To me, a transformer is just a transformer. Would there be any difference in electrical and physical specs in one where the application is say, on a water turbine rather than solar?Can anyone recommend a company that sells solar transformers ?
I am looking for a step down in the 115-125Kva range from 277/480v wye to 120/240v delta
No, there isn't. Although possibly a distributor that caters to solar projects might have some product selection that would be harder to find at those that don't.No you have me thinking - is there a difference between a solar and "Regular" transformer ?
I'll just add that it behooves you to have a conversation with the transformer manufacturer's tech support and tell them exactly what you want to do. While the primary/secondary terminology jben describes is prevalent it isn't universal, and the tranny has to be rated to handle the current from the inverter(s) as 100% continuous.No, there isn't. Although possibly a distributor that caters to solar projects might have some product selection that would be harder to find at those that don't.
BTW if your solar is the 480/277 wye and your service is the 240/120 delta then you are probably looking for a delta-to-wye 'step up' transformer. The 'primary' of the transformer you buy is the side that is intended to be connected to the utility, regardless of whether the 'secondary' is connected to a load or a source. If you want to use it 'backwards' then get approval from the manufacturer. Also the 240/120 delta is a high-leg and you are not going to connect the neutral to that side of the transformer.
No difference between solar and hydro in this particular scenario.To me, a transformer is just a transformer. Would there be any difference in electrical and physical specs in one where the application is say, on a water turbine rather than solar?
One almost wants to drop the terms 'primary' and 'secondary' and instead specify:Some transformers are designed to work best with current flow only in one direction. When we talk to transformer manufactures sometimes this causes PV people to get all flustered. Which side is the primary and which the secondary when current could go either direction? It gets complicated.