[Electric Boats] Re: 48v diesel telecommunications standby gen?

 

By insulating the bolts holding the mounting brackets, the series could be achieved.

But I think, just a gut feeling I have, that there might be another snag caused by any discrepancies in the power output that might cause the load to be focussed on the weakest alternator?

This assumes you are stringing them in a simple series, as opposed to dedicating each one to an individual battery.

If using regular alternators, with brushes, they might have to be marine grade to shield the sparks, if possible Coastguard inspections are to be complied with.

Another snag is that you end up with at least 3 of them having cases that are 'live' at all times.

So, it is a good idea, but caution is the right word, it needs thinking/costing right through before shelling out the green folding paper.

 

John

 

 

 

2.1. Re: 48v diesel telecommunications standby gen?
    Posted by: "Mark n Angela" mstafford@natca.net markscottstafford
    Date: Sun Sep 16, 2012 10:27 am ((PDT))

Bob, caution with the 4 alternator idea.  It would be rare to find "isolated" alternators that could be wired in series to get to 48 volts.  Most alternators are "non-isolated", where the negative terminal is the case/ground.  48v alternators, particularly the Permanent Magnet Alternators, seem the happiest route.
Mark Stafford

 

 

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