EST 2.1 CONTACTOR CIRCUITS IN THREE-PHASE SYSTEMS 230V

The development of control circuits and operations constitute the training focus of this equipment set.

• Drafting a circuit diagram
• Configuring a motor protection relay in line with the motor’s rating plate
• Contactor circuits with latching
• Contactor circuit with malfunction alarm triggered by motor overload and including storage of error message
• Contactor circuit with drop-out delay relay
• Contactor circuit with pick-up delay relay
• Pulse-triggered contactor circuit
• Reversing contactor control with contactor interlocking
• Contactor-type reversing control with contactor and momentary-contact interlocking
• Limiting control with mechanical proximity switch and rotation reversal
• Star-delta circuit
• Automatic star-delta circuit
• Automatic star-delta reversing circuit