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This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.

What are the different types of faults for NSX breakers and what are the maintenance inspections checks to be carried out after each type?

Depending on the type of fault, maintenance inspections must be carried out on all or part of the equipment where the fault occurred.

Minor faults:
 Tripped by long time protection
 Tripped by earth leakage protection

Following repairs, checks D, E and F must be carried out.

Serious or destructive faults:
 Tripped due to unknown electrical fault
 Tripped by short time protection
 Tripped by ground fault protection

Following repairs, checks A, B, D, E and F must be carried out

Please find attached the List of Checks and Inspections and their description.
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