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Replacement fast acting fuses ATS48 for type 2 co-ordination

Industry Automation and Control Forum

This forum is addressing industrial automation design & engineering, operations, asset performance, cyber security and digital transformation for Plants & Machines.

Crewman Crewman

Replacement fast acting fuses ATS48 for type 2 co-ordination

Do we have a replacement for the discontinued fast acting fuses?

If no replacement, does it mean that we don't need the fuses for type 2 co-ordination?

1 Reply 1
Lieutenant Lieutenant

Re: Replacement fast acting fuses ATS48 for type 2 co-ordination

The type 2 coordination means it is not necessary to replace any internal component of internal Soft Starter in case of huge damage on motor side (meaning short circuit). In such a case of Short circuit, it is tolerated to check the line contactor (could be light welded but shall be open using a screwdriver) and the fast fuse will protect the internal power components of the Soft Starter (Thyristors).

You can see a table giving fast acting fuses necessary on ATS48 for type 2 coordinationCapture_fastactingfuses_ATS48.PNG.

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