How many 16 Amps per phase welding outlet can you install to a 30 KvA rating transformer?
..the questions does not say wether the 30kVA transformer is 3
phase transformer or single phase transformer..but it is implying
that a single phase welding load at 16A per phase is to be connect
to it, it is assumed then that the transformer is 3 phase
transformer..we assume load is rated 240V..
..though not much details is given about the transformer voltage
specs. but if is rated 3 phase 415/240V, the approx full load
current per phase is given by 30KVAx1.3912=41.736A..
..but if the transformer was rated single phase 240V say, the
approx full load current FLC=30000/240V gives 125ampers..
..if you further devide the FLC by the intended load
current..
..Recommended no of welders per for a 3 phase 415V transformer
and assuming single welding sets =41.736/16=2.6..so you can connect
max two welding sets to this transformer per phase,..max 6 weld
sets can connect at an approx load factor of 76%..
..for the single phase transformer, FLC/16=125/16, gives 7.8 but
is also recommended not to connect more than 6 welding sets to such
transformer for the same reasons..