OP
Engineer54
Observations on your last post...
1/. You don't seem to be 100% sure of your actual power requirement to size these generators at the moment. How have you calculated or reached a value of 2500A?? (I can run a fully air conditioned smallish hospital on that type of requirement...lol!!!) Have you clamped to check your actual current draw?? Even if you don't have an amp clamp capable of reading the the possible full current, you can sub-divide and add the readings to give you a clearer picture... What are the present generators showing on the integral amp meter(s)??
2/. When you say, will be just ticking over with a few staff needs, what do you mean by this?? You cannot have say a 800 KVA or larger generator ticking over providing a minuscule load for 11 months of the year, so you will need to supply a suitably rated twin gen-set (you will need to cycle between two gen-sets to cover maintenance/duty restrictions/ breakdowns etc etc) which will cater purely for these few staff needs. Will the two buildings still require large power requirement for the remainder of the year?? If not, but still require some power but at much lower levels, then you are definitely going to need load banks. That, or increase the size of the Staff's twin gen-set, to also run these two buildings during the 11 months tick over period.
3/. Not sure what you mean by 220V/50Hz is that 3 phase voltage or single phase voltage?? Surely you wouldn't need 2 phases (first post) unless this is a Yankee set-up, with a 3 wire single phase transformer supplying 115/120V-220V to the staff area...
Perhaps it would be helpful to let us know what sort of installation this is?? Seems awfully strange that whatever it is, only runs for 30 days out of a year??
Tony is a retired industrial Engineer, and ''IS'' his user name. But he won't be able to help any more than i can, without a lot more information from you....
1/. You don't seem to be 100% sure of your actual power requirement to size these generators at the moment. How have you calculated or reached a value of 2500A?? (I can run a fully air conditioned smallish hospital on that type of requirement...lol!!!) Have you clamped to check your actual current draw?? Even if you don't have an amp clamp capable of reading the the possible full current, you can sub-divide and add the readings to give you a clearer picture... What are the present generators showing on the integral amp meter(s)??
2/. When you say, will be just ticking over with a few staff needs, what do you mean by this?? You cannot have say a 800 KVA or larger generator ticking over providing a minuscule load for 11 months of the year, so you will need to supply a suitably rated twin gen-set (you will need to cycle between two gen-sets to cover maintenance/duty restrictions/ breakdowns etc etc) which will cater purely for these few staff needs. Will the two buildings still require large power requirement for the remainder of the year?? If not, but still require some power but at much lower levels, then you are definitely going to need load banks. That, or increase the size of the Staff's twin gen-set, to also run these two buildings during the 11 months tick over period.
3/. Not sure what you mean by 220V/50Hz is that 3 phase voltage or single phase voltage?? Surely you wouldn't need 2 phases (first post) unless this is a Yankee set-up, with a 3 wire single phase transformer supplying 115/120V-220V to the staff area...
Perhaps it would be helpful to let us know what sort of installation this is?? Seems awfully strange that whatever it is, only runs for 30 days out of a year??
Tony is a retired industrial Engineer, and ''IS'' his user name. But he won't be able to help any more than i can, without a lot more information from you....
