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renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678
Posted: 08:20am 19 Feb 2018
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Could you just bridge across it to see if that's what made the inverter fail? Cheers Caveman Mark Off grid eastern Melb
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 08:41am 19 Feb 2018
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They should normally be open circuit, they only short out when high voltage is applied.There are only 10 types of people in the world: those who understand binary, and those who don't.
brucedownunder2 Guru Joined: 14/09/2005 Location: AustraliaPosts: 1548
Posted: 10:18pm 19 Feb 2018
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ok so if lighening strikes them ,they would then go short circuit . AND stay short circuit?
Put my buzzer across them to see if they are short circuit -without de-soldering them . fairly esy if thats the condition in a failure you guys are magic
BruceBushboy
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 11:06pm 19 Feb 2018
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They should only be short in a high voltage situation and then open circuit again. But as far as I the only way to be sure is put new ones in.There are only 10 types of people in the world: those who understand binary, and those who don't.
brucedownunder2 Guru Joined: 14/09/2005 Location: AustraliaPosts: 1548
Posted: 01:01am 20 Feb 2018
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Thanks Mad...
I just did a quick check with my meter and it looks like they are short - not open-
,So matbe they are good ,will have to remove the board to do a proper check.
Spent some time looking at all bits and soldered joints ,ribbon cables ,Etc . all seem perfect to look at
One important thing I'll repeat, The lightening strike was external to the whole inverter , it's path must have been trough the steel unistrut mounting frame ADJACENT to the inverter BUT bolted to it -again no flash marks -only the one big horrible mark where the strike left the windmill cable ,through the connection block and arched acrossed to the unistrut.
No visible signs of spatter at all anywhere ,except on the connection block ,which must have been a mm or so from the unitrut. another mm or so and maybe nothing would have been damaged.
BruceBushboy
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 01:18am 20 Feb 2018
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Bruce it is quite simple they should be open circuit, if not they have shorted and need to be replaced.
They can take a certain amount of high voltage but there is a limit, yours have passed that point.Edited by Madness 2018-02-21There are only 10 types of people in the world: those who understand binary, and those who don't.
renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678
Posted: 09:02am 04 Mar 2018
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How did you go Bruce?Cheers Caveman Mark Off grid eastern Melb
brucedownunder2 Guru Joined: 14/09/2005 Location: AustraliaPosts: 1548
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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