Re: Weird panel dump

["RockyTSquirrel" <gafa@xxxxxxx>]

Check the loop  resistance  and the stability of the panel voltage..

I have had  some 80's  Firelite panels with a "Floating"  panel voltage
(would change 4-6 volts  from day to day..)  which changed the percentage of
current to trip  on the load of each zone loop.

If the loop resistance was close to the edge of the acceptable limit,
changing the loop current  might cause the zone to trip..

RTS



"nick markowitz"  wrote in message
news:87edc198-d3b0-494c-aa3c-9f34c44b9e38@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

On Nov 3, 4:09 am, G. Morgan <usenet_ab...@xxxxxxxxx> wrote:
> nick markowitz <nmarkow...@xxxxxxxxx> wrote:
> >Got a trans-mix facility with an older FCI releasing panel  where for
> >some reason the unit activated for no apparent reason checked all
> >heats etc wiring  which as replaced couple years ago. Can find no
> >reason for it luckily it was only water  covering a butane tank but
> >this one got me stumped any one else ever have this happen.
>
> That panel is setup for cross-zone detection before the release, right?

Panel releases on single event and was in full alarm when i got there.
checked for shorts, grounds you name it and could find no reason why
it activated used mego-meter for insulation testing and it showed all
components with in spec.. It uses those tube type bi metal heat
sensors  was 50 degree day.
The panel is of 80's vintage and unless something broke down in
control it has me stumped.