How do you read airbus cockpit preperation procedure correctly? A330
 

Hey guys, I am new on the widebody airbus..

Just wondering how do you read the cockpit preperation procedure on this specific battery part?

BAT 1, 2, and APU BAT…….OFF THEN AUTO


Do you turn OFF all at once using 3 fingers or 1 by 1?

Recently, I flew with a captain before and he said that I am doing wrong by switching it off one by one then turn it all one by one then check the amps..

He said to turn it OFF all at once then turn it ON all at once.

So I ask him what’s the logic behind it, he said its just how the airbus procedure works.

So, which one is correct? Or it doesn’t matter?

Do whatever Airbus or your company SOPs tell you to do in the cockpit preparation documents. You should have copies of both documents available from your type rating and line training. (I no longer have access myself). If a Captain says to do otherwise, you can point out the SOPs to them. (Captains are allowed to vary SOPs in an emergency).

Generally though, only switch one thing at a time - especially in flight, (but I assume this was on the ground). Switching each battery off then on forces each battery controller to measure its own battery and initiate a charge sequence if required.

If you switch all three batteries off and on simultaneously and there is a bang, or smoke, or everything goes dark; which battery or switch caused the problem ?

If pilots do not have time to switch things individually, they need to make more time. There should be plenty of time available to prepare an A330, because there are many more passengers to board, which takes longer to do than on an A320.

Yes its on ground for this one.

It’s just a simple OFF then ON button but it makes me think about it not knowing what’s happening if i do the other way around.

I’m really new to this aircraft, and I didn’t have time to study electrics yet. Anyway thanks for the insight, need to brush up my knowledge more on the electrics part!


Cheers

It doesn’t really matter on the A330, it is not specified, for the A350 its on left to right, off right to left. Different battery technology.

Forgive me, but are we talking about flying the real aircraft ? If so; then you must have passed a type rating for the Airbus A330 - including handling system failures in the Sim - and a line check.

How did you do all that if you "....didn't have time to study electrics yet"?

Electrics is a large part of any aircraft type rating, and you should have been taught about the electrical system in detail in the classroom, and passed an exam about it. (Also Hydraulics, Air-conditioning and pressurisation, Fire and smoke, Power plant, Instrumentation etc. etc.) You should know how ALL the systems in the aircraft work.

Or are you a home Sim flyer ?
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Absolutely nothing wrong with soliciting opinions no matter how qualified you are and even if the real aircraft is not being discussed

Your response added nothing of value

You might be right - perhaps we are each thinking of different definitions of 'study' ?

A pilot who appears to be flying the real aircraft on the line but who "....didn't have time to study electrics yet...", worries me, because they should have studied electrics as part of their type rating, and passed an exam on it.

I might have taken the wrong inference, but the OP came across as not having studied, which confused me, because you do study every aircraft system for a type rating.
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Switches are always one a time time because it's easier to undo or mitigate the damage if you press the wrong thing. Going as fast as possible doesn't look good.