Training

Fundamentals of Earthing Design – 3 Day Course

This is the premier earthing design training course in the region − an intensive program in fundamental earthing principles and the practice of earthing system design.

Participants will develop an understanding of the science behind earthing, the associated mechanisms that lead to earthing related risk, and an ability to manage them through effective design.

Course Overview

The complexities of earthing system design are explained and modelled in this course through the application of theoretical and practical sessions.

This 3-day course provides a comprehensive treatment of the principles and practices used in the design and testing of earthing systems to effectively manage and assess their performance, condition and risk.

The course is structured to provide a clear presentation of principles and includes lectures with practical examples, as well as personal involvement in problem solving by computer analysis.

Who Should Attend?

This in depth course is designed for those responsible for power system or other assets that rely on earthing systems for their safe and correct operation.

A solid background in electrical engineering is essential.

Roles

  • Electrical Engineers
  • Consultants
  • Project Engineers
  • Electrical Engineering Managers
  • HV Specialists
  • Maintenance Managers

Industries

All industries, including:

  • Mining
  • Oil & Gas
  • Power Utilities (incl. Generation)
  • Renewables
  • Water and Gas Utilities
  • Rail
  • Building & Construction
  • Tunnelling and Roads
  • Heavy Industry

“The presentations were interesting and to the point.”

What You Will Learn During This Course

Legal Obligations

  • Is designing to standards good enough?
  • What is a defensible position?

Risk Management

  • How do I use risk?
  • Am I already using risk?
  • How do I make sense of options available?

What is Safe?

  • How does current cause death?
  • What safety criteria are applicable and how do I decide which ones to use?
  • How do I determine acceptable step and touch voltages?

Earthing Standards

  • What do the standards require and which one should I use?
    • AS 2067
    • AS/NZS 1768
    • AS/NZS 3000
    • AS/NZS 3007
    • AS/NZS 3835
    • AS/NZS 4853
    • AS/NZS 60479
    • AS/NZS 7000
    • EG-0, EG-1
    • IEC 61936
    • IEEE 80
    • IEEE 998

Soil Resistivity

  • What are the electrical properties of soil?
  • How do they vary and how can I measure them?
  • How can I recognise inadequate test results?

Earthing System Design

  • What is the right process?
  • How do I design an earth grid, taking into account soil resistivity, protection settings, network configuration and auxiliary paths?
  • What’s the difference between earth grid design and earthing system design?

Earth Potential Rise (EPR)

  • What happens when current flows into the ground?
  • How and where do touch
  • voltages appear?
  • How do I determine the
  • optimum model?
  • When should I use multi-layer
  • soil models?

The Earth Fault Circuit

  • Where does earth fault current
  • actually flow?
  • Are interconnections to other earthing systems helpful
  • or hazardous?
  • What is inductive coupling and how does it guide current flow?

Transferred Hazards

  • How do earth faults cause hazards on other systems, like comms, pipes, fences, conveyors and railway lines?
  • What is electromagnetic coupling and how can it lead to unexpected voltages?
  • How do I manage these risks?

Overhead Line Earthing

  • What are overhead earth wires for?
  • How do overhead earth wires, affect touch voltages?
  • How do I model earth wires, shield wires and neutrals?

Cable Earthing

  • What makes cable earthing
  • different?
  • How much current flows in a
  • cable screen?
  • What are coupling factor and
  • screening factor?
  • What is the impact of cable selection (heavy/light duty, coaxial/screened, single-/multi-core)?
  • Where and how should I earth my cable screens (both ends/ single point / cross-bonded)?
  • How can underground to overheard transitions cause higher touch voltages?

Lightning and Surge Protection

  • How does lightning compare with other power system transients?
  • How does my earthing design affect surge protection performance?
  • What are the methods for lightning protection design (rolling sphere, collection volume, other)?
  • What is Early Streamer Emitter technology, and does it work?

Distribution Earthing

  • What resistance should the earth grid be?
  • Should HV and LV be common bonded or separately earthed?
  • What is CMEN? What is DBZS?

Design Case Studies

  • What is unique about earthing design for each of distribution, industrial and transmission substations?
  • How do large interconnected earthing systems and the MEN impact our designs?

Design Benefits

How can good design:

  • effectively manage earthing risk?
  • help achieve operational security?
  • reduce project installation cost?
  • reduce lifetime costs?
  • improve reliability?
  • improve testability?

“Course material was presented in a straightforward easy to understand manner.”

Locations and Dates

This course is offered in most of the major cities in Australia and New Zealand.

Please see our up to date Course Schedule for details, and please let us know if your preferred location is not available – we may add it if there is sufficient interest.

Please note that tailored, on-site training courses may also be possible.

About the Presenters

Safearth has globally recognised expertise in all areas relating to earthing systems. Our trainers are leaders in their fields and are experienced, not only in training, but also in providing consulting services, including design, specification, installation support, commissioning of new earthing systems, as well as audit, test and refurbishment support for existing systems. Our experience extends to all areas of power generation, reticulation and use, including substations, transmission and distribution systems, power stations, industrial plants and mining operations.

“When we asked questions, they had answers.”

Course Fee

$3,050pp + GST (all locations)

Ask us about early-bird discounts and group discounts.

The fee includes:

  • all lectures and workshops
  • morning and afternoon tea and lunches for the three days.
  • detailed course notes
  • course dinner on day one (drinks not included)

Conditions

Full payment is required to reserve position.

Cancellations or transfers will only be accepted in writing up to 14 days prior to commencement of the training course. After that time, no refunds can be given. A replacement training course participant may be substituted.

This course is offered in good faith and has been carefully planned and prepared. If, however, due to circumstances outside the control of Safearth we are unable to deliver the course in accordance with the published details, our liability shall be limited to the refund of the course fee.

Registration

To apply for a place on this course, please click Apply Now below and complete the form.

Successful applicants will be offered a placement and issued an invoice for the course fee, which must be paid in full to reserve position.