Unknown "box" in engine room: What is a Lamsa 15kVA box for the main shorepower? No documentation on board....
Yeah, probably some sort of isolation transformer. Hard to tell without seeing how it's wired into the system
Based on the label it looks like you can input 115v and get 230v out. I’m a little confused by the ENT 115-230though. This would imply you can input anywhere from 115 to 230 and then get 230 out. I’m not familiar with this much variability in allowable input so I may not be understanding the label correctly.
Euro 230v is one hot at 230... it’s not like the US 240 where you have two 120v hots on opposing phase. a transformer can take 115v and output 230v.
If it isn't, its plate certainly reminds of one. I'm a bit intrigued by the two large-ish black hoses that look like meant for water, though. Are there electrical cables inside them possibly, and they are used only as additional protection? I never came across a liquid cooled isolation transformer.
Off topic, but a few years ago ASEA was developing liquid cooled shore power converters to eliminate the high heat out put, and also allow the units to be installed in a high ambient area. Another well known mega yacht builder I worked with had to install large A/C air handlers in their shore power converter install area, which lead to a significant increase in A/C chiller size. Gotta dissipate all that heat somewhere.
In my opinion, it is an ASEA unit relabelled by the Spanish importer. But I am not on board at the moment to check.
Well, every day is a school day, as they say. Rated for much more than 15kVA, I suppose? And does that imply running the chiller regardless of needing airco? I appreciate that this doesn't make any difference in places where you would need airco regardless, of course.
That begs the question: How do you cool the ASEA units when you are using the chiller loop to HEAT the boat in the winter? Most air handlers require the loop to be above 105 degrees for the klixons to become active and normal loop temp is in the 110-115 range. Or have they configured the heat output from the ASEA's into the heating loop cycle, and they will tolerate the 115 degree operating temp?? I ask because I recently did 3 winters docked in northern Italy and heating was extremely important. And yes, I did have conventionally cooled ASEA units in the engine room and kept temps mostly acceptable with all fire dampers closed limiting the ingress of cold air. We also had a large 3 phase immersion heater in the loop for general boat heating. I was also able to isolate sections of the boat not being used, like the entire guest area and forward lounge etc.
We haven't had to consider it, as all our air handlers have heat strips. We've spent the last two September/October (early) in Maine, and needed heat then. But otherwise, we're always looking for cooling.