PPRuNe Forums - View Single Post - 787 Batteries and Chargers - Part 1
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Old 7th Mar 2013, 22:32
  #849 (permalink)  
syseng68k
 
Join Date: Jun 2009
Location: Oxford, England
Posts: 297
archae86:

I get a few lines of javascript from the link, which says access denied.
Have tried using firefox and IE with the same result, do you have a link
that works ?.

Was able to find the other report from the NTSB website and some things
I did notice from an initial scan are that there are only two temp sensors,
but also that the isolation contactor in the battery case has normally
closed contacts. It's driven by logic on the BMU boards, also inside the case,
so if they fail for whatever reason, there is no way that the battery can be
disconnected from load or charger.

It would be much safer to make the contacts normally open, so if the power
or system fails for any reason, the battery is automatically disconnected...

Last edited by syseng68k; 7th Mar 2013 at 22:34.
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