3 phase connector advice

[bal]

Hi,

I'm a technicain in a factory tasked with the following. I am currently looking into consolidating our electricity feed. We have several 600 amp fused isolators which are under utilized ie we have small feeds coming off these.

To this end I am thinking of implementing the following. Use a single 600amp isolator to feed a 600 amp busbar. This would then be used to feed to 3 x 200 amp fused isolators thereby emptying several under utilised 600 amp isolators for other applications.

Firstly is this the best way of splitting a 600amp feed??

Secondly as the above will involved some recabling work I think that some of the armoured cables may be short and its not passible to replace the whole length of cable. What is the best safest way of extending them. The all are housed indoors.

Any thoughts would be appreciated.

regards

 

[glynnis]

I think using a bus-bar chamber is generally deemed to be old fashioned and not the safest means of isolation.
we would use a panel board arangemet, either using mccb's or switchfuses for the outgoing supplies, but not cheap!
as for the cables you can use a scotchcast type jointing kit.

 

[bal]

Glynnis,

Thanks for the info.

I didnt think 600 amp incoming distribution boards were readily available, I would this would also require 200 amp MCCB's - I'll look into this.

regards

 

[glynnis]

Check out this info from merlin gerin it might help/View attachment section2.pdf
There are more cost effective options on the market but merlin easy to got hold of anywhere. Speak to suppliers and they should advise or send in salesman for quote etc

 

[Knobhead]

I'd just fit a 200A 4 way Red Spot board.
Cheapest option.
Or a MiniForm board with 600A incomer and up to 5 200A out going