Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-05-2020, 09:04 AM   #1
Senior Member
 
City: Corpus Christi
Country: USA
Vessel Name: Sunrise
Vessel Model: Gemini 105mc
Join Date: Oct 2014
Posts: 136
Send a message via Skype™ to The Brockerts
Is a UPS needed for computers on a Trawler ?

I'm a computer guy and I'm getting ready to move on board full time in the next 90 days and will doing my computer work for a few months onboard. Afterward my computer addiction will not change. Today I run UPS's for my systems and as much direct DC as possible. My new to me 1990 Carver Californian has has 4 8D batteries and it make me wonder why would I need several UPS systems. I'm thinking about ditching the UPS systems and just running some 6 or 8g wire to my computer closet and connecting everything up there. Anyone tried this?. What about voltage drops when you fire up the big cat's (3208s)?. Battery chargers running around 13v floating causing problems?


The Brockerts
__________________
Advertisement

The Brockerts is offline   Reply With Quote
Old 08-05-2020, 09:40 AM   #2
Guru
 
ScottC's Avatar
 
City: Malmö
Country: SWEDEN
Vessel Name: ABsolutely FABulous
Vessel Model: Greenline 33 Hybrid (2010)
Join Date: Nov 2019
Posts: 554
If you have an inverter or intend to install one (to achieve 120v), then you will most likely already have UPS. I have a Victron multi-plus charger/inverter and it has a UPS feature. Granted, we run laptop computers with their own batteries, but I've noticed plenty of other devices which are sensitive to power interruptions are never impacted when shore power goes out. The lights never so much as flicker. The inverter also protects against power surges/variations...and I think this could be a risk if you connect the PC directly to the batteries.
__________________

__________________
Scott
2010 Greenline 33' Hull #54
Home port: Malmö, SWEDEN
Currently in: Gruissan, FRANCE
ScottC is offline   Reply With Quote
Old 08-05-2020, 11:38 AM   #3
Senior Member
 
Ventana's Avatar
 
City: Sitka
Country: US
Vessel Name: Ventana
Vessel Model: Krogen 42
Join Date: Mar 2018
Posts: 345
UPS is not a bad idea. I bought a small inverter just for our nav computer, but soon after installing had a loose DC ground issue in the wheelhouse that had the computer cutting out until I found the problem. Voltage drop from starting the engine would be similar.
Ventana is offline   Reply With Quote
Old 08-05-2020, 12:25 PM   #4
Senior Member
 
City: Corpus Christi
Country: USA
Vessel Name: Sunrise
Vessel Model: Gemini 105mc
Join Date: Oct 2014
Posts: 136
Send a message via Skype™ to The Brockerts
I was thinking this direct connection might be a problem. I'll go to plan B, get several AC to 12VDC converter's and wire them into a breaker on the Inverter side of the panel. This will cut down on having those little bricks/transformers all over the place.
The Brockerts is offline   Reply With Quote
Old 08-05-2020, 01:10 PM   #5
Valued Technical Contributor
 
DavidM's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 5,489
Those bricks typically take 120V AC and transform and rectify it to the 18-19V DC that your laptop's power jack needs. Maybe they will also run on 12V DC. Don't know. But if not powering directly from 12V DC is not possible.

A UPS has several functions: surge protection, ability to run continuously with no blip whatsoever and the ability to keep running as long as its DC supply holds up. With the bricks acting as a surge protector and the internal battery in the laptop acting as a source of continuous power I don't think you need the first two or even three for several hours until your laptop's batteries die.

A 1,000 watt inverter will extend your no AC power running time to days as long as your house batteries stay up. It can be a simple one where you plug your bricks in directly and run 12 gauge wires from your batteries to power it.

David
DavidM is online now   Reply With Quote
Old 08-05-2020, 01:20 PM   #6
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 9,331
I've run an "all in one" desktop computer for navigation since 2016. It lives on one of my inverter circuits and flawlessly switches from shore to generator to inverter power. Definitely want a pure sine wave inverter.

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 08-05-2020, 03:04 PM   #7
Veteran Member
 
City: Middle River MD
Country: USA
Join Date: Dec 2019
Posts: 61
Just install an inverter that functions as a UPS. Check the transfer time. Also you'll want pure sine wave.

