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Post by Deleted on Aug 10, 2020 14:51:21 GMT
Where in the system are you?
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Post by Deleted on Aug 10, 2020 14:58:00 GMT
"on" not "in" unless you are referring to this modern big brother thing with the phones and all that.
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Post by naughtyfox on Aug 10, 2020 15:03:56 GMT
This would be the naughtyfox who has no problems with his alternator, eh? Not through any technical ability I'm sure. Well.... we chose to have a new one stuck on 5 years ago when the engine was renovated. The old one (unknown origin/age) was working, but why pass up an opportunity? This one is 50amp (as was the one before), and Czech-made (Czechoslovakia has a reputation for quality with manufacturing). I know little about electricity, 'tis be true, but I do know that tachyons are hypothetically predicted to travel faster than light, and I bet an alternator running on those would be a good 'un.
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Post by Deleted on Aug 10, 2020 15:07:58 GMT
Not through any technical ability I'm sure. Well.... we chose to have a new one stuck on 5 years ago when the engine was renovated. The old one (unknown origin/age) was working, but why pass up an opportunity? This one is 50amp (as was the one before), and Czech-made (Czechoslovakia has a reputation for quality with manufacturing). I know little about electricity, 'tis be true, but I do know that tachyons are hypothetically predicted to travel faster than light, and I bet an alternator running on those would be a good 'un. As stated, ignore on principle.
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Post by Deleted on Aug 10, 2020 15:10:55 GMT
Not all alternators need a lamp. My domestic alternator is self exciting I only have one lamp for the starter alternator, this sometimes glows and the buzzer sounds slightly when the batteries are fully charged, nothing wrong with the alternator (its been checked) but could in my case be due to the VSR and a miniscule difference in alternator voltages. Interesting, so the lamp could be for the engine battery 70amp alternator. As I suggested earlier that lamp is almost certainly for the engine alternator. I reckon the lamp for the other one is cable tied to the back of the control panel. There are machine sensing and self excited alternators but I suspect that the 110a one is the former type and needs the current through a lamp to get it going. You just have to find where that lamp is (Disclaimer: this could all be completely wrong and worthless advice).
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Post by Deleted on Aug 10, 2020 15:12:21 GMT
Where in the system are you? Does that have a bearing on wether the alternator works correctly or not? just south of Birmingham on the GU
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Post by Deleted on Aug 10, 2020 15:13:02 GMT
Interesting question for the slightly more electrically knowledgeable like Telemachus. Can two alternators be excited by one lamp or do they need one each? I assume they need one each but don't know for sure. Not all alternators need a lamp. My domestic alternator is self exciting I only have one lamp for the starter alternator, this sometimes glows and the buzzer sounds slightly when the batteries are fully charged, nothing wrong with the alternator (its been checked) but could in my case be due to the VSR and a miniscule difference in alternator voltages. Your engine isn't by any chance a Beta marine unit without the deluxe control panel is it? The beta 90 I installed myself in my barge in 2011 had the lamp for the optional second alternator (Iskra 175a unit) cable tied behind the panel so I had to drill the panel and pop the lamp on myself. That was because I opted for the simple panel rather than the expensive one. Presumably they assume people going for the cheap panel will not be specifying the £300 or whatever extra alternator
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Post by Deleted on Aug 10, 2020 15:30:17 GMT
Interesting, so the lamp could be for the engine battery 70amp alternator. As I suggested earlier that lamp is almost certainly for the engine alternator. I reckon the lamp for the other one is cable tied to the back of the control panel. There are machine sensing and self excited alternators but I suspect that the 110a one is the former type and needs the current through a lamp to get it going. You just have to find where that lamp is (Disclaimer: this could all be completely wrong and worthless advice). Its good that you are speaking from experience and not just your fevered imagination but it could be anything - a loose or corroded connection, worn alternator brushes...the list is almost infinite. Grobag needs a expert with a multimeter actually looking at said installation.
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Post by Deleted on Aug 10, 2020 15:30:38 GMT
It’s an Isuzu. There is a sterling pro digital 4 step alternator regulator in the engine bay. I’d put a photo on if I knew how.
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Post by Deleted on Aug 10, 2020 15:35:42 GMT
Upload a pic to imgbb.com then link it to a thread using the 'insert image' icon but you may as well share a photo of a teabag. You can't tell by looking.
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Post by Deleted on Aug 10, 2020 15:37:55 GMT
Not all alternators need a lamp. My domestic alternator is self exciting I only have one lamp for the starter alternator, this sometimes glows and the buzzer sounds slightly when the batteries are fully charged, nothing wrong with the alternator (its been checked) but could in my case be due to the VSR and a miniscule difference in alternator voltages. Your engine isn't by any chance a Beta marine unit without the deluxe control panel is it? The beta 90 I installed myself in my barge in 2011 had the lamp for the optional second alternator (Iskra 175a unit) cable tied behind the panel so I had to drill the panel and pop the lamp on myself. That was because I opted for the simple panel rather than the expensive one. Presumably they assume people going for the cheap panel will not be specifying the £300 or whatever extra alternator Yes it is a Beta and is so old (27 years) there was only one type of panel and the circuit diagrams are hand drawn. The second alternator is a Prestolite 90amp jobbie and I can assure you there is no lamp hanging about behind the panel
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Post by Deleted on Aug 10, 2020 15:40:25 GMT
It will be the rectifier on the smaller alternator which is the one with the lamp on the dash panel
It's not a failure as such just a gradual breakdown of the diodes.
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Post by Deleted on Aug 10, 2020 15:42:16 GMT
Your engine isn't by any chance a Beta marine unit without the deluxe control panel is it? The beta 90 I installed myself in my barge in 2011 had the lamp for the optional second alternator (Iskra 175a unit) cable tied behind the panel so I had to drill the panel and pop the lamp on myself. That was because I opted for the simple panel rather than the expensive one. Presumably they assume people going for the cheap panel will not be specifying the £300 or whatever extra alternator Yes it is a Beta and is so old (27 years) there was only one type of panel and the circuit diagrams are hand drawn. The second alternator is a Prestolite 90amp jobbie and I can assure you there is no lamp hanging about behind the panel So how does the Prestolite jobbie get excited?
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Post by Deleted on Aug 10, 2020 15:46:31 GMT
Sorry I answered a question that wasn’t directed at me, confused 🙄😂
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Post by Deleted on Aug 10, 2020 15:50:25 GMT
Sorry I answered a question that wasn’t directed at me, confused 🙄😂 Welcome to the forum.. Everyone is confused here. Or was it just me
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