Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 28-12-2007, 16:05   #1
Registered User

Join Date: Jan 2007
Posts: 497
Images: 1
3 stage regulator question

I recently acquired a Hehr Aqualine 10-82 regulator. The manual for the unit says the following:

<<
This regulator is a "high side" device intended. for use with "P" type alternators only. It cannot be used with alternators which are regulated through the ground side of the field winding.
>>

I understand a "P" type alternator is one which is set up for external regulation. But I don't understand the meaning of "high side" device. I also don't understand the 2nd line, I thought alternators were regulated by varying the voltage on the field. Can anyone enlighten me as to what this actually means?

I was thinking of using this with a Prestolite/Leece-Neville 90 amp alternator that has been re-wired for external regulation by grounding one side of the field to the case and running the other field lead outside the case to be connected to the regulator. Prestolite makes a kit to do this. This regulator can control the amp output and I going to set it at 50 max figuring that would easily re-charge our tiny 230 amp house bank and not kill the alternator. Will this alternator will work with the regulator?
__________________
jdoe71 is offline   Reply With Quote
Old 28-12-2007, 18:57   #2
Registered User

Join Date: Jan 2007
Location: Fremantle Australia
Boat: Schioning 12.3 "Wilderness" Bi-Rig under construction
Posts: 558
Send a message via Skype™ to Whimsical
AFAIK
A P type has the regulation in the positive side of the field winding and the other end is grounded as you suggest you will do to the prestolite.
An N type has the regulation circuit in the negative side with the other side going to positive.
So P or N just means where the reg is connected. Either type can have the reg internal or external to the alternator.
As most systems these days have a negative ground the high side is positive, high or above ground.

Mike
__________________
Whimsical is offline   Reply With Quote
Old 29-12-2007, 07:20   #3
Registered User

Join Date: Jan 2007
Posts: 497
Images: 1
Quote:
Originally Posted by Whimsical View Post
AFAIK
A P type has the regulation in the positive side of the field winding and the other end is grounded as you suggest you will do to the prestolite.
An N type has the regulation circuit in the negative side with the other side going to positive.
So P or N just means where the reg is connected. Either type can have the reg internal or external to the alternator.
As most systems these days have a negative ground the high side is positive, high or above ground.

Mike
That makes so much sense, I can't imagine why I didn't equate the N and P to negative and positive. Thanks for the info, much appreciated.
__________________
jdoe71 is offline   Reply With Quote
Reply

Tags
regulator

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
Smart Regulator for Yanmar Alternator Celestialsailor Electrical: Batteries, Generators & Solar 34 01-08-2014 10:20
3 stage alternator regulator logic Fuss Electrical: Batteries, Generators & Solar 10 28-12-2007 18:48
Alternator, Regulator, and Monitor Selection blahman Electrical: Batteries, Generators & Solar 9 29-03-2007 09:29
Air tool question: damage to pressure regulator? Gator81 Construction, Maintenance & Refit 8 08-11-2006 12:56



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:31.


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.