The utility model relates to
motor power supply control technical field discloses a kind of
dilution fan motor protector wiring structure, including main power supply circuit and
control circuit, power supply in main power supply circuit is connected to first
contactor main contact and second
contactor main contact respectively through
circuit breaker, and then connect corresponding first
dilution fan and second
dilution fan again.
Control circuit includes dilution fan selection circuit, fan reset
control circuit and motor protector.
Dilution fan selection circuit one end is connected with second motor protector normally closed contact point, and other end is connected with power supply negative pole.Fan reset
control circuit is connected with motor protector control input port.Motor protector real-time acquisition main power supply circuit
voltage, trigger corresponding port action under abnormal condition, cooperate with control circuit, realize two fans " one operation one spare "
interlock conduction.The structure provides intuitive fault feedback, reduces maintenance cost, eliminates
software logic failure or artificial misoperation risk, improves
system security and reliability.