Marine Electrical Power Systems:
Ship Electrical Distribution System Design:
Electrical Distribution System Grounding

Last Update: November 2, 2024

Essential Questions

Essential Question Level of Thinking
How are system grounding, equipment grounding (bonding - protectiveearthing), and common mode / EMI grounding different and related?
Understand
What are the principal features and methods of implementation of ungrounded systems, high-resistance grounded systems, and solidly grounded systems?
Understand
What grounding methods are appropriate for Primary buses, distribution buses, secondary buses, and special buses?
Understand
How does one determine the required resistance of a neutral grounding resistor?
Apply
What are the advantages and disadvantages of a grounding bus?
Understand

Text Material

Presentation Material

Video Material

Experiment 1: Delta-Delta Transformer – Balanced Operation – ungrounded

Experiment 2: Delta-Delta Transformer – ungrounded system – Ground Fault

Experiment 3: Delta-Delta Transformer – ungrounded system – unbalanced load

Experiment 4: Wye-Delta Transformer – ungrounded system – unbalanced load

Experiment 5: Delta-Wye Transformer – ungrounded system – unbalanced load

Experiment 6: Delta-Wye Transformer – 4 wire – ungrounded system – unbalanced load

Experiment 7: Delta-Wye Transformer – 4 wire – ungrounded system – ground fault

Experiment 8: Delta-Wye Transformer – 4 wire – solidly grounded system – unbalanced load and ground fault

Experiment 9: Delta-Wye Transformer – 4 wire – HRG system – unbalanced load and ground fault

References

IEEE Std 45.1 IEEE Recommended Practice for Electrical Installations on Shipboard--Design

IEEE Std 45.3 IEEE Recommended Practice for Electrical Installations on Shipboard--Systems Engineering

IEEE Std 3003.1 IEEE Recommended Practice for System Grounding of Industrial and Commercial Power Systems


(C) Copyright 2024 Norbert Doerry

This work by Norbert Doerry is licensed under CC BY 4.0

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