Site Power System

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, 300 and 475 watt configurations, the compact assembly contains: power supply with temperature compensated, automatic boost/float battery charge cycle; low voltage disconnect; and programmable alarm contacts. High operating temperature rating with convection cooling make the unit ideal for remote site shelters, railroad wayside bungalows, and pole mount enclosure applications, as well as private network base stations and microwave sites.

 

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Features

  • Well regulated noise free 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 (-40 to +70˚ C), convection cooled, meets AREMA standards
  • Alarm contacts interface with remote monitor systems

 

Models Voltage Range Voltage Adjustment Range Output Amps
SPS 12-20 13.6V 11-15V 20
SPS 24-10 27.2V 22-30V 10
SPS 48-6 54V 44-60V 6

 

Specifications: SPS Series

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: 300W Models: 4A

Protection

Input Voltage: Automatic shutdown, restarts automatically when correct voltage restored.
Input Rush: <2x maximum input current.

Mechanical

Size: 12.25" W x 5.75" H x 2.45" D, (311mm x 146mm x 62mm)
Weight: 3.4 Lbs./1.5 Kg.

Protection

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 Safeguards: Reverts to default voltage if sensor wire becomes short or open. High voltage limit under extreme low temperature conditions
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: 4,200V DC
Input to Chassis: 3,500V DC (VDR to chassis removed.)
Output to Chassis: 2,100V DC

Environmental

Cooling: Convection cooled
Range: -40˚ to +70˚ C operating range; -10˚ to +60˚ @ 100% load rating. derate to 20%
load below -10˚ C and above +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 5-15
Output to Load & 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: 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. When in boost but out of current limit, rectifier automatically switches to float after four hours. If battery current exceeds float threshold when rectifier in float mode, it automatically switches to boost mode.
Alarm and Indicator Controls: 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

 

Internal Alarm Card: 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: 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'.

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 MTBF 358,540 Hours, calculated to Telcordia Standards

* New models, contact factory for availability.