Re: [Amel Yacht Owners] Re: FW: inverters/chargers


hanspeter baettig
 

To Eric, Kimberlite
Eric Your comments about Europen 220 System.
You are not correct and it was writen a Lot of confusing stuff about invertets, boundings , Yellow/green
In Europe we have of course 220 V 50 Hz
Brown , Blue and earth
The Blue is neutral otherwise we do not have 220 Volt. Neutral has nothing to do with neutral we call them Null Leiter (in German)
So, the Brown and the Blue are hot. Nothing to do with earth/g/y
In the US we put 2 110 v Lines to 220 v easy, but still 60 Hz
Hanspeter
SM/16 Tamango 2
Hanspeter Baettig
Dipl. El. Ing. ETS



Von meinem iPhone gesendet

Am 30.01.2015 um 16:26 schrieb "Kent Robertson karkauai@... [amelyachtowners]" <amelyachtowners@...>:

 

Hi again, everyone.
Another question about galvanic isolation.
I do not have an isolation transformer, but I do have a transformer for 110 shorepower that produces 220VAC. Both the direct 220 and the 220 from the transformer enter a junction box on the forward engine room bulkhead. There are two receptacles, one marked 110 to 220 transformer, the other marked 220 direct. I have to switch the plug from one to the other depending on whether I'm hooked up to 220 or 110 shorepower.

I want to add a galvanic isolator to my shore power connections. Do I have to have two of them (one for the 110 input and the other for the 220 input), or can I put a single unit in on the output which takes either to the boat systems? Or is there a unit that would accept both the 110 input and the 220 input where they enter the boat (I guess in the aft lazarette)? Can anyone suggest a specific unit that works for this application on your Amel?

Thanks in advance,
Kent

--------------------------------------------
On Fri, 1/30/15, kimberlite@... wrote:
Hi ,you use the word neutral in your comments about
your inverter charger.Here
in the usa there are 4 wires on a 220 volt circuit. 2 hot
leads each 110 volts (usually red and black) and a neutral
white.There is also a green
Ground ( earth)
European
wiring does not have a neutral just 220 volts between the
blue and brown wire and a yellow green earth.
The yellow green earth on the Ac circuit
should not be connected to the boat bonding. even though the
wires are the same color Yellow-Green.  Although
ABYC regulations say that the AC earth should be connected
together with the boats bonding- this is a bad
idea.The Ac circuits and
the DC circuits and bonding should be kept separate. In fact
there should also be a Galvanic isolator installed in the
AC earth (yellow green wire)Connecting the Ac earth and the bonding together
is an accident waiting to happen.Connecting the earth to the bonding will allow any
stray  electrical currents to  flow from the ac side
through the bonding.Where
is the isolation transformer installed in the circuit on
your boat and how is the earth wire
connected?Fair
windsEricsm376


Fair 
----- Original Message -----
From: "Andrew Lamb
andrew.lamb@... [amelyachtowners]"

Date: Friday, January
30, 2015 1:26 am
Subject: RE: [Amel Yacht
Owners] Re: FW: inverters/chargers
To: "amelyachtowners@..."


> Dear Gary
>
> This discussion is
very interesting and I am now a lot clearer
> about the DC circuits and the bonding, an
area I am unclear
> about however is the
Earth lead on the AC circuit and the
>
bonding system.
>
>
In our Amel the 100Amp mastervolt was replaced by a
Victron 
> Charger / inverter and an
Isolation transformer. As I recall,
>
the Earth in the boat AC system originates from the Neutral
on
> the boat side of the isolation
transformer. Logic would suggest
> to me
that the boat metal work should be connected to the boat
> AC earth so that the earth leakage circuit
breakers will work if
> an electrical
fault in an AC device rendered the casing of a
> device connected to boat AC Live. This
maybe particularly
> important as many
consumer devices do not have an earth wire -
> but is this consistent with your
statement? This would imply
> that in a
Charger / inverter that DC –ve should be independent
> but that AC Earth and Charge / inverter
casing should be
> connected to the boat
bonding?
>
>
Andrew
>
>
> Ronpische
> SM2k 472
> Canet en Roussillion, France
>
>
>
> From:
amelyachtowners@...
>
[mailto:amelyachtowners@...] On Behalf Of
amelliahona
> Sent: Thursday, January 29,
2015 10:35 PM
> To:
amelyachtowners@...
>
Subject: [Amel Yacht Owners] Re: FW: inverters/chargers
>
>
>
> Dear Mark:
>
> Regarding a
charger/inverter GROUND and GROUNDING (see my prior
> email if you are confused on these terms,
they are definitely
> different). As I
understand your question, I think you have it
> backwards. Since a charger/inverter
isn't in contact with sea
> water,
both the grounding and ground lines would go to the
> battery DC negative (-ve or -) terminal.
The AC output side
> should be connected
via circuit protection including GFCI
>
(ground fault circuit interrupter) and the DC charging
circuits
> go to batteries as per the
manufacturers directions. It is my
>
opinion that the BONDING circuit (Amel yellow & green
wires)
> should NOT be attached to the
inverter charger.
>
>
Download the installation manual for anything you are
> considering installing and make sure you
thoroughly understand
> it before
buying/installing.
>
> All the best,
>
> Gary Silver
> s/v
Liahona SM 335
>
>











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