Marine Electrical Power Systems:
Images:
Power System Grounding Figures

Figures created by Norbert Doerry for the Power System Grounding document (plus extras)

Ungrounded system with grounding lamps

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Ungrounded system

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Ungrounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Ungrounded system with grounding lamps and ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Voltage waveforms for ungrounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

LTSpice schematic for ungrounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

HRG System

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LTSpice schematic for HRG system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Voltage waveforms for HRG system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Solidly grounded system

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Voltage waveforms for solidly grounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

LTSpice schematic for solidly grounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Solidly grounded system ground fault current

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Differential mode circuit example

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Common mode circuit example

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Use of structure for current carrying conductor

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Common-mode definiton circuit

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Common mode equivalent circuit for ungrounded system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Common mode equivalent circuit for HRG system with ground fault

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

Grounding lamps schematic

Image (C) Copyright 2025 by Norbert Doerry – licensed via CC BY 4.0

CorelDraw File

LTSpice Files

(C) Copyright 2025 Norbert Doerry

This work by Norbert Doerry is licensed under CC BY 4.0