Professional Development · Trades & Technical Skills · Industrial Installation and Drive Technology

Motor Protection, Variable Speed Drives and Soft Starters

5 Abschnitte1 Karteikarten-Decks1 Quizze

This topic examines the methods used to protect three-phase induction motors against overload and fault conditions, and the electronic drives used to control motor speed. Students will understand thermal overload relays and PTC thermistors, the principles of variable speed drives (VSDs) using pulse-width modulation and vector control, soft starter technology, energy-saving calculations, and the installation requirements relating to EMC filters and output cable lengths.

Inhaltsübersicht

  • 1. Motor Overload Protection – Thermal Relays and PTC Thermistors
  • 2. Variable Speed Drives – Principles and Pulse-Width Modulation
  • 3. Soft Starters – Thyristor Ramp and Bypass Contactor
  • 4. Energy Savings with VSDs and Application of the Affinity Laws
  • 5. EMC Filters, Output Cable Lengths and Installation Requirements
Motor Protection, Variable Speed Drives and Soft Starters
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