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727 Captain >> 727 Captain >> Avionics cut-off
https://www.captainsim.org/forum/csf.pl?num=1297426558

Message started by Ricardo Rodrigues on Feb 11th, 2011 at 12:15pm

Title: Re: Avionics cut-off
Post by LOU on Feb 12th, 2011 at 3:30am
Ricardo,

Having the meter selector in Bus-Tie or any other position would make no difference since it's only a meter to read the various positions.
The essential power selector is the switch that keeps the essential bus powered. It must be on an operating generator. Normally, it would be kept on the number three generator so as to even out the load. You would never select essential to the number two generator unless it was the only operating generator because load bus two powers the F/O's instruments and essential powers the Captain's instruments. That would be putting all your eggs in one basket.

I have never had a loss of electrical power or loss of avionics in any CS plane.

I noticed in your screen shot that the ground power was still connected...were you in flight? If so that would be a very long power cable!  ;D
I also noticed that your battery volts look a bit low, but since the 727 had a pulsing charger it could have been going through a cycle. In any event I doubt that would be your problem.

Unless you have some failure programed into FSX I don't know why you are loosing radio power. Are you using some cold and dark start-up?

When I select a CS plane from the FSX main start menu, the plane comes up with the engines running and a canned amount of fuel and payload. I can then just go and fly. If I want to do a complete cold start I use this default CS aircraft with engines running and stock payload. Then I shut down the engines and turn off all the various systems including the battery. Then I save this plane and can load it any time and any place and use it to do my cold and dark start. That's just the way I do it, and it works for me.

When I wrote that old description of the F/E electrical panel I may have confused Mark by using different names for the various switches.

FIELD - GFR or generator field relay or generator relay - turns the generator on and off
MAIN - MGR or main generator relay - connects the generator to its load bus
Bus Tie - BTR or bus tie relay - allows one generator to power all load buses or more than one generator to connect together and share loads.

Hope you can keep the radios running.

Lou

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