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Week 7: Overview and To Do List

Overview

At the end of the session, the students should be able to:

LO3.1. Explain the various electrical faults and their causes:

  • Grounding or Earth Fault
  • Open Circuit
  • Short Circuit

LO3.2. Explain the steps in troubleshooting electrical circuits based on industry standards

LO3.3. Troubleshoot various non-functional motor starters circuits:

3.3.1 DOL

3.3.2 Forward-Reverse DOL

3.3.3 Wye-Delta

3.3.4 Soft Starter or VFD

To Do List

In order to successfully complete Week 7, please do the following:

LO3.1.

The students shall:

  • Participate and share input in the discussion.
  • Study relevant sections of the industry standards (e.g., IEC) for electrical safety and troubleshooting.
  • Review diagrams and schematics of typical shipboard electrical circuits, identifying potential points of failure and the protective devices used to mitigate faults.
  • Research common causes of electrical faults on ships, including insulation breakdown, loose connections, component failure, and environmental factors (e.g., moisture, vibration).

 LO3.2.

The students shall:

  • Study relevant sections of the industry standards (e.g., IEC) for electrical troubleshooting, focusing on safety procedures, diagnostic tools, and common troubleshooting techniques.
  • Review diagrams and schematics of typical shipboard electrical circuits, identifying potential points of failure and the protective devices used to mitigate faults.
  • Research common electrical problems on ships and their typical causes, including loose connections, faulty components, insulation breakdown, and environmental factors (e.g., moisture, vibration).

LO3.3.

The students shall:

  • Analyze troubleshooting flowcharts or decision trees for each starter type to understand the systematic approach to problem identification and isolation.
  • Research and understand common fault codes or error messages displayed by soft starters and VFDs.
  • Practice using diagnostic tools (multimeters, clamp meters, etc.) to measure voltages, currents, and resistances in faulty starter circuits.
  • Demonstrate step-by-step procedure in troubleshooting faults in a given motor starter circuit.
  • Submit a reflective report.