[C320-list] Protecting The Batteries when away from boat at dock

[JeffWillis111 at aol.com]

Sounds like a great idea!  Especially for SW Fla.  Summer time  storms and 
lightening every afternoon often kills power.
 
Mainsheet article would be great.
 
 
In a message dated 7/22/2014 8:21:44 P.M. Eastern Daylight Time,  
wupdike at hotmail.com writes:

This is  good. A schematic would be better with the source and part nos. as 
well. This  is a usable idea.

Warren and Pattie Updike
1994 C320 "Warr de Mar"  #62

-----Original Message-----
From: Ken Geiger  [mailto:kendgb at aol.com] 
Sent: Monday, July 21, 2014 7:00 PM
To:  C320-List at Catalina320.com
Subject: Re: [C320-list] Protecting The Batteries  when away from boat at 
dock

I have this project complete and  working.

I sourced a solid state relay from Newark Electronic Supply,  bent up a 
strip of aluminium to mount the relay on as a heat sink, screwed it  between 
the green and white terminal AC blocks allowing panel door clearance,  fed the 
AC "coil" of the relay from the "outlets" breaker switched side and  the 
white terminal block and a green ground to the Alu heat sink.    

The  12v switched terminals of the relay were fed from the 12V  red buss at 
the switch panel thru a 15A fuse block and led to the switched  side of the 
refrigerator ON/OFF switch.

When leaving the boat the AC  Main is ON and the "Outlets'" switch is ON 
thus energizing the Relay's "coil"  and closing the relay's 12V switch.  The 
refrigerator switch is OFF and  the 12V main switch is ON. The refrigerator 
is energized.

This way if  the 110V supply is interrupted the Refrigerator will be turned 
of when the  relay "coil" drops out and opens this alternate 12V supply to 
the  Fridge.  Remember the Fridge switch is off.


More details and  pictures are  available


Regards

Ken






----  Original Message ----
From: Chris Burti <clburti at gmail.com>
To:  Arthur Miller <millers1 at aol.com>; C320-List at Catalina320.com  
<C320-List at catalina320.com>
Sent: Fri, Jul 4, 2014 4:49  pm
Subject: Re: [C320-list] Protecting The Batteries when away from boat at  
dock


I can't speak to the technical aspects, but can offer some  personal
experience. On at least two occasions in the last 11 years some  $&%$
has disconnected our shore power cord and it didn't toast the  batteries
or the compressor. It may have contributed to only getting seven  years
out of the original pair, but I place the blame for that on the  OEM
charger and the lightning that blessedly took it out.

Thanks,  Chris BurtiFrom: Arthur Miller
Sent: ‎7/‎4/‎2014 4:19 PM
To:  C320-List at Catalina320.com
Cc: <C320-List at Catalina320.com>
Subject:  Re: [C320-list] Protecting The Batteries when away from boat
at dock
As  I recall my AB shuts down if voltage drops below 12.1v.
Also isn't a  battery pretty much Fully discharged At approx. 11.9.
Art.  #  680

Sent from my iPad

On Jul 4, 2014, at 4:02 PM, "Jeff Hare"  <catalina at thehares.com> wrote:

> :)  10.4v is a dead  battery.  :)  Cutout should be a volt above that at
>  least.
>
> -Jeff
>
> -----Original  Message-----
> From: C320-list  [mailto:c320-list-bounces at lists.catalina320.com] On 
Behalf
> Of Warren  Updike
> Sent: Friday, July 4, 2014 3:34 PM
> To:  C320-List at Catalina320.com
> Subject: Re: [C320-list] Protecting The  Batteries when away from boat at
> dock
>
> Cutting out at  10.4V isn't necessarily saving the battery especially if 
the
> battery  sits discharged for days. The longer a battery remains in a fully
>  discharged state the more damage is done.
>
> -----Original  Message-----
> From: guyhenry222 at gmail.com  [mailto:guyhenry222 at gmail.com]
> Sent: Friday, July 04, 2014 12:25  PM
> To: c320-list at catalina320.com
> Subject: Re: [C320-list]  Protecting The Batteries when away from boat at
> dock
>
>  The Adler/Barbour fridge on my 1994 automatically cuts out if the  
voltage
> goes under 10.4V
>
> Guy
>  MoonShadow
> #115
>
>
> -----Original  Message-----
> From: Ken Geiger
> Sent: Thursday, July 03, 2014  4:55 PM
> To: c320-list at catalina320.com
> Subject: [C320-list]  Protecting The Batteries when away from boat at dock
>
> In the  Flooded Battery Thread, Warren mentioned a devise to sense low
> battery  and then disconnect the load (the reefer).
>  I  quote;
>
> "For those who leave refer running while away from  boat, there is a 
device
> that will sense State of Charge and disconnect  a load (refer.) This 
avoids
> running a good battery into the ground  (below 11 V) should shore power be
> lost (a sure way to shorten your  battery's life.) Jeff Hare can say more
> about this  device."
>
> I wonder if one could protect the batteries while  leaving the reefer on 
when
>
> at dock and away, by paralleling in  a
> 110 V relay coil with the parallel 12 V to the reefer on a set of  
contacts.
> The coil would drop out and open the
> power supply to  the reefer upon AC power loss thus prevent draining the
>  battery.
>
> The Reefer switch on the panel would be in the off  position and the 
battery
> main switch on, supplying the parallel 12 V  circuit to the reefer through
> the relay contacts.
>
> Ken  Geiger
> Northern Dream, 2000  #765
>
>
>
>