DC Power System -48V
SENTINEL
Incredible Functionality, and Scalability in a 1 RU, 600 Watt to 1.8 Kw DC Power System
- 19″, 1U, rack mount shelf with integrated power distribution and SNMP digital controller
- 90-250 VAC input, power factor corrected
- 3 power bays accept 600 watt modular rectifiers, -48V
- 33 amp, 1800 watt total max. system output capacity
- Output temperature compensated for precise battery charging
- 4 x DC circuit breaker distribution capacity, with tripped breaker alarm
- Master disconnect breaker for two battery banks, with tripped breaker alarm
- Controller with digital display of system parameters with TCP/IP interface and SNMP monitoring/logging
- Alarm contacts monitor major system functions
- Low voltage disconnect (LVD) built-in
- Easily configures to meet site power requirements
| System Power Configurations @ 48V, 90-300 VAC Input | |||
| Watts Per Rectifier | # of Rectifiers Installed | ||
| 1 | 2 | 3 | |
| 600Watt | 11Amp (600Watt) | 22Amp (1200Watt) | 33Amp (1800Watt) |
AC Input:
- Nominal: 115 or 230VAC
- Voltage Range: 90 – 300V
- Frequency Range: 45 – 100Hz
- Power Factor: >0.99
- Efficiency: >92% (from 50% output power)
DC Output:
- Voltage: -48 Volt
- Output Ratings: Constant Power Output from -54V to -58V
- Nominal Voltage: -48V
- Rated Voltage: -54V
Power:
- Rated maximum System Output Power: 1800Watt @ -54V
- Polarity: Positive Earth. -48 Volt
- Individual Rectifier Power: (-48V) 600Watt, Amperage 4.2 @ 115 or 230 VAC in
DC Distribution:
- Load: 4 x load circuit breaker position capacity, available amperages (specify) 6Amp, 10Amp, 20Amp or 30Amp, with tripped breaker alarm
- Battery: 2 x 30Amp battery circuit breakers
- Breaker Fail Detection: Electronic fail detection on both load and battery circuit breakers
- Low Voltage Battery Disconnect: 80Amp battery LVD installed as standard, with disconnect alarm
Monitoring & Control:
Monitors all power system conditions including DC Voltage, Rectifier Current, Battery Current, Battery Temperature, and Distribution Failure. Visual notification of Alarm Conditions by LED’s and a 4 line x 16 character alpha numeric display mounted on the front panel, with remote notification being enabled by relay contacts, RS232 or TCP/IP (using SNMP). It has built-in web based controls allowing setup of system parameters using a web browser and utilizes a USB communications port, which allows for local monitoring of system operations as well as easy downloading of configuration files for multiple site installations.
Protection:
- Current Limit: Adjustable to 50-100% of maximum rated current.
- Over Temperature: Automatic current reduction, backup shutdown protection.
- Polarity Reversal: Output fuse with crowbar diode.
- Over Voltage: Adjustable limit.
- Input Voltage: Auto shutdown, auto restart when correct voltage restored.
- Input Inrush: <2x maximum input current.
- Input Fuses: In phase and neutral.
Technical Characteristics:
- Noise: Ripple <100Hz: <1mV rms unweighted
- Voice band 100Hz-5KHz: <2mV rms psophometric
- Wide band 5kHz-1MHz: <5mV rms unweighted
- Peak to Peak 0-20MHz: <50mV peak to peak
- Isolation: Input to Output: 4000VDC
- Input to Chassis: 3500VDC (VDR to chassis removed)
- Output to Chassis: 2100VDC
- Regulation: Line = +/- 0.1%, Load = +/- 0.5% (no load to full load)
Mechanical:
- Shelf: Dimensions: 19″ W (48.26cm) x 1.75″ H (4.45cm) x 10.2″ D (25.9cm)
- Shelf weight: 19.84 lbs (8.9kg), excluding rectifier modules
- Rectifiers: Dimensions 2.2″ W (55mm) x 1.73″ W (44mm) x 10.25″ D (245mm)
- Rectifier weight: 1.7 lbs (771gms)
- Cooling: Fan Forced Cooling
Environmental:
- Ambient Temperature: Nominal:
- Range: -20˚C to +70˚C (maximum output power is de-rated above +50˚C)
- Storage: -20˚C to +70˚C
- Humidity: 0-98% RH (non-condensing)
- Altitude: <8,202 ft (2,500m) above sea level, De-rate maximum ambient temperature by 4˚C per 1,000m (3,280 ft) above sea level.
Compliances:
- Safety: EN60950
- Electrostatic Discharge: CISPR24
- Radiated Radio Freq: CISPR22
- AC Harmonics: EN61000-3-2
- AC Flicker & Fluctuation: EN61000-3-3
- Other: CE & RoHS compliant
