Short circuit can produce cough thermal and electromagnetic forces to destroy any protective device. When selecting a protective device, it is very important to consider the available short circuit amperage, or SCA, which is the potential amperage at any site in the system.

1. Home  Electrical
What is Rating protection devices and explain
  
by Zillionsbuyer — July 9, 2020 in Electrical  0
0
SHARES
3
VIEWS
Share on Facebook Share on Twitter 
Rating protection devices:
*Short circuit can produce cough thermal and electromagnetic forces to destroy any protective device.
*When selecting a protective device, it is very important to consider the available short circuit amperage, or
SCA, which is the potential amperage at any site in the system.
* The SCA will be measured at the equipment terminals, the utility transformer and the distribution panel.
The highest value will be the power transformer
 

2. The conductivity of the material, its size and its length will reduce the SCA down the line from the
transformer. The correct size over current protection device can be chosen when the system’s SCA is
known. SCAs are measured in amperes.
Fuses and circuit breakers are assigned an amperage interrupting capacity, or AIC, which indicate the SCA
that be can sustained before tripping. Unless otherwise designated, fuses are rated 10,000 AIC and circuit
breakers are rated 5,000 AIC.
Protection devices are rated to manage both the normal maximum load and the potential short circuit
amperage at any given part of the system.

3. Email * Website
Your email address will not be published. Required fields are marked *
Comment
Name *
POST COMMENT
Equipment controls should have a short circuit rating that enables them to absorb current while the
protective device clear the circuit. If the rating of the controller is lower, a fast-clearing fuse with a lower
rating than the controller should be used
Tags: Rating protection devices
Previous Post
What is short circuit protective devices
Next Post
What is reactive power& also explain in detail.
Leave a Reply
Save my name, email, and website in this browser for the next time I comment.
Trending Comments Latest
What is the Operation of Ajax Wyatt Furnace.
 AUGUST 6, 2020

4. Working Vapour Absorption Refrigeration System
 JUNE 25, 2020
What is Plasma Arc Welding
 AUGUST 7, 2020
Recent News
Follow Us
    
What is the strength of concrete.
 JULY 17, 2020
What is Placing concrete
 JULY 17, 2020
What is Transportation & methods adopted for transportation
 JULY 17, 2020
What is the gain of strength of concrete
 JULY 17, 2020

5. Notice: ob_end_flush(): failed to send buffer of zlib output compression (0) in /home/zillionsbuyer/public_html/blog/wp-
includes/functions.php on line 4673
/
/ / / / /
/ / / /
/ /
© 2020 JNews - Premium WordPress news & magazine theme by Jegtheme.
Browse by Category
Civil
Electrical
Industry
Manufacturing
Mechanical
Uncategorized
Recent News
What is the gain of strength of concrete
 JULY 17, 2020
What is the strength of concrete.
 JULY 17, 2020
“Gravity die casting has no future due to emergence of pressure die casting” it’s true?
Can the ferrous metals be cast by die casting method If yes, then how? Home 1 Home 2 Home 3 Home 4
Home 5 Home 6 Sample Page The Principle of Operation of Diesel Engine.
What Are The Different Characteristics Of Powder In Welding What is Flow Control Strategies
Why is aluminum preferred to be done by cold chamber die casting than hot chamber die casting?