Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-07-2010, 07:39   #1
Registered User

Join Date: Jan 2010
Location: Spain
Boat: 45' Asphalt Cruiser
Posts: 16
Victron Isolation Transformer Voltage Increase

Everyone is quite helpful here, so thanks.
Installed Victron 240-240v 32-amp isolation transformer connected to Victron Autotransformer that steps down to 2 120v output legs and common neutral (50-amp "boat")

Isolation transformer actually increases incoming voltage to 250-volts so that my LE Enterprises high/low voltage protection pcb and selnoid will not connect to internal lines when shorepower is very good. It will connect if shore is dipping due to other users.

The power protection circuit must measure between L1 and L2 to decided if high or low. Why does the isolation trasnformer increase voltage (although fortunate in low shore situation)?

I do not wish to work around the power protection circuit that is positioned boat-side of the two transformers. Any device that can help or a way to dial down output volatge of the isolation tranformer?

Thanks, Robert
__________________

__________________
Ultimarv is offline   Reply With Quote
Old 12-07-2010, 10:19   #2
Registered User

Join Date: Jan 2010
Location: Spain
Boat: 45' Asphalt Cruiser
Posts: 16
Just to elaborate on the previous problem we had on connecting this, we had to disconnect the casing to "boat" ground wires on both transformers finally get zero volts on the neutral output wire. Now that done, we hit the increased voltag on the isolation transformer output, causing an increase across the two hot legs on the second trasformers L1 and L2 legs. The power protection circuit comes next, beforethe ATS, and it will not let power through - unless incoming shore is less than 240 or so.
__________________

__________________
Ultimarv is offline   Reply With Quote
Old 12-07-2010, 16:24   #3
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
I really think you should be talking to Victron about this.
__________________
DeepFrz is offline   Reply With Quote
Old 12-07-2010, 16:50   #4
cruiser

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Quote:
Originally Posted by DeepFrz View Post
I really think you should be talking to Victron about this.
I agree.
__________________
rwidman is offline   Reply With Quote
Old 12-07-2010, 17:36   #5
CF Adviser
 
Pelagic's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Boat: Van Helleman Schooner 65ft StarGazer
Posts: 6,895
Robert, I have a Victron 7000 isolation transformer, but it is not like your step type so no first hand experience.

Victron gives great technical support so I would offer the same advice….good luck
__________________
Pelagic is offline   Reply With Quote
Old 06-09-2010, 10:42   #6
Registered User

Join Date: Jan 2010
Location: Spain
Boat: 45' Asphalt Cruiser
Posts: 16
I spoke to Victron Netherlands and a great Victron independent consultant, also in the Netherlands. This is the way the come! There only advice is that they make a more expensive unit that can be software configured.

I heard the same thing before purchasing the Mastervolt, only to find out that the software did not configure what they said it would. You have to really have luck in these things, it seems.
__________________

__________________
Ultimarv is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Isolation Transformer and SSB Sailabel Marine Electronics 3 02-04-2010 17:30
Westinghouse Transformer Stolen Kiss Electrical: Batteries, Generators & Solar 5 30-12-2009 09:23
Victron 600 motion30 Electrical: Batteries, Generators & Solar 1 25-10-2009 22:13
Frequency transformer? Jeannius Electrical: Batteries, Generators & Solar 3 09-09-2008 15:58
Isolation transformer Pa La O La Construction, Maintenance & Refit 11 12-08-2008 14:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:36.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.