The higher quality units will have both of these features. 16ms is the generally accepted transfer time for computer equipment. Basically 1 cycle at 60 hz
jhall767 is offline   Reply With Quote
Old 08-05-2020, 03:24 PM   #8
Moderator Emeritus
 
ksanders's Avatar
 
City: SEWARD ALASKA
Country: USA
Vessel Name: LISAS WAY
Vessel Model: BAYLINER 4788
Join Date: Feb 2011
Posts: 4,685
Quote:
Originally Posted by The Brockerts View Post
I'm a computer guy and I'm getting ready to move on board full time in the next 90 days and will doing my computer work for a few months onboard. Afterward my computer addiction will not change. Today I run UPS's for my systems and as much direct DC as possible. My new to me 1990 Carver Californian has has 4 8D batteries and it make me wonder why would I need several UPS systems. I'm thinking about ditching the UPS systems and just running some 6 or 8g wire to my computer closet and connecting everything up there. Anyone tried this?. What about voltage drops when you fire up the big cat's (3208s)?. Battery chargers running around 13v floating causing problems?


The Brockerts
I found that the UPOS switching from AC power pass through mode to inverted power sometimes casused things like computers routers, etc... to reboot.

So... I added a UPS
__________________
Kevin Sanders
Bayliner 4788
Seward, Alaska
ksanders is offline   Reply With Quote
Old 08-05-2020, 05:00 PM   #9
Guru
 
caltexflanc's Avatar
 
City: North Carolina for now
Country: USA
Vessel Name: Small Incentive
Vessel Model: Boston Whaler 130 Sport
Join Date: Aug 2011
Posts: 6,240
One thing many good UPS's do is robust surge protection as well. I brought the two I had at home with me when we moved onto the boat for that very reason. Aside from that my Magnum inverter had a very fast transfer time, but as they say, you never know, it's a boat after all. Critical things require redundancy IMO.

I wouldn't hook up electronics to starter batteries myself. People like NewMar make a form of UPS to mitigate voltage drop on systems where they are.
__________________
George

"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"
caltexflanc is offline   Reply With Quote
Old 08-05-2020, 08:33 PM   #10
Senior Member
 
Solly's Avatar
 
City: Solomons MD.
Country: USA
Vessel Name: Sun Runner
Vessel Model: 1985 Mainship 34 Trawler MK III
Join Date: Mar 2018
Posts: 277
Might want to consider a way that will provide 120v for the monitor also. Probably an inverter.
Solly is offline   Reply With Quote
Old 08-09-2020, 12:23 PM   #11
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: 2,409
Perhaps I’m missing something, but I run my NUC and it’s monitor directly off the boat’s 12VDC system. We haven’t had any problems so far, fingers crossed.

As far as a voltage drop when starting engines, we have a starter battery that is not connected to the house system. Similarly the thruster is isolated from the house bank.

Jim
JDCAVE is offline   Reply With Quote
Old 08-09-2020, 01:41 PM   #12
Guru
 
Lepke's Avatar
 
City: Between Oregon and Alaska
Country: US
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 1,983
Quote:
Originally Posted by O C Diver View Post
I've run an "all in one" desktop computer for navigation since 2016. It lives on one of my inverter circuits and flawlessly switches from shore to generator to inverter power. Definitely want a pure sine wave inverter.

Ted
Me, too, for 10 years. Never lost a computer or component.
Lepke is offline   Reply With Quote
Old 08-09-2020, 01:56 PM   #13
Senior Member
 
Jmarsh203's Avatar
 
City: All over
Country: Where my boat is
Vessel Name: Chapter II
Vessel Model: 1972 42 foot Alloy Mfg
Join Date: Sep 2019
Posts: 107
Look at the spec sheet on the computer itself for dc requirements. I have seen some of those nuc computers have working ranges between 6-48v
volts and are supposed to run everything in between just fine. So no you shouldn’t have any problems hooking up and running off your battery’s and in fact will continue working long after you no longer have enough power to even turn over an engine. Here is some specs for dc-dc power regulating boards for nuc’s

https://www.mini-box.com/DCDC-NUC
__________________

Jmarsh203 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 05:41 AM.


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
×