SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Looking for a 12V DC under voltage relay
 Not a Member? 


Thread: Looking for a 12V DC under voltage relay Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
06-25-2008 02:45 PM
negrini US27, you might want connet/disconnect mannualy, regardless the treshold set, specially if conveniently mounted.
06-25-2008 02:29 PM
US27inKS The battery brain is a pretty cool looking item. A couple questions though. It says that it will disconnect the battery if the voltage drops too low, but will it reconnect when voltage is restored? What the heck do you need a remote for?
06-25-2008 12:12 AM
negrini Stuart, look at your previous thread. Your system is poorly designed, and this is just one piece of your problem. Go back and review your entire energy balance .... just like others say.
06-24-2008 10:08 PM
sailingdog Great minds think alike...posted a link to that same beastie in his other thread.
Quote:
Originally Posted by artbyjody View Post
Adding something like this (click)




May be what you are looking for...Instead of mounting it directly to the battery add it inline to DC power of your fridge...You can find a cheaper version at Autozone, and other auto supply places...
06-24-2008 09:51 PM
artbyjody Adding something like this (click)




May be what you are looking for...Instead of mounting it directly to the battery add it inline to DC power of your fridge...You can find a cheaper version at Autozone, and other auto supply places...
06-24-2008 08:03 PM
US27inKS I don't know about an undervoltage relay, but I think something could be made pretty easily.

If you run the frige on the load side of a relay, with the control side run in series with a zener diode, I think you can get that to work.

A zener diode blocks current flow until the voltage goes over whatever the rating on the diode is. If you can find a zener rated at 11.5 volts, and that will flow enough current to operate the relay, you should be in good shape. I don't know if you can get anything that will go off at 11.85 and back on at 13 without finding someone to design a circuit specifically for that purpose.
06-24-2008 07:33 PM
stuartbell
Looking for a 12V DC under voltage relay

I just installed a new Norcold refrigerator on my Gemini - powered by 195 watts of solar, a Blue Sky 200E (see other post for problems), and 200 Ah of AGM batteries.

After several unattended days of clowds, the voltage in the battery bank dropped below that required to run the Norcold. I expected the unit to turn off - but it didn't - the draw continued with no cold produced until the battery went to zero volts.

I'm looking for an undervoltage protection relay that will pull in at about 13 volts and drop out at 11.85.

Any idea where I can find one? Thanks /Stuy

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 04:34 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.