Load Calculations for 400v single phase floodlighting

Hi Folks

Could someone please advise if my calculations below are correct? I'm calculating total load on a 3 phase 400v system for a floodlighting load consisting of 36 No 400v single phase ("2-phase") Luminaires. I thought my calc's were correct then I read some other posts online which used 3 phase formula (as if the stated lighting load was 3 phase) which left me with enough doubt in my calc's to seek some expert advice from you guys...

Supply: 3ph/400V

Load: 36No Philips OPTIVISION MVP507 1xMHN-LA2000W/400V/842 WB/60, with a stated load of 2123 W each, equally divided across the 3 phases, (I have assumed a Pf of 0.9 for the ballasts).

I have treated these as single phase loads, therefore...

I total = (2123*36)/(400*0.9) = 212.3A; divided equally across 3 phases = 71 A (70.77) line current

Therefore, (Assuming I used the correct calculations above) total 3 phase power in KW = ((400*1.732*0.9*71)/1000) = 44.27 KW


Any confirmations or corrections would be greatly appreciated.


Thanks