Previous in Forum: Magnetic Flux Energy   Next in Forum: Alternator
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
3 comments
Rate Comments: Nested
nicrajkumar
Active Contributor

Join Date: Jun 2011
Location: Gurgaon, Haryana, India
Posts: 10

Short Circuit Setting of DC MCCB

11/26/2011 5:13 AM

What is the short circuit setting of MCCB

__________________
 lets talk some technical
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Short Circuit Setting of DC MCCB

11/26/2011 10:58 AM

[PDF] Working with the Trip Characteristic Curves of ABB SACE Low ...
Register to Reply
nicrajkumar
Active Contributor

Join Date: Jun 2011
Location: Gurgaon, Haryana, India
Posts: 10
#3
In reply to #1

Re: Short Circuit Setting of DC MCCB

11/28/2011 12:07 AM

Are the setting of AC & DC MCCB's are same?

__________________
 lets talk some technical
Register to Reply
Patrick Whowha
Power-User

Join Date: Nov 2009
Location: Nnewi,Anambra,Nigeria
Posts: 146
#2

Re: Short Circuit Setting of DC MCCB

11/27/2011 5:26 PM

Your setting of the the mccb depends on the load current and the factor k which is dependent on the cable sizing of your installation. Short circuit current = rated load current multiplied by the factor k.When you know the size of cable used for the installation,check your table for the right k value.We have 1.0,1.5,1.8,2.5,3.5 etc based on the size of cable in the installation.

set or adjust the mccb short circuit current to the calculated value to trip your load or installation from the damaging effect of short circuit fault.If the mccb has no selectable ranges,the buy one with the exact value in the market to protect your load.

Read further on short cct calculations for protective devices like breakers and fuses.

Patrick Whowha

__________________
 Patrick Whowha
Register to Reply
Register to Reply
Have a Different Question?
3 comments
Copy to Clipboard

Users who posted comments:

lyn (1); nicrajkumar (1); Patrick Whowha (1)

Previous in Forum: Magnetic Flux Energy   Next in Forum: Alternator

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (146 right now)
Show Members
Advertisement