Samundra Electrical

Marine Electrical Systems

Function 5 quick-reference — switchboards and protection, motors and starters, transformers and electronics, alternators and parallel running, batteries, instruments and safety systems.

13 Topics 8 Sub-topics

~30 Min Total Reading Time

Fundamental to Intermediate Skill Level

Sub-topics

Choose a sub-topic to read

This module is organised into sub-topics. Pick one to jump straight to its topics.

Fundamentals & Laws Electrical fundamentals: AC vs DC, active and reactive power, electricity flow, and Ohm, Faraday and Kirchhoff laws. 2 Topics Switchboards & Protection Main switchboard safeties, preferential and reverse-power trips, breaker types and trip units, bus transfer and MSB maintenance. 2 Topics Motors & Starters Induction motors, single phasing, megger testing, DOL/star-delta/auto-transformer/soft starters, motor safeties and temperature class. 3 Topics Transformers & Electronics Transformer types and kVA rating, diodes including Zener, thyristors/SCRs, and the oxygen sensor. 1 Topic Alternators & Parallel Running Brushless and self-excited alternators, construction and maintenance, paralleling with synchroscope, AVR and reverse-power protection. 2 Topics Batteries & Supplies Lead-acid batteries, capacity and rating, charging and trickle circuits, and shipboard 440/220 V distribution with lighting. 1 Topic Instruments & Safety Systems Megger IR testing, thermocouples, earth-fault tracing, detectors, intrinsic safety, neutral systems, ICCP and emergency generation. 1 Topic Electrical Oral Questions Examiner-style electrical questions with model answers across the full Function 5 syllabus — final revision before the oral. 1 Topic