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DeaneG
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Delivery Date: 01 Apr 2011
Leaf Number: 594
Location: Cupertino, CA

Re: Safety HV Disconnect?

Tue Jun 15, 2010 9:34 am

adric22 wrote:So Nissan needs to be sure to provide us with the means, and the education to be able to stop the Leaf in the event of a stuck throttle or motor controller.


How about the brakes? We are only trying to tame 107hp.
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AndyH
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Location: San Antonio

Re: Safety HV Disconnect?

Thu Jul 01, 2010 8:21 pm

LEAFer wrote:Shouldn't it be accessible to emergency personnel located closer to the "exterior" of a (smashed) car ? (Notice how in some accidents the occupants need to be "cut out" ... how do you get in there and pull the switch ?) Wouldn't a better location be under the hood or trunk -- which, if heavily damaged, is often "popped up" ?
Is this "disconnect" the same as or related to the SRS disable that emergency personnel needs to get to ?


There's also an inertia 'crash switch' inside the battery box that disconnects the pack in the event of a crash.

If the car rolls or otherwise exposes it's underside, it appears that first responders can cut the high voltage cables that exit the front of the battery box.

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EVDRIVER
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Re: Safety HV Disconnect?

Thu Jul 01, 2010 9:52 pm

DeaneG wrote:
adric22 wrote:So Nissan needs to be sure to provide us with the means, and the education to be able to stop the Leaf in the event of a stuck throttle or motor controller.


How about the brakes? We are only trying to tame 107hp.



No, 3400 lbs and 200 ft lbs of torque.

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garygid
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Re: Safety HV Disconnect?

Fri Jul 02, 2010 7:30 am

Perhaps around 4000 lbs (including contents) and 10 to 30 miles of downhill (with no effectie Regen) is the greater challenge for the brakes.
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EVDRIVER
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Re: Safety HV Disconnect?

Fri Jul 02, 2010 7:44 am

DeaneG wrote:
adric22 wrote:So Nissan needs to be sure to provide us with the means, and the education to be able to stop the Leaf in the event of a stuck throttle or motor controller.


How about the brakes? We are only trying to tame 107hp.



AC inverters do not get "stuck" unlike DC, when they fail it is "open" not closed. I would not worry about that. Since the car is electric I would guess hitting the brake stops the inverter if under acceleration. I really would not be concerned about this issue unless you had a DC conversion, then you really need to take safety steps.

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