Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-02-2019, 05:34 PM   #1
Senior Member
 
City: New Rochelle
Country: Bronxville
Vessel Model: Mainship Trawler
Join Date: Aug 2015
Posts: 106
network voltage

Have a Mainship trawler with a single Yanmar STP-3STP 440 hp engine.It has a Yanmar i5601e engine gage that shows all the engine information oil pressure,oil temperature, rpm, battery voltage,etc it also shows network voltage my voltage reads about 10.2 - 10.9. I don't have the engine heater hooked up to the engine so i'm not getting a draw from there.Can anyone with this system on there boat tell me what the network voltage is when they are cruising.I have had 2 electrician look at this and they don't know why the reading is so low one guy was from Yanmar. Tom
__________________
Advertisement

tomsboat is offline   Reply With Quote
Old 05-02-2019, 07:04 PM   #2
Guru
 
boomerang's Avatar
 
City: Kilmarnock VA
Country: united states
Vessel Name: YellowBird MMSI 367769170
Vessel Model: 1978 Mainship m1 #149
Join Date: Apr 2016
Posts: 545
Have you verified with a volt meter that it is ,in fact, low? I suppose the first places I would check are the plugs in the engine harness . Try unplugging & reseating the connections. Also make sure the ground connections are all tight & clean. The simple stuff first!
__________________

__________________
-Shawn-
boomerang is offline   Reply With Quote
Old 05-02-2019, 08:45 PM   #3
Dauntless Award
 
Wxx3's Avatar
 
City: New York, NY
Country: USA
Vessel Name: Dauntless
Vessel Model: Kadey Krogen 42 - 148
Join Date: Jan 2013
Posts: 2,703
Yes, it's unclear what is being measured.
Check your voltage using a voltmeter and various points.

My engine voltage meter changes depending upon the phase of the moon and and other factors depending upon its mood.
So, we have a new policy: Don't ask, don't tell.
__________________
Richard on Dauntless,
New York

a Kadey Krogen 42 currently: https://share.garmin.com/dauntless
Blog:
https://dauntlessatsea.com
Wxx3 is offline   Reply With Quote
Old 05-03-2019, 02:15 AM   #4
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,266
With engine running around 1500rpm, and shore power (thus charger) off, go check volts of your batts with a digital meter. Might have a dead alternator or other wiring problem. Should be 13.8-14.2Vdc.
Ski in NC is offline   Reply With Quote
Old 05-03-2019, 08:12 AM   #5
TF Site Team
 
City: Westerly, RI
Country: USA
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 1,722
Roughly 14 volts. Give or take a tick. (I have an analog gauge).
Shrew is offline   Reply With Quote
Old 05-03-2019, 08:16 AM   #6
TF Site Team
 
City: Westerly, RI
Country: USA
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 1,722
Quote:
Originally Posted by Wxx3 View Post

My engine voltage meter changes depending upon the phase of the moon and and other factors depending upon its mood.
So, we have a new policy: Don't ask, don't tell.
We used to own a boat that, when the fridge kicked on, the voltage meter dropped to about 10-11 volts and the temp guage would rise to 190F. As soon as the fridge kicked off, the voltage jumped to 13, and the temp went back to 165-170F.

It got to where if the run was under 2 hours, I'd just turn the fridge off to reduce anxiety.
__________________

Shrew 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 08:32 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012