{}

Our Brands

Welcome to the Schneider Electric Website

Welcome to our website.
Search FAQs
What is the selection criterion of Circuit Breakers for the Capacitor bank application.
The selection should be done after derating the Circuit Breaker taking into consideration voltage variation and capacitors tolerances that could increase nominal current up to 1.5In.
The Derating factor of 1.5In
Where In = Q/ ( Square root of 3 ) Un
Q = Capacitor Power
Un = Nominal Voltage
Choose the Micrologic with delay time selection, so that the Circuit Breaker does not trip due to initial high inrush current.
Also to be taken into account are the parameters like supply frequency, operating voltage & harmonics level of the power system for such application.
Refer the attached sheet for further details for selection of Circuit Breaker for Capacitor duty application.
Note: Use the phase barrier between the phases in Circuit Breaker to prevent flashover due to heavy inrush current.

Schneider Electric Nigeria

Attachment(s)
CB_Selection.pdf [256.81 KB]
What is the selection criterion of Circuit Breakers for the Capacitor bank application.
The selection should be done after derating the Circuit Breaker taking into consideration voltage variation and capacitors tolerances that could increase nominal current up to 1.5In.
 
The Derating factor of 1.5In
Where In = Q/ ( Square root of 3 ) Un
      Q = Capacitor Power
      Un = Nominal Voltage
 
Choose the Micrologic with delay time selection, so that the Circuit Breaker does not trip due to initial high inrush current.
 
Also to be taken into account are the parameters like supply frequency, operating voltage & harmonics level of the power system for such application.
 
Refer the attached sheet for further details for selection of Circuit Breaker for Capacitor duty application.
 
Note: Use the phase barrier between the phases in Circuit Breaker to prevent flashover due to heavy inrush current.

Schneider Electric Nigeria

Attachment(s)
CB_Selection.pdf [256.81 KB]
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Your browser is out of date and has known security issues.

It also may not display all features of this website or other websites.

Please upgrade your browser to access all of the features of this website.

Latest version for Google Chrome, Mozilla Firefox or Microsoft Edgeis recommended for optimal functionality.
Your browser is out of date and has known security issues.

It also may not display all features of this website or other websites.

Please upgrade your browser to access all of the features of this website.

Latest version for Google Chrome, Mozilla Firefox or Microsoft Edgeis recommended for optimal functionality.