A control circuit reversing braking and reverse grading speed control function

  
Circuit shown in Figure 3-168, which uses the controller SA grading speed and reversing control; reverse brake connected to the rotor circuit overcurrent relay KI to control; c
A control circuit reversing braking and reverse grading speed control function - schematic

urrent relay KIi ~ KI3 as a motor three phase overcurrent protection; zero voltage relay KA is used as undervoltage protection.




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