PLEASE NOTE: If you had an account with the previous forum, it has been ported to the new Genetry website!
You will need to reset the password to access the new forum. Click Log In → Forgot Password → enter your username or forum email address → click Email Reset Link.

Notifications
Clear all

PJ 8000w SP got shorted out

39 Posts
5 Users
0 Likes
502 Views
 JSG
(@jsg)
Active Member
Joined: 2 years ago
Posts: 17
Topic starter  

Well, my inverter got shorted out. I believe both 110 sides hit the neutral together. Blew MOSFETs apart, and driver board. Have replaced both, but nothing. Only one side of the MOSFET boards light up, and the driver board gets hot enough to dis-color fairly quickly. With the driver removed, still only lights up one side of the MOSFET boards, but nothing getting hot. I believe the converter board has been smokes, but it looks ok. Would anyone happen to have any insights on where to go next? Thank you.

//content.invisioncic.com/g308908/monthly_2022_10/IMG_20221011_182333.thumb.jpg.94778fd4eb7a722458b3f171334c0c32.jpg

//content.invisioncic.com/g308908/monthly_2022_10/IMG_20221001_114239.thumb.jpg.d5ab6faf592bdf18f292a445b86a5e40.jpg

//content.invisioncic.com/g308908/monthly_2022_10/IMG_20221002_095448.thumb.jpg.052d1124e03c676c6bec903f98865c83.jpg


   
Quote
(@notmario)
Reputable Member
Joined: 3 years ago
Posts: 314
 

Hmm, shorted out is all?


   
ReplyQuote
 JSG
(@jsg)
Active Member
Joined: 2 years ago
Posts: 17
Topic starter  

Yes. That is what I am told 


   
ReplyQuote
(@dickson)
Noble Member
Joined: 4 years ago
Posts: 1047
 

Well, my inverter got shorted out. I believe both 110 sides hit the neutral together

DO you mean  grid charging input and  inverter output is on at the same time ?   


   
ReplyQuote
 JSG
(@jsg)
Active Member
Joined: 2 years ago
Posts: 17
Topic starter  

That's what I believe happened to mine. Both 110 hit the neutral. MOSFET boards and driver board are replaced, only one side of the MOSFETs boards light green, and the new driver board gets hot fast.


   
ReplyQuote
(@dickson)
Noble Member
Joined: 4 years ago
Posts: 1047
 

That's what I believe happened to mine.

NOT good seeing the FETs  exploded .    The heat  will  destroy your converter board  or rev 11.3  control board needed from Powerjack .   The copper trace on the mainboard  may be crack or burned also  .  Check the mainboard for black spots .    Complete  mainboard with mosboard and cap  is about 200 dollars .   


   
ReplyQuote
(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2883
 
Posted by: @jsg
MOSFET boards and driver board are replaced, only one side of the MOSFETs boards light green, and the new driver board gets hot fast.

2 questions:

  • Do all FET boards light green if the driver board is removed?
  • What part(s) on the driver board gets hot?

   
ReplyQuote
(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2883
 

make that 3 questions, haha 😉

I am assuming the driver board heats up when the power switch is turned on.  Does the control board light up as usual?


   
ReplyQuote
(@robertm)
Estimable Member
Joined: 3 years ago
Posts: 205
 
Posted by: @dickson
Well, my inverter got shorted out. I believe both 110 sides hit the neutral together

I'm trying to understand how it shorted.

This is an AMG version? You were using the universal AC output?

Was it jumpered wrong?

L1 and L2 are "110V", so you use separate neutral terminals in the 110 mode. In the 220 mode you jumper the neutrals and use the together.


   
ReplyQuote
(@dickson)
Noble Member
Joined: 4 years ago
Posts: 1047
 

This is an AMG version? You were using the universal AC output?

Was it jumpered wrong?

I  was thinking  he was charging the battery with inverter grid 110v input  and then switch  the inverter on output 110v  at the same time .    There should be no  grid power coming to  inverter output terminal   but grid power can come  to the inverter input  to charge the battery  and the  inverter output is shut off .        


   
ReplyQuote
(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2883
 
Posted by: @dickson
There should be no grid power coming to inverter output terminal but grid power can come to the inverter input to charge the battery and the inverter output is shut off

This is not electrically possible.

If the AC input is being utilized for charge, there WILL be AC output from said AC input.


   
ReplyQuote
(@dickson)
Noble Member
Joined: 4 years ago
Posts: 1047
 

 there WILL be AC output from said AC input.

The power from the main only go to the input of inverter  for charging  but  power from the main should  not go to the inverter output terminal  and a  transfer switch  will prevent  grid  power going to inverter .    There WILL be AC output from the inverter  AC input which is the terminal  that is charging the battery  .    I  am not sure if this is what happen to his  inverter  . I do not think he has a  transfer  switch  .    


   
ReplyQuote
(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2883
 
Posted by: @dickson
The power from the main only go to the input of inverter for charging but power from the main should not go to the inverter output terminal and a transfer switch will prevent grid power going to inverter .

Again, not electrically possible.

All the internal relay(s) in LF inverters do, is connect the AC input to the AC output.  The AC output is directly connected to the transformer--so you get power pass-thru and the ability to use the same main transformer and same FETs for battery charge functionality.

HF inverters are different.  But we're talking LF inverters here.


   
ReplyQuote
(@dickson)
Noble Member
Joined: 4 years ago
Posts: 1047
 

Now I am thinking maybe  he was not charging the battery .   He maybe  backfeed the grid power back to the output of the inverter  by turning on the main by accident .  I do not know what happen  .    Why one side no LED light  ?     I do not think  all 4  LED  will  be ON .    IS this PJ inverter is  where someone say it was working good and then I do not know what happen ?    The picture look like he done a lot of work setting it up .   


   
ReplyQuote
(@robertm)
Estimable Member
Joined: 3 years ago
Posts: 205
 
Posted by: @dickson
Now I am thinking maybe he was not charging the battery . He maybe backfeed the grid power back to the output of the inverter by turning on the main by accident . I do not know what happen . Why one side no LED light ? I do not think all 4 LED will be ON . IS this PJ inverter is where someone say it was working good and then I do not know what happen ? The picture look like he done a lot of work setting it up .

I have a similar inverter, and wish the guy would help us understand how it shorted. Maybe it was user error?


   
ReplyQuote
Page 1 / 3