On Fri, 2006-03-17 at 20:33 +0200, Peter wrote:
> What's the inrush current for that pack ? 250A draw working may mean 
> 1500A inrush. And when you release it, it will load dump into the 
> switch.

I'm not sure what the inrush current is, and the specs don't mention it.
They just have a graph showing current and flow rate against pressure.
>From the nature of the system though, surely the inrush current wouldn't
be as high as the peak current as the motor has to build up to it's
higher pressure first? Don't know for sure on that one though...


> Is this the first time you deal with a 250A switch ?

Yes ... Can you tell? :-)

I've decided to go with the built-on solenoid control instead of trying
to interrupt the main motor's power. The solenoid needs only a few amps,
so it's quite a nice job for a relay. This hydraulic unit can be mounted
right next to it's battery, so any 'problems' will be localised.
Besides, I can always fit a smoke alarm in the same enclosure.....

The discussions on heatsinking on this thread are most interesting too.

Cheers,

Tim

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