Electrical mystery on my new-to-me 2007 Lagoon 380 S2

[Hoofsmit]

Something like this ? That will allow multi frequency input

[svlamorocha]

Originally Posted by Hoofsmit

Something like this ? That will allow multi frequency input
Attachment 143095

I have seen a couple of those in American boats "adapted" for the Pacific and beyond " with a take it to 12V DC then invert back to home-country voltage and frequency" approach. The important thing is the "multivoltage" input. There arent that many multivoltage chargers out there. Frequency is less of a problem with chargers.

The problem with this charger when used as in a "take it to 12V DC then invert back to home-country voltage and frequency" setup is that they are limited to 30A or 50A in the DC side, hence they are unable to keep up with most air conditioner loads (both in Ah sense and startup current sense). Another story is if you have lots of solar and lithium batteries!

[svlamorocha]

Originally Posted by belizesailor

Now what matters is whats down stream...my guess is its either all 120 or there is a transformer in there somewhere.

Good question!

[svlamorocha]

Originally Posted by BrettB

As we plan to be cruising for a few years and "80% of shore power is 220 to 240-volt", I would like to get my boat back to European spec, but we do plan to be mostly on the hook.

Then I am trying to figure out how European boats at least charge their batteries when in places such as the US.

You did not show us a photo of the plate your battery charger and genset.....

Many Euro boats have multivoltage (on the AC input side) 40A or 60A standalone chargers (not combo inverter-chargers) such as the Victron Phoenix or Xantrex Truecharge that will take 110V to 240V AC inputs with 50 to 60 Hz frequency. Typically they will wire the AC input to the charger to a separate shorepower cord (not the one that comes with the boat) that will be their "works anywhere" way to connect ashore without exposing AC appliances to the "local" voltage and frequency.

As I said above, the issue with this setup is the 40A or 60A charger may not be capable of feeding the inverter with the aircon or water heaters running. You can work around that by "parallel stacking" two 60-amp Xantrex Truecharge 2. See gory detail below:

Truecharge Battery Charger | Truecharge2 20A, 40A, 60A | Xantrex

Then you need to worry about getting an inverter that will run your aircon or water heaters.. For a Euro boat it is difficult to beat the Victron Multiplus 12/5000/200-100 230V inverter-charger, that has a 5000VA inverter and also has charger that can be hardwired to the onboard genset. Batteries also matter...

[BrettB]

svlamorocha, thanks for pushing for the charger plate. Anytime I looked up the TrueCharge 40, I only ever saw the 120V version.... Lesson learned, always look for the plate!

It is indeed 200-250V:



So the only thing that doesn't make sense is the 125V/30A shore power inlet.

We don't have a genset, beyond the Honda EU20i that came with the boat.

Last week I actually ordered a Victron Energy MultiPlus 12/3000/120-16 - 230V VE.Bus Inverter/Charger and 3x300Ah ReLion 12V lithium batteries. We have 1080W of solar being installed when we get over to Florida.

[svlamorocha]

Originally Posted by BrettB

Last week I actually ordered a Victron Energy MultiPlus 12/3000/120-16 - 230V VE.Bus Inverter/Charger and 3x300Ah ReLion 12V lithium batteries.

The AC side of that Multiplus is fixed at 120 volts and will not let you run on 240 volts onboard the boat as you saidbylu wanted. You can get a 240 version of the Muktiplus if you ask nicely.


I do like the combination of having a 240-volt Multiplus between the batteries and the onboard AC wiring, and a 120V-fed charger to connect ashore in 120V-land.

If I was you I would look at the plates of both genset and aircon units before you lose the option to exchange the Multiplus for a Euro version.

[svlamorocha]

If you want to stick to the 120V Multiplus to run 120V onboard all the time (and use the 240V Truecharge) to charge from Euro shorepower and the (presumably) 240V genset then you will need to convert (and check wiring of) the aircons and water heater elements im addition to replacing outlets If you post photos of the plates we can take it from there.

[BrettB]

Originally Posted by svlamorocha

The AC side of that Multiplus is fixed at 120 volts and will not let you run on 240 volts onboard the boat

Am I missing something? I believe I ordered the European version, datasheet here:
https://www.victronenergy.com/upload...VA-5kVA-EN.pdf

Saloon Aircon Plate:


Waterheater Plate:


Will need to get the other aircon plate in the AM, since the wife is already asleep.

[svlamorocha]

Originally Posted by BrettB

Am I missing something? I believe I ordered the European version, datasheet here:
https://www.victronenergy.com/upload...VA-5kVA-EN.pdf

Saloon Aircon Plate:


Waterheater Plate:


Will need to get the other aircon plate in the AM, since the wife is already asleep.

You said you had purchased a "12/3000/120/16" Multiplus
12 is the DC voltage
3000 is the VA rating of inverter
120A is the A rating of charger
16 should be the frequency of the inverter; I believe you meant to write "60".

That is not a Euro version

[svlamorocha]

Originally Posted by svlamorocha

You said you had purchased a "12/3000/120/16" Multiplus
12 is the DC voltage
3000 is the VA rating of inverter
120A is the A rating of charger
16 should be the frequency of the inverter; I believe you meant to write "60".

That is not a Euro version

Ignore my message quoted above. 16 is the A rating of the transfer switch.

[boatbod]

A transformer would help here, but it's not going to resolve the lack of 60hz rating on the a/c compressor. Looks like an expensive problem to me.