---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 03/23/22: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:44 AM - Re: Voltage Regulator Questions (farmrjohn) 2. 09:39 AM - Re: Voltage Regulator Questions (user9253) 3. 11:19 AM - Re: Voltage Regulator Questions (user9253) ________________________________ Message 1 _____________________________________ Time: 08:44:30 AM PST US Subject: AeroElectric-List: Re: Voltage Regulator Questions From: "farmrjohn" Thanks all for the replies. To clarify question 1 about combining the A and S lead, the circuit breaker protection is a 5 amp fuse vs. the 2 amp shown on the diagram, which is consistent with Zeftronics instructions. In that case would it be OK to combine per the Z-11 diagram? I was asking about replacing the wire because there really isn't that much available extra length on the existing to replace the existing faston connectors. I do have the pidg connectors. John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=506377#506377 ________________________________ Message 2 _____________________________________ Time: 09:39:57 AM PST US Subject: AeroElectric-List: Re: Voltage Regulator Questions From: "user9253" About jumping terminals "A" and "S" together: The short answer is yes. The long answer is: Those two terminals already do get connected together when the alternator switch is on. The path is from terminal "A" to the alternator "B" lead, to the 60 amp current limiter, to the main power bus, through the small fuse to the alternator switch, to terminal "S". Since the 2 amp fuse has been replaced with a 5 amp fuse, terminals "A" and "S" can be jumped together and the wire from "A" to "B" can be removed. Everything should work fine for a few years. There could be a future problem if resistance develops due to corrosion in the circuit between the main power bus and terminal "S". The voltage dropped across that resistance will be greater now that the circuit is also carrying alternator field current. The voltage regulator will then sense a lower voltage than bus voltage. And the voltage regulator will increase field current to increase the voltage on terminal "S". This will result in over voltage on the main power bus. During the annual condition inspection, measure the voltage drop while under load between the main power bus and voltage regulator terminal "S". -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=506378#506378 ________________________________ Message 3 _____________________________________ Time: 11:19:06 AM PST US Subject: AeroElectric-List: Re: Voltage Regulator Questions From: "user9253" Oops, I was wrong. Looking at the schematic in post #1 above, it is not clear how the relay is wired. So I take back what I said about terminals "A" and "S" already being connected together when the alternator switch is turned on. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=506380#506380 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.