HCSVPW
Water Tank Solar

This unit was developed to provide cathodic protection for water tanks in remote areas. It features two independent controls, one for tank or bowl inside and another for tank bottom or riser protection. Constant voltage output control is provided for the bottom/riser circuit and constant voltage or constant potential control is furnished for the tank/bowl circuit. This power supply is shipped complete and is ready for field assembly.

• Constant Voltage Control mode: In this mode of operation, the power supply output voltage is set by the operator and is held constant at the set point. The rectifier's output current changes as load resistance changes.

• Constant Potential Control mode: The operator has the capability of setting the desired reference to structure potential over a wide range (0 - 2.5 volts). A permanent reference half cell is required for the constant potential power supply to operate in potential control mode. The reference cell to structure potential is sensed by the controller and compared to the set potential programmed in by an operator. If there is a difference between the two, the power supply automatically adjusts its output to compensate for the difference.

Control Unit: The HCSVPW has two separate controllable outputs, a constant voltage control for the tank bottom/riser circuit and a constant voltage or potential control for the tank inside/bowl circuit. The water tank controller is a switching DC to DC converter. Both anode controls allow fine adjustment from 0 to rated voltage so just the right amount of current can be applied to the tank/riser circuit and the tank inside circuit. The charge controller is a precise regulator with voltage control and temperature compensation for battery protection. Light emitting diodes provide a visual indication of charge condition, base/riser voltage operation, tank voltage control, tank potential control, and load drop functions. Load drop removes the load from the system whenever the battery terminal voltage drops to a preset level and automatically picks up the load again once the battery has been at least partially recharged.

• Sturdy, ten-foot long steel support structures are provided with units requiring up to four solar panels. All necessary hardware, wire, and conduit are provided with each system. Theft resistant hardware is provided for all mechanical connections. The support structure is designed for easy field assembly and installation. Heavy gauge steel enclosures with hinged lids and sturdy lock hasps are provided for battery box and regulator - other materials are available as an option.

• Efficient solar cells deliver superior watts per square foot of module surface area compared to competitive products. Reduced solar array area results in significant system cost savings.

• Each solar cell is manufactured with a unique and proprietary bypass diode function that prevents power loss and undesirable heat generation if a module is temporarily shaded.

• Crystalline solar cells, low iron, tempered glass front surface, EVA/Tedlar laminate, anodized aluminum frame.

• 100 hours of lead acid autonomy supplied standard with lead acid battery units.

• Standard lead acid batteries are absorbed electrolyte type designed for solar application and carry a five-year warranty. Other battery types are also available.

• Battery voltage matches or exceeds voltage rating of the power supply.

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