Electrical Grounding and Expectations of Future Loads and Method of Calculation


The first part of this course is intended to prepare the target persons with the ability to perform all electrical grounding system design for Domestic, Commercial and Industrial Facilities and AC Substations.

The second part is to present the proper methods for load calculation calculates. It helps the attendee to understand how to use worksheet to provide an accurate, consistent, and simplified method of determining the minimum size electrical service for a new or existing dwelling looking to add additional electrical load. It helps to prevent oversizing service, which costs more money, and under sizing service, which is a safety/fire hazard.

The course is designed for engineers, new graduate engineers, site field engineers, maintenance engineers and technicians.

Objectives:On completion of this course the target person will be able to:

  • Know all the grounding system terminology,
  • Distinguish between different types of grounding systems,
  • Know design steps for grounding systems,
  • Distinguish the different grounding systems included in Domestic, Commercial and Industrial Facilities,
  • Performing grounding design calculations for AC Substations,
  • Recognize different calculation method for electrical load estimation.
  • Understand the procedures and logic of each method for electrical load estimation.
  • Perform the calculations steps of each method for electrical load estimation.

Course Outlines:

• Introduction to Grounding System Design

• Function of Earthing System

• How Earthing system works

• Advantages/disadvantages of various grounding systems

• The different components of grounding systems,

• Resistance-to-Ground testing

• Determine grounding requirements from soil resistivity results,

• Soil Resistivity testing

• Short circuit level calculations

• Basics of grounding system design

• The required field data for grounding systems design,

• Design steps for grounding systems,

• Design considerations of a grounding grid for medium and high voltage

• The basic principles of grounding in distribution systems

• Ground Potential Rise

• Fault Current Distribution

• Estimation of the Touch and Step Voltages

• Protective or Safety grounding systems

• How grounding can resolve human safety issues in distribution networks

• Safe and unsafe working conditions

• Influenced on Communications/Control Circuits

• Influence on Pipelines

• The impact of lightning strikes on grounding systems

• Ground Impedance Measurements

• Ground Mat Measurements

• Tower Ground Resistance Measurements

• Load Types

• Load Characteristics






• Factors for Individual Facilities

• Building Demand and Load Factor Calculations

• The determination of emergency electric power requirements

• Minimum essential load,

• Uninterruptible load.

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Catatan :

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