Description of functions
The SCR 48 V charge regulator has been especially designed for the Superwind 350 / 48 V wind
generator and guarantees optimum charging of the batteries. As long as the actual charging voltage is
below the maximum charging voltage, the current from the wind turbine is directly led to the batteries.
Charging current flowing to the batteries is indicated by the GREEN LED “Charging”.
As soon as the batteries have reached their maximum charging voltage, the PWM circuit variably diverts
the wind turbine´s surplus power to the dumpload power resistor in order to keep the voltage constant.
This state of charge is indicated by the ORANGE LED “Diversion”.
Thus, with the batteries even fully charged, the wind turbine continues operating, electrically loaded by the
dumpload power resisitor and is prepared to provide useable power as soon as electric consumers are
switched on.
Choosing the place of installation
The charge regulator is designed for indoor use and shall be mounted at a place well protected from the
effects of weather. The charge regulator´s temperature sensor has a cable length of 400 cm and should
be mounted close to the batteries.
The distance between the charge regulator and the battery should be minimum 30 cm but not exceed 400
cm. The distance between the charge regulator and the power resistor should not exceed 200 cm.
The power resistor has protection class IP 54 and can be mounted outdoors (e.g. outside a switch
cabinet) and must be ventilated properly. It should be mounted vertically with the cable outlet at the
bottom. Never mount it on a flammable surface and take care, that no flammable items will be close to the
resistor. Consider that the resistor will dissipate all the wind turbine´s power into heat when the batteries
are fully charged.
On a ship, a good place for the power resistor is the engine compartment.
Connecting the charge regulator
Before connecting the charge regulator, prevent your wind generator from unintended starting. If you have
a stop switch, turn to STOP. If not, connect the two generator cables from the wind turbine together
(caution: disconnect the battery before!) or tie one of the rotor blades to the mast (if accessible).
Mount the regulator and the power resistors to a dry, plain and non flammable surface. The resistor may
also be mounted outdoors in a vertical position with the cable outlets at the bottom. Use the mounting
holes.
Connect the charge regulator as shown at the wiring diagram below.
For all cables connected to the charge regulator terminals, use appropriate cable end sleeves.
IMPORTANT ! To prevent your system from damages, the cables must be connected in the order as
follows:
1. Connecting the temperature sensor
Connect the two cables of the temperature sensor to the terminals 1 and 3 Temp.-Sensor. If for any
reason the temperature compensation function shall not be used, a small cabel bridge must be connected
between terminal 1 and 2. With neither temperature sensor nor bridge connected, the SCR 48 does not
work correctly.
2. Connecting the power resistor
Connect both of the resistor's cables to the terminals Resistor. In case you need to extend the cables
only use cables with a cross section of minimum 4 mm² (AWG 12).
