Posted by Gemin on October 27, 2008, 11:20 am
My 4-year-old Trace inverter has started playing up.... all seems OK
on "tickover" (autosense), then when it senses a load it delivers it
OK, but with such a huge current drain and loud humming noise that the
battery voltage drops until it cuts out. (then restarts, cuts out
etc )
I don't know where the excess current is going and haven't had the lid
off yet - anybody have any idea what might be wrong?
Posted by Morris Dovey on October 28, 2008, 9:39 am
Gemin@sprint.com wrote:
> My 4-year-old Trace inverter has started playing up.... all seems OK
> on "tickover" (autosense), then when it senses a load it delivers it
> OK, but with such a huge current drain and loud humming noise that the
> battery voltage drops until it cuts out. (then restarts, cuts out
> etc )
You might get a bit more help if you told about the DC source and the AC
load.
> I don't know where the excess current is going and haven't had the lid
> off yet - anybody have any idea what might be wrong?
I think perhaps you haven't provided enough info for anyone to even make
a reasonable guess...
--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/
Posted by gemin on October 29, 2008, 11:58 am
wrote:
>You might get a bit more help if you told about the DC source and the AC
>load.
sorry - its a 12vDC input - connected to 4 x 110Ah leisure batteries
via 30A fuses (3 of these fuses have blown).
Output is 240vAC
Load was a 60W lamp
on tickover, battery voltage was 12.8v; when this was load connected
it went down to less than 10v within 10 seconds then cut out...
It has been working fine for 4 years, powering a circuit for my
computers inside the house... no unusual events, accidents or
incidents. The lamp was a test load, not far off the usual drain
from my computer, 75W. The batteries seem OK :-)
Posted by stu on October 29, 2008, 6:34 pm
wrote:
>You might get a bit more help if you told about the DC source and the AC
>load.
sorry - its a 12vDC input - connected to 4 x 110Ah leisure batteries
via 30A fuses (3 of these fuses have blown).
Output is 240vAC
Load was a 60W lamp
on tickover, battery voltage was 12.8v; when this was load connected
it went down to less than 10v within 10 seconds then cut out...
It has been working fine for 4 years, powering a circuit for my
computers inside the house... no unusual events, accidents or
incidents. The lamp was a test load, not far off the usual drain
from my computer, 75W. The batteries seem OK :-)
How did you test the batteries?
I'm guessing you have a dead cell in the battery you are using. (assuming
that the inverter is only running from one of the batteries)
It could also be a loose/dirty connections on your batteries.
If all 4 batteries were connected, fully charged and working it would it
would take a load of "insert your best guess here"(I'm guessing around
2000A) to drop the V from 12.8V to less than 10V in less than 10 seconds.
That's about 20000W, something would be getting very hot.
Posted by RamRod Sword of Baal on October 29, 2008, 11:52 pm
> wrote:
>>You might get a bit more help if you told about the DC source and the AC
>>load.
> sorry - its a 12vDC input - connected to 4 x 110Ah leisure batteries
> via 30A fuses (3 of these fuses have blown).
> Output is 240vAC
> Load was a 60W lamp
> on tickover, battery voltage was 12.8v; when this was load connected
> it went down to less than 10v within 10 seconds then cut out...
> It has been working fine for 4 years, powering a circuit for my
> computers inside the house... no unusual events, accidents or
> incidents. The lamp was a test load, not far off the usual drain
> from my computer, 75W. The batteries seem OK :-)
> How did you test the batteries?
> I'm guessing you have a dead cell in the battery you are using. (assuming
> that the inverter is only running from one of the batteries)
> It could also be a loose/dirty connections on your batteries.
> If all 4 batteries were connected, fully charged and working it would it
> would take a load of "insert your best guess here"(I'm guessing around
> 2000A) to drop the V from 12.8V to less than 10V in less than 10 seconds.
> That's about 20000W, something would be getting very hot.
Suggest you clean all the terminals, both the batteries and the inverter
connections. This will make sure it is not just a high resistance joint.
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> on "tickover" (autosense), then when it senses a load it delivers it
> OK, but with such a huge current drain and loud humming noise that the
> battery voltage drops until it cuts out. (then restarts, cuts out
> etc )