DCO 8.1 - single phase ups and 2 pole 208 breakers

[DCIM_Support]

I have a project coming up and need to model a 8kva single phase UPS' and power path.  I know I need to use floor mount units, however when I tried to use a 2 pole 208 breaker on the PDU, it doesn't show up, only the single pole breaker does.  I did set the pdu output voltage to 208/60.

The only work around seems to be to use a 3ph UPS & PDU and only use 2 phases.

Does anyone else have any other suggestions? 

(CID:124528340)

[DCIM_Support]

Hi Andrew Trabert, thanks for posting.

Let's hope you find your answer here. 

Kind regards Ditte

(CID:125208495)

[DCIM_Support · Accepted solution]

In the genomes you can create a single pole breaker with the size of 2 (just copy the exiting 1P breaker) and use that, it will then look like (and occupy the same space as) a 2 pole breaker.

Since DCO does not consider the  pole count for single phase UPS's, this solution will work just similar to having an actual 2 pole breaker.

I would not recommend using a 3 phase UPS, because it is always going to result in having non-utilized capacity on the power phase not used, which means the capacity calculations are going to be wrong.

The only case where using a single phase UPS would not work, is if the actual UPS is a split-phase-UPS, e.g. it has 2 phases + neutral as output, because it would then both have 120V and 208V outputs which you cannot do with a single phase UPS in DCO.

Regards

Gert

(CID:125212114)

[DCIM_Support]

Thank you!  That solution will work since these are not split phase ups', and as far as I know, they do not have a step down transformer (however I guess that could be modeled as a separate pdu).

Is it currently on the roadmap/or is there an enhancement request to add 120/208 output from a single phase UPS'? 

(CID:125212323)

[DCIM_Support]

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