Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-03-2019, 10:36 PM   #41
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 8,429
Update

I have been running the boat with an ACR between the house and thruster bank. However, Iíve had issues with voltage drops affecting the nav instruments when the thrusters are used.

So today and reconnected the Balmar Duo-Charge. Someone mentioned that the melted fuse holder could be related to simply a poor connection in the fuse holder. Certainly could be as the fuse has been there for almost a decade.

The other thing that I noticed before but never though about, was that the Duo-charge wasnít installed according to Balmarís instrucitons. So I ran a new 10AWG wire from the Duo-Charge to the battery. It is right about the 8í length that Balmar recommends. Anyway, Iíll keep and eye on it and see if it performs well (as it had for almost a decade before).
__________________
Advertisement

__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 08-04-2019, 01:17 AM   #42
Guru
 
City: Fairport, NY and Palm Coast, FL
Country: United States
Join Date: Jan 2017
Posts: 1,797
Yeah; its good to take a voltage reading every few years on the high current users, right at the load. This will show any deficits in connections and even the battery(s) themselves.
My garmin chartplotter is my early warning canary when too much house V drop occurs.
__________________

diver dave is offline   Reply With Quote
Old 08-04-2019, 12:10 PM   #43
Guru
 
JDCAVE's Avatar
 
City: Lions Bay, BC
Country: Canada
Vessel Name: Phoenix Hunter
Vessel Model: Kadey Krogen 42 (1985)
Join Date: Apr 2011
Posts: 2,278
Dave: have you checked the voltage drop at the thruster batteries with all charging sources off, including the ACR? If below 10 VDC, I suspect the batteries may be near end of life, particularly if the Duocharge worked previously.

In my situation, the issue Iím finding with the Duocharge is, the voltage drop between the Duocharge to the thruster bank is excessive, as the POs only used 10 gauge wire and the run is far too long. This is something I need to correct.

Jim
JDCAVE is offline   Reply With Quote
Old 08-04-2019, 12:32 PM   #44
Guru
 
Aquabelle's Avatar
 
City: sydney
Country: australia
Vessel Name: Aquabelle
Vessel Model: Ocean Alexander Flushdeck
Join Date: Jun 2012
Posts: 917
Quote:
Originally Posted by JDCAVE View Post
Dave: have you checked the voltage drop at the thruster batteries with all charging sources off, including the ACR? If below 10 VDC, I suspect the batteries may be near end of life, particularly if the Duocharge worked previously.

In my situation, the issue Iím finding with the Duocharge is, the voltage drop between the Duocharge to the thruster bank is excessive, as the POs only used 10 gauge wire and the run is far too long. This is something I need to correct.

Jim
If there is a fault with the thruster battery that could cause excessive current demand and the melting of the duocharge fuse.
Aquabelle is online now   Reply With Quote
Old 08-04-2019, 01:48 PM   #45
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 8,429
Quote:
Originally Posted by JDCAVE View Post
Dave: have you checked the voltage drop at the thruster batteries with all charging sources off, including the ACR? If below 10 VDC, I suspect the batteries may be near end of life, particularly if the Duocharge worked previously.

In my situation, the issue Iím finding with the Duocharge is, the voltage drop between the Duocharge to the thruster bank is excessive, as the POs only used 10 gauge wire and the run is far too long. This is something I need to correct.

Jim


After the batteries initially had been discharged very deeply (when I found out that they were no longer being charged), I connected them to the ACR and got them fully charged. I then disconnected the thruster batteries, used the thrusters a tiny bit, and let the batteries rest for over a day. The batteries still showed 12.7v. So I think the batteries themselves are OK.

Iím not as sanguine about all of the connections as I havenít had a chance to check them all yet. I will however.

I agree that the batteries are likely at the end of their life. I am unsure of their age, but they are likely at least 6 years old and could be as much as 8 years old. I have only abused them once, but it was bad as they ended up reading only about 10.5v if I recall. Still, I will see how they work with the Duo-Charge setup again.

As has been noted, Balmar wants the charger connected to the battery with a 10 gauge wire that is at least 8í long. I donít understand the reasons. Instead, this one was connects to a positive bus to the thruster bank so was connected with a 4/0 cable. When I reconnected it, I ran a 10 gauge wire connected directly to the battery. Not sure if that will make any difference. I will also use a 40amp fuse as CMS recommended instead of the 30amp.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 08-04-2019, 03:22 PM   #46
Guru
 
JDCAVE's Avatar
 
City: Lions Bay, BC
Country: Canada
Vessel Name: Phoenix Hunter
Vessel Model: Kadey Krogen 42 (1985)
Join Date: Apr 2011
Posts: 2,278
Actually, Dave, I meant ďWhat is the voltage at the batteries with the thruster engaged and all charging sources off?Ē If it drops below 10, it could be causing all of those problems with your nav instruments, if they too sense that low voltage. This test is one way to determine battery health in a relative sense. Do the test again when you have new batteries and you will probably find considerably higher voltages with the thruster engaged.
JDCAVE is offline   Reply With Quote
Old 08-04-2019, 03:59 PM   #47
Senior Member
 
Ka_sea_ta's Avatar
 
City: Puget Sound
Country: USA
Join Date: Jun 2016
Posts: 455
Dave if you are using an ACR there should be a terminal that will open the ACR contacts. That terminal just gets connected to the thruster solenoid coil so when the thruster is energized the ACR is open. This will prevent the voltage drop you are seeing on the electronics assuming that the electronics are on the house bank.
Ka_sea_ta is online now   Reply With Quote
Old 08-04-2019, 05:58 PM   #48
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 8,429
Quote:
Originally Posted by JDCAVE View Post
Actually, Dave, I meant ďWhat is the voltage at the batteries with the thruster engaged and all charging sources off?Ē If it drops below 10, it could be causing all of those problems with your nav instruments, if they too sense that low voltage. This test is one way to determine battery health in a relative sense. Do the test again when you have new batteries and you will probably find considerably higher voltages with the thruster engaged.

Ah, thanks. That makes so much sense!

Iíll try and do that test the next time Iím down at the boat with a helper.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 08-04-2019, 06:09 PM   #49
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 8,429
Quote:
Originally Posted by Ka_sea_ta View Post
Dave if you are using an ACR there should be a terminal that will open the ACR contacts. That terminal just gets connected to the thruster solenoid coil so when the thruster is energized the ACR is open. This will prevent the voltage drop you are seeing on the electronics assuming that the electronics are on the house bank.

I believe that it will provide a 3-5 minute lockout. Iíll have to look at my own setup. That wouldnít be long enough if I connected it to the solenoid that energizes the thrusters. However, Iíll have to look to see how my thrusters at controlled at the motor. I imagine there has to be a solenoid (or two) at each thruster.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 08-05-2019, 11:02 PM   #50
Senior Member
 
City: St. Petersburg
Country: USA
Join Date: Oct 2007
Posts: 106
If you go the Blue Sea ACR route, they provide an Engine Start tab that, when connected to the engine start switch or, in your case, the bow thruster switch, will disconnect the ACR immediately when voltage is sensed at the ES tab.
__________________

__________________
Charlie Johnson
CharlieJ is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 05:39 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×