Power System Neutral Grounding Fundamentals

In Power System Neutral Grounding Fundamentals, you'll learn ...

• Fundamental considerations for any form of grounding
• Hazards of repetitive restriking
• Basic theory of arcing ground faults
• Definition of ‘effective grounding’

Overview

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Credit: 3 PDH

Length: 21 pages

One of the most critical decisions faced by the designer of a power system is how the neutral of the system should be grounded.

This course presents the subject of neutral grounding in a very structured fashion. First, a simple equivalent circuit is developed for a generic power system, and then each of the options for neutral grounding is ‘tested’ in that equivalent circuit to identify and understand the characteristics of the grounding method. A detailed explanation is offered for each of the following options: Ungrounded neutral; Solidly grounded neutral; Low resistance grounded neutral; High resistance grounded neutral; Low inductance grounded neutral; High inductance (resonant) grounded neutral.

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

• Fundamental considerations for any form of grounding
• Hazards of repetitive restriking
• Basic theory of arcing ground faults
• Definition of ‘effective grounding’
• Impact of grounding method on step- and reach-potentials
• Design criteria for high-resistance grounding
• Limitations of high-resistance grounding
• Impact of grounding on cable selection
• Ideal short circuit stiffness based on total loading
• Application limitations with reactance grounding
• Special considerations with Peterson Coil grounding
• Distinction between system neutral grounding and bonding

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 25 questions. PDH credits are not awarded until the course is completed and quiz is passed.