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Short Circuit Study


An examination of an electrical framework that decides the magnitude of the currents that flow during an electrical fault.


short circuit occurs when part of a current carrying conductor touches or comes in contact with another wire or part of the circuit and gives the electricity a path of less resistance to flow. In simple terms, a short circuit is simply a low resistance connection between the two conductors supplying electrical power to any circuit. 

This results in excessive amount of current flow in the power systems through the path of low resistance and may even cause the power source to be destroyed and causes more heat and fires. That’s why we are required to perform a comprehensive short circuit study and use protection devices accordingly to counter short circuit currents in power systems.

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The National Electrical Code emphasizes the importance of short circuit studies as stated in article 110.10 in the 2017 revision:

"The overcurrent protective devices, the total impedance, the equipment short-circuit current ratings, and other characteristics of the circuit to be protected shall be selected and coordinated to permit the circuit protective devices used to clear a fault to do so without extensive damage to the electrical equipment of the circuit".   

A short circuit study is required to identify the fault current levels at each electrical point in the facility and it is the first step in ensuring compliance with the requirements of the NEC.

 
 

Why Short Circuit is Dangerous?

At the point when Two Nodes of an Electric Circuit, planned to be at Different Voltages, Form an Abnormal Connection that causes:

  • Circuit Damage
  • Flames
  • Blasts
  • Overheating
  • A Short Circuit Fault is Thousands Time More Powerful as compared to Normal Current.

our goal is to interrupt the fault current as early as possible and this can be achieved with the help of Protective device settings.

Providing you a Cost Effective solution!

The short circuit studies at shortcircuitstudys.com is done by our experts who provide short circuit studies using the latest software (ETAP) and providing comprehensive and innovative engineering studies solutions for your data center or facility

 

To Learn More About Industrial & Commercial Power Systems Studies

AllumiaX, LLC is a Seattle based company with a vision to be a global leader in Industrial & commercial power systems engineering, consulting, and field-services. GeneralPAC.com is dedicated to the people who make power and energy work! The GeneralPAC team promotes asking, learning, and sharing information and concepts about Power Systems through various platforms like youtube, forums, and webinars.

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Power System Studies

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Power System Video Tutorials

To get access to power system video tutorials, visit  generalpac.com

 
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why the short circuit analysis is a major requirement for power systems protection?

In brief terms, A Short circuit study is very crucial in power systems. In addition to being a prerequisite of Arc flash study. Without performing short circuit analysis, we cannot go for the arc flash study which is a recommended practice for any power system facilities.

In order to properly understand the importance of short circuit study, we have split it into bullet points, check out below!

Short circuit study is used to determine the available fault current or short circuit current at each point in the system.

Based on that study, power system engineers can easily determine the required interrupting capacity of the circuit breakers which forms the basis of designing a proper relaying system.

A Short Circuit Analysis will help to ensure that personnel and equipment are protected by establishing proper interrupting ratings of protective devices (circuit breaker and fuses).

The results of short circuit studies are used in predicting the incident energy levels and completing a detailed protective device coordination study

Latest Software for short circuit study

Various internationally recognized software are available worldwide which can be used to perform short circuit study for commercial and industrial facilities. The topmost, widely wised is:

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