nominal voltage
- Voltage Waveform: Sine wave
- Output Receptacles: (2) L6-20R 20A, (1) L6-30R 30A, (2) IEC 320-C19 20A
Battery:
- Configuration: UPS: (16) 12V, 7.2 Ah internal batteries
- Voltage: 192 Vdc internal
- Fuses: (2) 30A fuses
- Type: Sealed, maintenance-free, valve-regulated, lead-acid
- Charging: Approximately 4 hours to 90% usable capacity at nominal line and no supplementary power supply load
- Monitoring: Advanced monitoring for earlier failure detection and warning
- Battery Runtimes: 5 minutes at full load/21 minutes at half load