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dwg# i-8007 

Page  2 

Section 3:  Step Up Transformer 
 
 

Input Voltage:  10.5  -  16 DC volts  

 

 

Current:  0 - 50 amps nominal 

                     

           

 

Output Voltage: 21 - 32  DC volts  = twice input voltage 

             

 Current: 0 - 25 amps continuous  

 
3.1  Common  Connection 
 
Using wire of sufficient amperage for the load connection (#12 AWG or better) connect the negative of the battery and the 
negative connection of the load to the COM Terminal.  
 
3.2  Load Power Connection 
 
Using a wire of sufficient amperage for the load power (#12 AWG or better) connect the positive of the load to the High 
Terminal.  
 
3.3  Input Power Connection 
 
Using wire of sufficient amperage for the input connection (#12 AWG or better) connect the positive of the battery to the 
Low Terminal.    
 

Section 4:  Step Up and Step Down Transformer 
 

       Battery Voltage Equalization 

 
 

Input/Output Voltage High:  12  - 32 DC volts  

 

Current:  0 - 25 amps nominal 

            

This is the voltage off the top of your battery string nominally 24V    

 

 

 

Input/Output Voltage Low:   6  - 16   DC  volts 

            Current:  0 - 50 amps continuous  
     

This is the midpoint voltage off your battery string nominally 12V

    

 

 

Unit uses its bi -directional capability to take power from the higher voltage battery and transfer the excess charge to the 
lower voltage battery.  The net effect is to bring the battery voltages to be exactly equal.  As well, as load current is taken 
off the battery, the stronger battery will support the weaker battery, making your battery power last longer. 
 
 4.1  Common Connection 
 
Using wire of sufficient amperage for the load connection (#12 AWG or better) connect the negative of the battery string to 
the COM Terminal.  

Nominally this is the negative connection of the 24V battery. 

 
4.2  Low  Voltage Connection 
 
Using a wire of sufficient amperage for the load power (#12 AWG or better) connect the midpoint of the battery set to the 
Low Terminal.  

Nominally this is the 12V point in your 24V battery string. 

 
4.3 High Voltage Connection 
 
Using wire of sufficient amperage for the input connection (#12 AWG or better) connect the positive of the battery to the 
High Terminal.   

Nominally this is the 24V positive connection of the 24V battery.  

 
Note: It may take a while for the unit to equalize the voltages of the batteries as a considerable amount of charge 
movement between batteries may be required depending upon the state of charge and quality of the respective batteries. 

 

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