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Old 04-01-2018, 01:05   #31
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Re: Electrical

sorry, have to revise my post above, the Victron Quattro operates according to the user manual between 187-265VAC and not at 110VAC.
The input frequency is between 45 – 65Hz So it is not configurable off the shelf to 100V.
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Old 04-01-2018, 04:32   #32
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Re: Electrical

Quote:
Originally Posted by valhalla360 View Post
Where will you use the boat and for how long?

If it's moving permanently back to the USA, it will either cost you convert or be a hassle because you will have to special order 220v-50hz equipment.

If you will be traveling the world, you will have to deal with the hassle no matter what you buy, so it really doesn't matter (220v-50hz is more common so could actually be a benefit).

A good fairly straight forward method is to set the boat up as follows:
- Large battery charger that functions on 110 or 220.
- Large inverter that matches your boat system.

The inverter powers the AC loads and the battery charger keeps the batteries up. Eliminates issues with frequency and voltage regardless of the power source. Since the batteries are largely just a pass thru, they don't experience significant wear and tear but can allow the charger to be sized for continuous not peak loads. The inverter needs to be sized for peak loads (such as starting the air/con).

Exactly.

If we have-
a 'Universal' 90-250 VAC 45-65Hz input voltage battery charger.
Any Generator or other battery charging sources, Solar, Alternator etc also only charging our battery bank.
Then our Battery bank powering our Inverter (or a number in parallel) running all our AC loads.

The advantages are many.
All original AC wiring and appliances remain.
As stated previously the Batt charger only needs to be sized for average load, not momentary peak.
The battery bank will even out any peak loads.
Shore and Generator is often 'dirty' sometimes varying surprisingly markedly in voltage and frequency. Good Inverters have a good clean output, so better for sensitive devices and appliances.
Good inverters also have a good 'surge' capacity for Aircond start ups etc. If you add soft starts this is even better.
Victron PowerAssist, makes this even better when shore or generator is on.
This is basically a big UPS, so if your shore power suddenly goes out you boat power doesn't.
So saving on rewiring and appliances. Spend a bit for a Universal voltage charger. The money you save on not rewiring and appliances invest on good a inverter/s.

Just a suggestion.
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Old 04-01-2018, 04:59   #33
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Re: Electrical

The one catch with my suggestion is to incorporate some sort of low battery cut off. If the shore power goes out, you may not realize it until the batteries are completely discharged which can damage them or leave you unable to start the motor.
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Old 04-01-2018, 05:16   #34
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Re: Electrical

Agreed about low voltage battery cut off. But this can happen in any system.

Any little 'stray' or forgotten about current drain will eventually drop your batt voltage to damaging levels. But as you say particularly fast in a big Inverter set up.

I think a low voltage batt disconnect should be apart of all Battery bank systems.

This is a LFP bank requirement, but in fact should be 'standard in all batt banks.

Forgot to mention also in my previous post, that not only as you mentioned the Batt charger can be sized smaller for average loads. This also applies to Generator sizing, when a gen is installed. Ie the Gen can be also sized smaller for average loads not having to be sized for max/ peak loads.
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Old 08-01-2018, 05:07   #35
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Re: Electrical

Was on a L63 power cat recently and it was a DC powered boat. Shore power to charger to batteries to inverters for all AC loads. DC genetator to batteries with auto start if battery voltage low. Some solar as well. Universal system would work anywhere.
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Old 08-01-2018, 05:39   #36
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Re: Electrical

Think you guys scared the OP away
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