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Parallel MCB with fuses to feed frequency drives

Nic
46764c050bc7511d6dcb732a28ff5099-huge-img_0667.jpg

Here you can see the frequency drive is connected to the feed via 50A fuses and in parallel with this is a 0.2A MCB. This then powers the frequency drive.

I think the 0.2A is for a pre stop to the drive and the status signal to the DCS. Could someone explain as I haven't seen this before.

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  • Former Community Member
    0 Former Community Member
    Hello,


    I would say to detect a blown fuse. If a fuse blows, the MCB will trip and that is monitored via aux contacts.


    Regards,


    Jon
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  • Former Community Member
    0 Former Community Member
    Hello,


    I would say to detect a blown fuse. If a fuse blows, the MCB will trip and that is monitored via aux contacts.


    Regards,


    Jon
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