Subscribing is a smart move!
You can subscribe to this board after you log in or create your free account.
Find economical solution for the network
Power Distribution and Digital Support
Join experts & peers to learn, share and engage about the key trends of electrical distribution around safety, availability, efficiency and connectivity, as well as power standards & regulations. From design to implementation and operation, let’s discuss how digital and software are transforming your business and your day-to-day work.
Invite a Co-worker
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
Send Invite Cancel
Solved
Go to Solution
Link copied. Please paste this link to share this article on your social media post.
Accepted Solutions
Link copied. Please paste this link to share this article on your social media post.
Thanks for your query on this subject of “finding an economical solution”
Introduction :
This can be achieved during the ‘electrical network design’ with the help of the ‘selection of protection devices’ by considering the coordination called ‘Cascading.’
This is specific property between the “Schneider Electric” protection devices. This is lab tested and tabulated.
Principle :
Cascading between two circuit breakers is achieved by using the tripping of the upstream circuit breaker (A) to help the downstream (load side) circuit breaker (B) to break the current. This allows the selection of downstream devices with lower breaking capacities, and therefore lower cost.
In other words, the upstream circuit breaker helps downstream devices break short circuit currents that are greater than the highest short circuit currents that they can break.
This can be explained from the following example(s);
Example 01:
In the following example The network design “without cascading” leads to the selection of “circuit breakers with high breaking capacities.”
Example 2 :
Whereas in the following example;
The network design “with cascading” leads to the selection of “circuit breakers with less breaking capacities at the feeder level.”
This is how the cost of the project is saved by considering the ‘Cascading property between the circuit breakers’.
* Icu = The ultimate short circuit ‘breaking capacity’ of the ‘circuit breaker.’
* Icu reinforced = The enhanced ‘breaking capacity’ received due to the ‘cascading effect’ of the upstream circuit breaker.
Link copied. Please paste this link to share this article on your social media post.
Thanks for your query on this subject of “finding an economical solution”
Introduction :
This can be achieved during the ‘electrical network design’ with the help of the ‘selection of protection devices’ by considering the coordination called ‘Cascading.’
This is specific property between the “Schneider Electric” protection devices. This is lab tested and tabulated.
Principle :
Cascading between two circuit breakers is achieved by using the tripping of the upstream circuit breaker (A) to help the downstream (load side) circuit breaker (B) to break the current. This allows the selection of downstream devices with lower breaking capacities, and therefore lower cost.
In other words, the upstream circuit breaker helps downstream devices break short circuit currents that are greater than the highest short circuit currents that they can break.
This can be explained from the following example(s);
Example 01:
In the following example The network design “without cascading” leads to the selection of “circuit breakers with high breaking capacities.”
Example 2 :
Whereas in the following example;
The network design “with cascading” leads to the selection of “circuit breakers with less breaking capacities at the feeder level.”
This is how the cost of the project is saved by considering the ‘Cascading property between the circuit breakers’.
* Icu = The ultimate short circuit ‘breaking capacity’ of the ‘circuit breaker.’
* Icu reinforced = The enhanced ‘breaking capacity’ received due to the ‘cascading effect’ of the upstream circuit breaker.
Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.