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In a previous post we recommended you have a look at the “Promote Continuity of Service Through Selectivity”.
This time I bring you a new course where we’ll see the different circuit breakers coordination principles and benefits.
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 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.
By principle, cascading is in contradiction with selectivity. But can you get the cost benefits of cascading, plus the continuity advantages of selectivity?
Check it out in the following eLearning about Power Availability (duration 20 mins):
“Ensure Continuity of Service and Optimize Cost”
Registration and access is FREE and the content is in English.
At the end of the module, you will be able to explain:
- How can investment costs be optimized thanks to cascading?
- How can continuity of service be optimized thanks to discrimination?
- How can cost optimization and continuity of service be combined thanks to discrimination enhanced by cascading?
- We’ll also see how continuity of service can be enhanced thanks to discrimination between residual current devices.
To learn more about circuit breaker coordination, we recommend you read this blog post by Mathieu Guillot, use EcoStruxure Power Design software to optimize your network design, calculate and size up your electrical installation components. Alternatively, you can use the Electrical Calculations Tool, or download our Selectivity, Cascading, and Coordination Guide.
Do not hesitate to share your experience and your feedbacks about this training.
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