Contactor Circuits in Three-phase Systems
As of a certain power rating, direct switching of three-phase loads becomes impossible. For this reason, such loads are switched indirectly by means of contactor circuits of many different kinds. The development of a control system and installation with functional control are the key points of this unit. The supplementary sets allow additional control exercises with more complexity to be implemented. The supplementary machine set includes all the necessary machines and equipment for testing direct and indirect control of motors in three-phase circuits.

Note: This Training System is a Basic Equipment Set.

Supplementary Equipment Sets:
Training Concepts:
  • Drawing up a circuit diagram
  • Latching protective circuits
  • Pre-trigger and post-trigger delay relays
  • Changeover contactor circuit with interlock
  • Setting a motor protection relay as per motor rating plate
  • Limiting control with mechanical end-limit switches and reversal of direction
  • Project planning, design and commissioning of complex circuits
  • Operating principle and pin assignment
  • Function testing and fault finding
  • Connecting three-phase motors
  • Pulsed contactor circuits
  • Star-delta circuits
  • Protective and safety functions
Product: Contactor Circuits in Three-phase Systems
Product Code: EST 2.1

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