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Old 29-12-2018, 03:10   #16
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Re: 50hz appliances used on US 60hz shore power

Just a few words about AC frequencies and transformers; 50Hz transformer require more iron core than 60Hz. So if using 50Hz AC on equipment designed for 60Hz with internal transformers to step down (or up) the voltage, make sure they are suitable for 50Hz - as mostly they are not (in order to save a few pennies). They other way around, using 60Hz on 50Hz is always OK - and as mentioned by others; 50Hz equipment mainly runs on 230VAC and 60Hz on 115VAC
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Old 29-12-2018, 05:06   #17
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Re: 50hz appliances used on US 60hz shore power

Quote:
Originally Posted by Scrudman View Post
The inverter will supply 50 hz (assuming 50 hz unit) when inverting and 60 hz (assuming conn to 60 hz shore power) when feeding through. It is likely that your microwave will operate properly on either frequency provided the voltage is correct.


This is the KISS answer
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Old 29-12-2018, 08:27   #18
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Re: 50hz appliances used on US 60hz shore power

With few exceptions, inverters with builtin bypass switches “qualify” the incoming ac power and require that it be within spec before it will cut over the loads, and start charging if also a charger. The effect of this is that a 60hz inverter will simply ignore 50hz power, and a 50 Zhou inverter will ignore 60hz power. The inverter will just keep inverting.

Many people take advantage of this to maintain native power onboard, and use wide input battery charger to produce DC to power the inverter. It’s sort of a poor mans (or smart mans) Atlas or Asea power converter.
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Old 29-12-2018, 10:19   #19
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Re: 50hz appliances used on US 60hz shore power

Yes in my "big picture" post #2, I failed to explicitly specify,

no inverters do any pass-through.

Of course, the fact **there is no** AC distribution on the boat, that they would have access to on their input side, does imply that.

And it should perhaps also be mentioned that,

expensive / complex devices like combi charger/inverters have no more place in that KISS design, than do frequency converters.
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Old 29-12-2018, 10:41   #20
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Re: 50hz appliances used on US 60hz shore power

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Originally Posted by john61ct View Post

expensive / complex devices like combi charger/inverters have no more place in that KISS design, than do frequency converters.

To each his own.


I had one inverter/charger that I turned on 4 years ago and is still running.


I had another that ran non-stop for 10 years until turned off to upgrade.


And another that I turned on 11 years ago and hasn't been off since.


All cycle automatically between generator and/or shore power with zero disruption to AC power.
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Old 29-12-2018, 17:17   #21
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Re: 50hz appliances used on US 60hz shore power

I wouldn’t be without my inverter/ Charger.
First is a big dog charger, and secondly it’s stupid to crank the generator any time the Wife wants to use the toaster or blender or the vacuum/
Of course you can just do without a blender or toaster or a vacuum, but why?
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Old 31-12-2018, 09:33   #22
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Re: 50hz appliances used on US 60hz shore power

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Originally Posted by john61ct View Post
And it should perhaps also be mentioned that,

expensive / complex devices like combi charger/inverters have no more place in that KISS design, than do frequency converters.
That's nonsense.

Which inverters and chargers are you using on your system? Can you tell us more about it so that we can understand how you arrived at this conclusion?
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Old 02-01-2019, 01:58   #23
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Re: 50hz appliances used on US 60hz shore power

Perhaps you misunderstood.

> that KISS design

refers to
Quote:
Originally Posted by john61ct View Post
my "big picture" post #2
only.

I was not making any statements about other designs, including others that I use.

Just that one specific example mentioned, as one possibility out of the thousands of possible others

that each owner will use to match their use case and preferences.

In contrast to the OPs idea that there might be just One Way for all boats
Quote:
Originally Posted by mfortinberry View Post
Trying to understand the dynamic of how electricity is delivered to a boat's AC devices, when plugged into shore power.
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