---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 09/16/14: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:29 AM - latest edition? (Ken Ryan) 2. 11:53 AM - Re: latest edition? (Robert L. Nuckolls, III) 3. 01:09 PM - alternator knocked off line when strobes turned on (Steve Sundquist) 4. 05:11 PM - Re: alternator knocked off line when strobes turned on (Robert L. Nuckolls, III) 5. 08:56 PM - Re: alternator knocked off line when strobes turned on (Steve Sundquist) ________________________________ Message 1 _____________________________________ Time: 10:29:07 AM PST US From: Ken Ryan Subject: AeroElectric-List: latest edition? I have the AeroElectric Connection Revision 12A. Is it current? ________________________________ Message 2 _____________________________________ Time: 11:53:40 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: latest edition? At 12:27 2014-09-16, you wrote: >I have the AeroElectric Connection Revision 12A. Is it current? Yessir . . . it is. Bob . . . ________________________________ Message 3 _____________________________________ Time: 01:09:58 PM PST US From: Steve Sundquist Subject: AeroElectric-List: alternator knocked off line when strobes turned on Good day, When my strobes are turned on, after two or three seconds the alternator goes off line. I can turn the strobe switch off, recycle the master switch and the alternator comes back on line. With the strobes off, I can load the electrical system clear up to fifty amps with the landing light, nav. lights, pitot heat, etc. and the alternator won't go off line. When the alternator goes off line with the strobes on, the strobes continue to operate off the battery. This behavior just started. The aircraft is an older Super Cub. The only instrumentation in the electrical system is an ammeter on the alternator output. I cannot find a breaker in the field circuit. The alternator is an InterAv (Motorola) and the voltage regulator appears to be a Motorola. The strobes are Whelan. Any thoughts are appreciated. Thank you, Steve S. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ________________________________ Message 4 _____________________________________ Time: 05:11:52 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: alternator knocked off line when strobes turned on At 15:08 2014-09-16, you wrote: > >Good day, > >When my strobes are turned on, after two or three seconds the >alternator goes off line. I can turn the strobe switch off, recycle >the master switch and the alternator comes back on line. With the >strobes off, I can load the electrical system clear up to fifty amps >with the landing light, nav. lights, pitot heat, etc. and the >alternator won't go off line. When the alternator goes off line >with the strobes on, the strobes continue to operate off the >battery. This behavior just started. > >The aircraft is an older Super Cub. The only instrumentation in the >electrical system is an ammeter on the alternator output. I cannot >find a breaker in the field circuit. The alternator is an InterAv >(Motorola) and the voltage regulator appears to be a Motorola. The >strobes are Whelan. Is this a new condition? Try loading the system with lights and heat and turning all off simultaneously to see if the trip repeats. What form and function of OV protection is included in your system? Sounds like the ov trip has become 'twitchy' . . . do you have an accurate voltmeter in the system? What is the normal bus voltage. Bob . . . ________________________________ Message 5 _____________________________________ Time: 08:56:48 PM PST US Subject: Re: AeroElectric-List: alternator knocked off line when strobes turned on From: Steve Sundquist Thank you for your response. This is a new condition. The OV protection relay is part of the InterAv system, part no. 635-62448. There is no voltmeter in the system so I don't know what the normal buss voltage is. The only instrumentation in the system is the ammeter on the alternator output. I will load up the system and turn it all off at once after I reinstall the alternator. I removed it for testing at a local shop. Sent from my iPad > On Sep 16, 2014, at 5:09 PM, "Robert L. Nuckolls, III" wrote: > > > At 15:08 2014-09-16, you wrote: >> >> Good day, >> >> When my strobes are turned on, after two or three seconds the alternator goes off line. I can turn the strobe switch off, recycle the master switch and the alternator comes back on line. With the strobes off, I can load the electrical system clear up to fifty amps with the landing light, nav. lights, pitot heat, etc. and the alternator won't go off line. When the alternator goes off line with the strobes on, the strobes continue to operate off the battery. This behavior just started. >> >> The aircraft is an older Super Cub. The only instrumentation in the electrical system is an ammeter on the alternator output. I cannot find a breaker in the field circuit. The alternator is an InterAv (Motorola) and the voltage regulator appears to be a Motorola. The strobes are Whelan. > > Is this a new condition? Try loading the system with > lights and heat and turning all off simultaneously > to see if the trip repeats. > > What form and function of OV protection is included > in your system? Sounds like the ov trip has become > 'twitchy' . . . do you have an accurate voltmeter > in the system? What is the normal bus voltage. > > > > > Bob . . . > > > > ------------------------------------------------------------------------------------- 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.