11-25-2019, 05:55 PM
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#51 (permalink)
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Corporate imperialist
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I actually don't know it can't be more than 10 amps.
But this time I am going to extend the wires and put my DC amp clamp on it.
For protection I am going to install a 3 amp diode in reverse bias across the + and -, an MOV and maybe a 12v light bulb.
The 12v light bulb will do 3 things. It it will let me know the 12v is functional, will be like a charge bleed resistor to help smooth voltage on inductive loads and it will let me know if there are any 12v spikes indicated by it getting brighter for a split second.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-04-2019, 06:03 AM
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#52 (permalink)
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Corporate imperialist
Join Date: Jul 2011
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Now I lost a fan and it's safety interlocking the high voltage DC system.
Apparently the fans this thing uses are not regular fans, they produce a "go , no go" signal.
So if one of them quits it shuts down the high voltage side.
Hopefully I can find one of these fans. I really don't like the idea of bypassing a safety on something like this.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-04-2019, 07:59 AM
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#53 (permalink)
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EV OR DIESEL
Join Date: Dec 2007
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How many wires and what voltage on the fans? Plenty of PC cooliyfans have a third wire that is a tachometer. I have no idea if that’s the same as your setup, but it could be.
I’ve also disassembled a few small fans over the year and repaired them by using parts from incorrectly sized fans.
Just some thoughts. Hope you can get it back up on workyon the cheap.
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12-04-2019, 08:46 AM
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#54 (permalink)
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Corporate imperialist
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That's what I'm expecting. I haven't taken it apart yet.
I believe the fans are 240vac or 24vdc, cause they still come on with no 12v. I could make 120v work if needed.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-05-2019, 05:24 AM
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#55 (permalink)
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Corporate imperialist
Join Date: Jul 2011
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It's working now.
I found a little nut plate that doesn't appear to belong to this rig inside the problem modular power inverter. I took the module out and heard something move around inside it and shook free a little square nut plate.
Put it back in and it works fine.
Some how that nut caused a non catastrophic fault that shut it down and doesn't appear to have caused any damage.
That could have gone so bad so fast.
Some how I avoided disaster.
Maybe that's what shorted out my 12v power supply. The little nut plate is to large to fall inside through the air cooling holes.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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12-05-2019, 11:05 AM
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#56 (permalink)
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Somewhat crazed
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A lot of power supplies now have short protection in the output. Short it and it shuts down. If it's relatively stupid, you'd never know why.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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