Troubleshooting Marine Switchgears and Controls (eBook)

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Published Date

March 2019


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Troubleshooting Marine Switchgears and Controls (eBook)

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This publication provides in-depth practical knowledge of electrical appliances associated with modern marine starter safety and control circuits. It explains and illustrates the elements of marine switchgear starters, how to take electrical measurements, and the principles of direct on line (DOL) and Star-Delta (Wye-Delta) motor starters.

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As ships become increasingly automated, problems encountered with the application of automated systems, and the failures of automation and associated processor-based motor starters, may contribute to marine accidents.

 

Marine engineers and ETOs must have a good understanding of automated systems in order to maintain them in an efficient and safe operational condition.

 

This training package should be used to enhance and supplement your knowledge and skills. It will provide familiarisation with a variety of electrical appliances that are part of, or associated with, modern marine starter safety and control circuits.

 

This training package will benefit:

 

  • Management level marine engineers

  • operational level marine engineers

  • electricians with a lack of experience

  • engineering cadets

  • electrical engineering cadets

  • anyone who is starting to work with switchgear starters.

Author’s Introduction

Electrical Safety

Disclaimer

1. Basics of Marine Switchgear Starters

1.1 Basic Elements

1.1.1 Relays

1.1.2 Relay Accessories

1.1.3 Contactors

1.1.4 Contactor Accessories

1.1.5 Overload Relays

1.1.6 Motor Starter Protectors

1.1.7 Motor Starter Protector Accessories

1.1.8 Moulded Case Air Circuit Breakers

1.1.9 Timers (Timer Relays)

1.1.10 Timer Functions

1.1.11 Control Step-Down Transformers

1.1.12 Fuses

1.1.13 Control Devices

1.2 Basic Circuits

2. Basic Measurements

2.1 Measuring a Circuit’s Potential Difference Using a Voltage Tester

2.1.1 Circuit 1

2.1.2 Circuit 2

2.2 Measuring a Circuit’s Potential Difference Using a Digital Multimeter

2.3 Measuring a Circuit’s Integrity Using a Digital Multimeter

2.4 Induction Motor Basics

2.5 Checking Stator Winding

2.5.1 Winding Integrity Check

2.5.2 Insulation Check

2.5.3 Verifying Motor Windings

3. Direct On Line (DOL) Motor Starters

3.1 Induction Motor Starting Characteristics

3.2 DOL Operating Principles

3.3 DOL Starter Operation Basics

3.4 Troubleshooting Techniques for DOL Starter Power and Control Circuits

3.4.1 Appropriate Measurements through the Starter’s Power Circuits

3.4.2 Appropriate Measurements through the Control Circuit

3.4.3 DOL Starter Simulator

3.5 DOL Starter Reversing

3.5.1 Troubleshooting Tips

3.5.2 DOL Reversing Starter Simulator

3.6 Protection and Monitoring Relays

3.6.1 Current Monitoring Relay (Over/Undercurrent Monitoring Relay)

3.6.2 Phase Imbalance Monitoring Relay

3.6.3 Thermistor Protection Units (PTC Relays)

3.7 DOL Starter Simulator with Incorporated Protection and Monitoring Relays

4.Star-Delta (Wye-Delta) Motor Starters

4.1 Starting Characteristics

4.2 Operating Principles

4.3 Star-Delta Starter Principles

4.3.1 Operating Principles

4.4 Fault Finding Techniques

4.4.1 Appropriate Measurements through the Power Circuit

4.4.2 Appropriate Measurements through the Control Circuit

4.5 Star-Delta Starter Application

4.6 Star-Delta Reversing Starter

4.6.1 Operating Principles

4.7 Motor Starters Troubleshooting Chart

Author Comment

Appendix

Attached Diagrams

References

Acknowledgements

Also Available

Ships have become increasingly automated, which has highlighted the inadequacies of existing education and training. Problems encountered with the application of automated systems, and the failures of automation and associated processor-based motor starters, are factors that will undoubtedly contribute to future marine accidents.

 

It is essential that marine engineers and ETOs have a good understanding of automated systems to maintain them in an efficient and safe operational condition.

 

This training package should be used to enhance and supplement your knowledge and skills. It will provide familiarisation with a variety of electrical appliances that are part of, or associated with, modern marine starter

safety and control circuits.

 

 

This training package is appropriate for:

 

  • Management level marine engineers

  • operational level marine engineers

  • electricians with a lack of experience

  • engineering cadets

  • electrical engineering cadets

  • anyone who is starting to work with switchgear starters.

 

Alexandr Yakimchuk

Pr Eng, Dip EE, Superintendent

Jüngerhans Maritime Services GmbH & Co

Title: Troubleshooting Marine Switchgears and Controls (eBook)
Number of Volumes: 2
Number of Pages: 135
Product Code: WS1631EA
Published Date: March 2019
Binding Format: Hardback
Author: Alexandr Yakimchuk

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