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Site Power System
The Site Power System (SPS) series provides a complete DC power solution that integrates quickly with batteries, loads, and monitors. Available in 12, 24 and -48 volt configurations, the compact 300 watt assembly contains: power supply with temperature compensated, automatic boost/float battery charge cycle; low voltage disconnect; and programmable alarm contacts, all in a compact case. Versatile installation options include wall mount, 19" rackmount, and DIN-Rail. High operating temperature rating with convection cooling make the unit ideal for remote site shelters and pole mount enclosure applications, as well as private network base stations and microwave sites.
Features
- Well regulated noise free 300 watt output - no interference with sensitive electronic loads
- Separate Battery Charger output with remote temperature compensation sensor
- Automatic Boost voltage output after AC power failure quickly recovers battery
- Low voltage disconnect protects batteries from over discharge
- Output current indicator LEDs
- Wide temperature operating range (-10 to +60° C) with convection cooling - no fans to service
- Alarm contacts interface with remote monitor systems
- Active load sharing allows wiring in N+1 configuration for redundancy and/or in parallel for
higher current capacity
- Optional Rack and DIN-Rail mounting bracket
Models |
Input
All Models |
Output
Voltage |
Output
Amps |
Size/Weight
All Models |
SPS 12-20 |
100 - 275 VAC,
50 - 60 Hz. |
12 |
20 |
12.25” W x 5.75” H x 2.45” D |
SPS 24-10 |
24 |
10 |
(311mm x 146mm x 62mm) |
SPS 48-6 |
48 |
6 |
3.4 Lbs./1.5 Kg. |
Specifications: Models SPS 12-20, SPS 24-10, & SPS 48-6
AC Input
Nominal: 110/220V, 50/60Hz
Voltage Range: 100-275V AC (full power output), 85-100V AC (reduced power output)
Frequency Range: 45-66Hz
Power Factor/Efficiency: >0.99 (full load)/87%
Input Fuses: Fuses in phase & neutral
Maximum Input Current: 4A
Protection:
Input Voltage: Automatic shutdown, restarts automatically when correct voltage restored.
Input Rush: <2x maximum input current.
| DC Output |
SPS 12-20 |
SPS 24-10 |
SPS 48-6 |
| Nominal Voltage: |
12V |
24V |
48V |
| Rated Voltage: |
13.6V |
27.2V |
54V |
| Voltage Range: |
11-15V |
22-30V |
44-60V |
| Maximum Current: |
23A |
10A |
6A |
Redundancy/Scalability: Ok to wire in parallel, active load sharing
Temperature Compensation: Output voltage slope adjustable 0.1 to 0.2%/°C; 3' cable with battery lug sensor provided
Regulation:
Line/Load: ±0.1%/±0.5% (no load to full load)
Hold-up Time: >15ms for 20% output voltage drop.
Start-up Time: Walk-in delay 2 seconds (depends on AC input voltage)
Protection
Current Limit: Adjustable to 50-100% of maximum rated current
Over Temp: Automatic current turndown, backup shutdown protection
Polarity Reversal: Output fuse with crowbar diode
Over Voltage: Adjustable limit
Noise: (under nominal conditions)
Ripple <100Hz: <5mV rms
Voice Band 100Hz to 5KHz: <1mV rms psophometric
Wide Band 5kHz to 1 MHz: <5mV rms
Peak to Peak 0 to 20MHz: <50mV p-p
Isolation
Input to Output: 3000V AC
Input to Chassis: 2500V AC (VDR to chassis removed.)
Output to Chassis: 1500V AC
Environmental
Cooling: Convection cooled
Range: -10 to +60°C
Humidity: 5-95% RH (non-condensing)
Altitude: <7500m de-rate maximum ambient temperature by +4˚ C per 3000m above sea level
Mechanical
Case: Painted Aluminum
Mounting: Wall or enclosure back plane, vertical orientation
Dimensions: 12.25" W x 6.40" H x 2.45" D; (311mm x 163mm x 62mm)
Weight: 3.4 lbs.;1.5kg
Connections:
AC: IEC 320 universal connection, 3 foot power cord provided, NEMA 5-15R
Output to Load: 4 way lumberg macromodule, screw style
Output to batteries: 4 way lumberg macromodule, screw style
Temperature Sensor: 2 way lumberg macromodule, (pre-installed on 6 foot cable)
Monitor Connection: RJ45
Standard Features
Output Current Indicator: Ten segment red LED "dot" display
Auto Float/Boost:
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Rectifier enters boost mode at power up. When battery current reduces to float threshold limit (adjustable from 0.1A to 40% MRC), unit reverts to float voltage setting. When in boost but out of current limit, rectifier will automatically switch back to float after approximately four hours. If battery current exceeds the float threshold limit when the rectifier is in float mode it will automatically switch to boost mode. |
| Alarm and Indicator Controls: |
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Positive V out, Load share signal (in/out), External shutdown, Open collector 'off normal' alarm (OSVD, over temp. limit), LVD synchronisation signal (in/out) Temperature compensation input signal, Open collector rectifier fail (via 4k7 resistor), Open collector mains fail, Negative V out |
| Low Voltage Disconnect: |
SPS 12-20 |
SPS 24-10 |
SPS 48-6 |
| Voltage Adjustment Range: |
10-12V |
19-24V |
39-48V |
| Maximum Load Current: |
20A |
10A |
6A |
| Internal Alarm Card: |
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4x N.O or N.C (selectable) relay contacts with single common for rectifier fail, off normal, float low, float high. 1x VF changeover relay contact for mains fail. Relay contacts rated at 100V DC 1A. Connections via "mini combicon" connector accepts 16 AWG (1.5mm diameter) wire. |
| LED Indicators: |
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Green - AC on. (primary converter operating) Green - Temperature probe connected and within normal limits. Red - Rectifier 'failed'. Green - Rectifier in 'float' mode. Yellow - Rectifier in 'boost' mode. Yellow - Rectifier in 'current' limit. Red - Rectifier 'off normal'. (over temp., OVSD, low output volts) |
Internal Adjustments: Float voltage, Boost voltage, Over voltage shut down, Current limit, Temperature compensation slope, Auto
boost to float threshold limit, Load disconnect voltage, Load disconnect hysteresis voltage
Design Standards: EN60950, Electrostatic Discharge: CISPR24, Radiated Radio Frequency: CISPR22, AC Harmonics: EN61000-3-2, AC Flicker and Fluctuation:
EN61000-3-3, CE
Optional Equipment: Rackmount Bracket, 19", 4 RU (7 inches), DIN-Rail Adapter Bracket
Specs subject to change.
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