Use the Alpha Energy Solar Power Supply Configurator to customize and buy a 12 volt off-grid system today.
- Cost-effective alternative to AC line extension
- Reliable power where you need it, when you need it
- Minimum of six days of design load autonomy
- Engineered for pole or pad mounting, and rapid field deployment
Applications include: Security systems, traffic systems, emergency power, cathodic protection, navigational aids,
WiMax and SCADA.
Solar Power Supply (SPS) system can be configured to provide a range of DC or AC power outputs. Systems include
the most recent advances in PV manufacturing, electronic controls and power management. Standard controls
include temperature-compensated 3-stage battery charging, battery low voltage disconnect, lightning protection
and complete circuit protection. Each system comes with a two-year limited warranty (extended warranties are
available), while the PV modules carry a 20 to 25-year performance guarantee.
The SPS design incorporates a minimum of six days load autonomy, providing reliable power with no operational
or maintenance costs and near-zero annual load loss probability. Systems are engineered for pole or pad
mounting and packaged for easy installation.
Options Include: Multiple output breakers, data logging of system operating parameters, alarm outputs for critical
system parameters, DC to AC inverter for AC loads and additional enclosure for customer use.
Specifications | SPS12-85/108G | SPS12-110/170G | SPS12-255/324G |
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| Electrical Specifications, Solar Panel |
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| Maximum Power | 85W | 55W | 85W |
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| Power Tolerance | +-5% | +-5% | +-5% |
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| Maximum Power Voltage | 17.5Vdc | 17.3Vdc | 17.5Vdc |
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| Maximum Power Current | 4.86A | 3.18A | 4.86A |
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| Open Circuit Voltage | 22.0Vdc | 21.7Vdc | 22.0Vdc |
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| Open Circuit Current | 5.36A | 3.47A | 5.36A |
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| Maximum System Voltage | 600Vdc | 600Vdc | 600Vdc |
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| Nominal Operating Cell Temperature | 47° C, +-2° C | 47° C, +-2° C | 47° C, +-2° C |
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| Operating Temperature | -40° C to +90° C | -40° C to +90° C | -40° C to +90° C |
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| Dielectric Isolation Voltage | 1000Vdc | 1000Vdc | 1000Vdc |
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| Maximum Wind Resistance | 60m/s | 60m/s | 60m/s |
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| Maximum Hail Diameter @ 80km/h | 25mm | 25mm | 25mm |
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| Mechanical Specifications, Solar Panel: |
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| Length(in/mm) | 46.29/1176 | 39.84/1012 | 43.29/1176 |
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| Width(in/mm) | 20.78/528 | 17.51/445 | 20.78/528 |
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| Depth(in/mm) | 1.25/32 | 1.25/32 | 1.25/32 |
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| Weight(kg/lb.) | 7.5/16.5 | 6/13.2 | 7.5/16.5 |
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| Frame | Aluminum | Aluminum | Aluminum |
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| Front Side | Glass, 3.2mm | Glass, 3.2mm | Glass, 3.2mm |
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| Encapsulant | EVA | EVA | EVA |
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| Cell Type | Single Crystal Cell | Single Crystal Cell | Single Crystal Cell |
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| Number Cells | 36 in Series | 36 in Series | 36 in Series |
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| General Specifications, Rack |
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| Angle | 15 to 60° from Horizontal | 15 to 60° from Horizontal | 0 to 90° |
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| Pole | Customer Supplied 2.5” Schedule 40 or 80 | Customer Supplied 2.5” Schedule 40 or 80 | Customer Supplied 3” Schedule 40 or 80 |
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| Electrical Specifications, Solar Controller |
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| Rated Solar Input | 10A | 10A | 20A |
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| Rated Load | 10A | 10A | 20A |
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| Current Overload | 25% for 5 minutes | 25% for 5 minutes | 25% for 5 minutes |
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| Regulated Output Voltage | 14.1Vdc | 14.1Vdc | 14.1Vdc |
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| Load Disconnect | 11.5Vdc | 11.5Vdc | 11.5Vdc |
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| LVD Reconnect | 12.6Vdc | 11.5Vdc | 11.5Vdc |
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| Temperature Compensation | -28 mV/° C | -28 mV/° C | -28 mV/° C |
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| Self-Consumption | 6 to 10mA | 6 to 10mA | 6 to 10mA |
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| Operating Temperature | -40 to +85° C | -40 to +85° C | -40 to +85° C |
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| Battery Charger | True 0 to 100% PWM duty cycle | True 0 to 100% PWM duty cycle | True 0 to 100% PWM duty cycle |
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| Setpoint accuracy | < 35mV | < 35mV | < 35mV |
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| General Specifications, Battery |
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| Voltage | 12V (nominal) | 12V (nominal) | 12V (nominal) |
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| Capacity | 108 Ah at the 100 hour rate, to 1.75 VPC at 27° C (80° F) | 170 Ah at the 100 hour rate, to 1.75 VPC at 27° C (80° F) | 255 Ah at the 100 hour rate, to 1.75 VPC at 27° C (80° F) |
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| Type | Gel | Gel | Gel |
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| Plate Alloy | Lead Calcium | Lead Calcium | Lead Calcium |
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| Element, Post | 3/8” x 16 Stainless Steel Stud Posts | Offset post with Horizontal Hole, Stainless | 3/8” x 16 Stainless Steel Stud Posts |
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| Mechanical Specifications, Integrated Control/Battery Enclosure |
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| Size | 24x25x14 | 24x25x14 | 24x25x15 |
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| Weight (lb.) | 109 | 144 | 270 |
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