sizing up mcb and a contactor

[pc1966]

So that’s all that is needed?
Because I was going to install 6 of these servo drives in an electrical
Cabinet.

So you advise just to keep it simple and leave it with fuses.

I was dreaming of a very pretty electrical layout within a electrical enclosure so you advise that it is best just to put some 6 way gang sockets and just plug em
In simple… hmmmm

If they are plug & socket they have to be RCD protected and with that many drives you are likely to have issues of accumulated leackage causing false trips if it is a single supply.

Also if you have 6 drives each of 10A and any real possibility of them simultaneously running at rating then you need a 60A supply in total, that is going to require 2 * 32A feeds for the lot, even if they are each on 13A fuses at the end.

To avoid the plug & socket and thus RCD requirement you could hard-wire them in to FCUs instead, so say two 32A radial so 4mm cable (if clipped direct and not in hot zone or thermal insulation) each supplying 3 drives via 3 FCUs would be an option.

If they have to be removable thus plug & socket you would need to investigate the leakage, as you might have to put in 3 * 25A RCBO feeds or similar with each doing 2 * 13A socket, etc.

 

[James]

1 drive, as you said comes fitted with a plug, easy.

6 drives in an enclosure needs a proper design process and is out of the realms of a little diy advice.

 

[Rockingit]

Hard wire individual circuits back to DIN fuse carriers?

 

[pc1966]

Hard wire individual circuits back to DIN fuse carriers?

Yes, that is an option to have a DIN box of them and then a 63A feed from the main panel. Finding a suitable bus-bar might be harder if so many on single big supply.

Might be just as easy to have a local CU of 6 * 16A MCBs!

 

[damunk]

im stucknow,

so 6 mcb's with magnetic contactoras suggested in manual drawing for 3 phase althought imusing singephase 240v (theres no drawing for that)

or 6 din fuse rail way.

and using 6 bus bars (3+3); 2 for live 2 for neutral and 2 for earth. and using two seperate 40A feeds from main power box.

sounds good yeah?